98 Blazer Rough Idle

The part helps your truck maintain a consistent idle even as the engine takes on extra work. Having a a major dilema with a rough idle / Multiple Cylinder Misfire on my 2001 Chevy S10. (did the MFI c. Prevent rough idle, hesitation and stalling Prevent premature spark plug fouling Reduce deposit-related engine knocking and pinging Royal Purple Max-Clean also stabilizes fuel during low-use and storage periods, preventing varnishing of fuel. Are you an expert in this area? Share your knowledge and earn expert points by giving answers or rating people's questions and answers! This section of FAQS. 4l) seems to be having, and I couldn't really find any definitive answers. 3 i recently picked up on a trade. It has 64,000 miles on it. If I remove the vacuum line from the charcoal canister to the sensor the idle smooths out and the truck runs fine. 98 Chevy K1500, 5. The cause is often a problem in the idle air control system. Whether it's for scheduled maintenance or a repair job, we have what you need. The motor had failed because of carbon buildup and was replaced, and the idle went back to normal. Would have been around $3000. What's Your Idle Speed? This is a discussion on What's Your Idle Speed? within the General Help forums, part of the LSx Technical Help Section category; When I last had my car serviced, the shop owner took it for a drive and noted that my car. When you stop at a redlight it will idle high around2. Description: How does a P0171 code trigger the check engine light? This code will trigger the check engine light as follows:. Manufactures have removed these. This is a good example of how basic engine diagnostic tests can work to pinpoint the root cause of the cars problem. I have a 1994 Chevy S10 Blazer with 4. Advance Auto carries over 2,691 aftermarket parts for your 1992 Chevrolet Blazer, along with original equipment manufacturer (OEM) parts. I have changed the spark plugs, wires,pcv valve, air filter, fuel filter, battery, distributor cap and rotor. In many instances, stalling ends up being an idle control motor at its limit or a failed motor. It is noticeable to passengers, and you can see a vibration of the engine when the hood is popped. '98 chevy blazer 4. sensor, tried new computer, at a loss starts right up and idles great, take in down the road and starts surging. After about 45 seconds, idle smooths out and runs great. Also service engine soon light comes on when below 1/4 full but goes away after fill up. My garage told me I needed a new Throttle Body fuel injector dealy (Chevy 350 in a 94 Blazer), way too expensive OMG, I talked to an Auto Zone man and he suggested I try changing the coolant temperature sensor which cost about $17. Engine Size : 4. 98 Blazer - Toy 04 Colorado ZQ8 - Sold is this rough idle a steady issue or does your motor almost "jump" every so often like an unsteady misfire? Bookmark. A high idle on any vehicle less than 30 years old is probably due to an incorrect sensor reading (like throttle position sensor). If I remove the vacuum line from the charcoal canister to the sensor the idle smooths out and the truck runs fine. now it runs good as new. Now it runs very rough at idle and a pending code for the evap system showed on the reader. I have a 1994 Chevy S10 Blazer and after a trip i arrived back home and casually turned it off. Even before that the A/C had a system (analog) to idle the car up when the compressor went on. It may well be that these events are the hesitation & stumble problems described in this article. Occasional white or very light blue smoke only on start up. Got a 98 blazer, idles rough, but runs fine while driving. had rough idle and missing bad. If this is your first visit, be sure to check out the FAQ by clicking the link above. Unhook and plug the vacuum hose to the distributor, hook the timing light to the battery, hook the inductive lead to #1 cylinder plug wire, start the engine and point the light at the timing marks on the crankshaft pulley (or hub), loosen the distributor slightly and turn the distributor until the timing marks are at specification. April Tech Archived Files - Do not respond. Re: 98 S 10 Blazer starts but wont run! August 20th, 2012, 04:23 AM I would say low fuel pressure, you need to get to a mechanic and have them hook up the pressure gauge and that will tell the story. When it shakes the check engine light will flash rapidly then stop. Q: I have a 2000 Blazer and it has a rough idling, shaking problems when it idles. Im going to change the starter, oil/filter, transmition fluid/filter, and hoses to try to get it gone totally. Shortly after that, flashing CEL. We have a blazer with a very high idle When it was first fixed by a mechanic, he told me that there is a small electric motor to open and close a valve that regulates the vaccuum in a fuel injected engine (the vaccuum controls the idle). In my neighbor's Blazer, the PCM wasn't even registering a P0300, but it was obviously running very rough (at idle that is). Advance Auto carries over 2,733 aftermarket parts for your 1993 Chevrolet Blazer, along with original equipment manufacturer (OEM) parts. If there's a rough idle, that can be the cause. 98 Blazer - Toy 04 Colorado ZQ8 - Sold is this rough idle a steady issue or does your motor almost "jump" every so often like an unsteady misfire? Bookmark. I see it leaking from under the upper rightside ac pump or under the air filter housing. Probably my fault 'cause I was just bragging how I loved that car before I left work. Here we will look at how to clean the idle air. Service engine light flashing. If the 'Check Engine' indicator on your vehicle glows continuously, a possible cause may be a malfunction in the idle air control valve. The engine’s idle speed also changes, based on outside conditions. Im going to change the starter, oil/filter, transmition fluid/filter, and hoses to try to get it gone totally. We noticed it more often as the nights have been getting cooler and the summer has come to a close. Still has a rough idle. Sputter, rough idle, and fuel odor Since then, it has become worse, and now there is the additional symptom of a STRONG fuel odor. It runs like it's misfiring and occassionally "backfires". Are you an expert in this area? Share your knowledge and earn expert points by giving answers or rating people's questions and answers! This section of FAQS. Although a rebuilt engine had been installed a year before, and all of the wiring and vacuum hoses looked as if they were in factory condition, I took nothing for granted. Happens more when it is cold/wet and when tank is below 1/4 full. The intake manifold cools the exhaust, preventing the engine from overheating. In this topic, Solving Idle Problems, is a recap of the entire series of topics for What to Do When you have engine idle issues. i have a 1995 chevy s10 blazer when i start it idles rough and sometime wont even idle. We offer high quality new, OEM, aftermarket and remanufactured Chevrolet S10 Blazer Idle Control Valve parts. A computer is adjusting the idle speed, based on complex calculations. (did the MFI c. Usually a bad or failing idle control valve will produce a few symptoms that can alert the driver of a potential issue. New fuel filter didn't help. The truck runs fine when it is warm, but when it is cold it runs rough, rich and stalls. The stepper motor drives a valve pintle which protrudes into a passage that bypasses the throttle plates. 98 blazer 4. 140000 miles. If it matters it's a 2002 Chevrolet Blazer 2wd 4dr. Categories: American Classic Cars | Muscle & Pony Cars. " If turning the ignition on causes IAC to engage plunger fully forward, then there is no purpose in doing what he is suggesting. Im going to change the starter, oil/filter, transmition fluid/filter, and hoses to try to get it gone totally. The blinking would stop after a few minutes and the light would go away. The Sequential Central Port Injectors (SCPI) on these 96-00 vortecs (4. I logged some test data to try and help me figure out why my 98 Mazda 626 GF 2L ATX has a rough idle and is suffering from hesitation. Find your perfect car with Edmunds expert reviews, car comparisons, and pricing tools. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. while exploring trubleshooting avenues what i found led me to the EGR valve. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not what it used to be? Your ignition system may need repair, but before. What complicates a rough idle/misfire condition is having the PCM not register any specific misfire codes. it runs fine when i first start it, but soon idles low/rough, but only in gear. A coating of carbon may accumulate in the idle air control, and cause malfunctioning. no, if you have a haynes or chilton book the call it the oil pressure sensor. My problem is I am getting a very rough idle or stumble. But the values have always been around. If there's a rough idle, that can be the cause. The part helps your truck maintain a consistent idle even as the engine takes on extra work. 00 and the check valve for $64. 98 Chevy K1500, 5. Heat sink paste was like concrete so figured it fried. Novice mechanic needs help. Have noticed that it goes into a rough idle with. I have replaced the following with AC/Delco parts: Cap, Rotor, Plugs & Wires Fuel Pump & Fuel Filter Fuel Injector Assy. USUAL CAUSE The usual cause of abnormally high idle speeds are vacuum leaks or an inoperative idle speed control motor. 3 l low idle engine is idling down about 500 rpm. Its a V6 4. 2000 Chevy blazer (s-10) 4 by 4. '98 chevy blazer 4. Hi i am pretty new here and i am just trying to diagnose problems with a 2000 chevy blazer 4. A computer is adjusting the idle speed, based on complex calculations. driving down the road it does fine, never sputters or struggles, but once i stop at a light it starts the rough idle. 1998 blazer 4x4, 4. Pickup Blazer Jimmy 2" ROUGH. It has 64,000 miles on it. 7L) -- and some 01-03's ---- have a chronic malfunction due to deposit buildup on the poppet valve nozzles located at the tip of each injector. In many instances, stalling ends up being an idle control motor at its limit or a failed motor. the are normally a order item from advanced or auto zone and only about 25 bucks. Find your perfect car with Edmunds expert reviews, car comparisons, and pricing tools. 91 s10 blazer runs rough after idling in the a. 3 Vortec V6 (Throttle Body). its in front of the coil packs, its about the size of your finger. ATTN: All with GM 3800 Series II (including Supercharged) Engines! If you're having issues with it starting or idling, and it keeps getting worse, i can almost GUARANTEE that the problem is your FUEL PRESSURE REGULATOR !. i removed it cleaned it and reinstalled it with a screened gasket, the accel miss is gone and the idle is smoother and. 98 chevrolet blazer V6 please help. It has 64,000 miles on it. I logged some test data to try and help me figure out why my 98 Mazda 626 GF 2L ATX has a rough idle and is suffering from hesitation. could this be a throttle position sensor problem. 4 3l vortec hidden idle screw bam6972. 98 blazer runs then quits. I just took my 2006 Colorado into the dealer due to rough idle also. Average repair cost is $150 at 133,350 miles. I've only ever owned Chevy trucks (2005 silverado Z71, 2001 2500hd 8. Back in the days of carburetors, idle speed was adjusted by way of an idle speed screw. Easy to use parts catalog. 3L Vortech 4X4 automatic. It is intended to help you map out a troubleshooting plan. Won't start unless you hold er to the floor and when it hits keep pumping the crap out of her to keep it running Then it smooths out and when driving it will stall and hesatate from time to time. This can cause any of, or combination of, misfires, rough idle, engine light to come on, and/or difficult starting. Now it runs very rough at idle and a pending code for the evap system showed on the reader. There's something about the longer days and the warmer climate that takes out of our winter ruts as well as gets us really feeling encouraged to take command of points and tremble up their lives right. Several years ago, a retired school teacher brought in a 1994 Chevrolet S-10 Blazer that had developed an intermittent rough idle condition. tighten the distributor and reconnect the vacuum hose. Hard starting, Rough Idle, Misses. It is also a great time to clean the throttle body since we will have it off. " If turning the ignition on causes IAC to engage plunger fully forward, then there is no purpose in doing what he is suggesting. It has just recently strated to idle rough and has died on me twice now. We've got a wide rang of top-quality Chevy K5 Blazer Idle Control Valve of all the best brands in the industry at an affordable rate. Manufactures have removed these. It runs great at startup, cold, but after about 30 minutes, idles rough. 98 Mazda 626 Rough Idle Only Under Load was created by SailorBob I'm going to describe the symptoms with a very short history, some preliminary theories ( based on past work I've done on this car ), the data I've gathered and what, if any, conclusions I might draw from that data. Are you an expert in this area? Share your knowledge and earn expert points by giving answers or rating people's questions and answers! This section of FAQS. If you have problems with your 5-cyl. changed, plugs, wires, coils. I logged some test data to try and help me figure out why my 98 Mazda 626 GF 2L ATX has a rough idle and is suffering from hesitation. I just took my 2006 Colorado into the dealer due to rough idle also. It runs fine at idle cold, but when you begin to drive it feels like it's misfiring or starved or flooded for fuel. Now, when engine starts cold, it idles very rough up and down between 600 and 1200 RPM and almost dies. Engine Stalls (Check Engine Light May or May Not Be On). Cleaning the throttle body can remarkably improve the way the car idles and will often solve the idle drop problem that many M2 owners have experienced. In this topic, Solving Idle Problems, is a recap of the entire series of topics for What to Do When you have engine idle issues. How do you adjust the idle on a 95 Chevy Blazer 43 liter V6? it is not adjustable, it is controlled by the computer. Started low idle, runs rough. Made one stop on the way home, and sure enough, when I restarted the engine, P0305 again. Happens more when it is cold/wet and when tank is below 1/4 full. A rough idle can also be caused by a problem with the air flow box. I replaced plugs and wires and the problem still exist. I have a 1998 Chevrolet Blazer 4. The idle of a car engine is kind of like a human heartbeat: You can tell what shape it's in just by listening. putting it in gear almost stalls it, but when i hit the throttle and get under way, it clears up about 90%. April Tech Archived Files - Do not respond. The computer has gone into a "limp home mode" where it idles the engine up super high. Any assistance greatly appreciated. Got 5 blocks, was sitting at a light and suddenly the idle goes from smooth as silk to decidedly rough. m? S10 blazer rough idle? 98 S10 4 cyl. It has 64,000 miles on it. Chevy Blazer 1992, Tru-Tech™ Ignition Distributor Pickup by Standard®. My 2003 chevy blazer stalls when i come to a stop light or is idle for a while. I was trying to do a test to see why my brake pedal was so stiff and I couldn't complete the test because when I pressed the brake pedal the car would sputter and die. Chevy Blazer 1992, Tru-Tech™ Ignition Distributor Pickup by Standard®. New BOSCH fuel pump for $98 and strainer for $18. Then repeat the test. This can cause any of, or combination of, misfires, rough idle, engine light to come on, and/or difficult starting. 3L vortec V-6. Chevy Blazer and GMC Jimmy Questions. My dad's S-10 seems to run with lower oil pressure readings than the blazer, but I don't have much experience as to knowing what may be typical or abnormal. Still has a rough idle. The Apollo Blazer 9 ATV is sized just right for young riders and features electric start and an automatic transmission! The Blazer quad hosues a tough 125cc 4-stroke engine with overhead cam with a broad powerband for smooth, easy acceleration on any terrain. The scan values are slightly lower at idle than before and don't correlate to the truck manual. One of the most common symptoms commonly associated with a problematic idle air control valve is irregular idle speed. ? I removed the gas cap and put back on. This case study is on a 1996 Chevrolet Blazer with a 4. In this topic, Solving Idle Problems, is a recap of the entire series of topics for What to Do When you have engine idle issues. you can check the resistance of the sensor with a multi-meter, i just dont know the. Rough idle on 1999 chevy blazer 4. We are at a lose here and have no idea why it idles rough. When the engine is started cold, regardless of the outside temperature, the idle is rough and there is a noticable power loss. Browse your favorite brands affordable prices free shipping on many items. rough idle on 95 s10 blazer 4. Back in the days of carburetors, idle speed was adjusted by way of an idle speed screw. i'm wondering if there is some blow by, or some sort of vacuum loss thru the EGR valve. How do we adjust an engine's idle speed? In the past, adjusting an engine's idle speed was easy. Q: I have a 2000 Blazer and it has a rough idling, shaking problems when it idles. I have been humbled into a parts changer. I have changed the spark plugs, wires,pcv valve, air filter, fuel filter, battery, distributor cap and rotor. its in front of the coil packs, its about the size of your finger. Its a V6 4. It has 175,000 miles on it,1000 miles on intake gasket job, hoped that would the fix rough idle. I have a 94' Chevy S10 with the 4. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. I changed the plugs and wires and then used multiple rounds of injector cleaner on it and the rough idle got better. Service engine light is on steady. P0171 is a very common code for any ODB2 vehicle. 3L Poor Idle Quality, Hesitation, Surge, Stall, Misfire, MIL Lamp on Posted to GM Driveability on 12/10/2008 14 Replies i have a 98 blazer with cel light on custemr complant was it runs ruff i tested for the injectors and found that # 2 and 5 did not afect the way it ran so i replaced the injector sistem with the new and. The truck runs fine when it is warm, but when it is cold it runs rough, rich and stalls. 1998 Chevrolet Blazer 4. I have a 90 tsi awd, when my car idles it idles fine at about 700 rpm. 1995 buick century with obd 1. CK5 has since expanded to include the C/K series GM Truck and Suburban as well as past and present GM models. it runs fine when i first start it, but soon idles low/rough, but only in gear. Find your perfect car with Edmunds expert reviews, car comparisons, and pricing tools. Fuel trims at idle and at cruise were in a fairly normal operating range of -5 to +9. no, if you have a haynes or chilton book the call it the oil pressure sensor. I replaced plugs, wires, rotor, and cap This cleared up the miss on acceleration, but didn't do anything for the rough idle. New fuel filter didn't help. The computer has gone into a "limp home mode" where it idles the engine up super high. PATH: Diagnostics > Diagnostic Routines > Powertrain > Engine Controls - 4. It is/was a well known problem that the EGR ports from the exhaust ports up the the EGR passage in the intake would get carbon buildup in them and periodically small bits of carbon would break loose and get caught in the EGR valve, thus it can't fully close when commanded (at idle) and thus the open valve causes a rough idle. You guessed it the head was bad. It runs like it's misfiring and occassionally "backfires". :confused: I have a 1998 Chevy Blazer with a 4. Then repeat the test. 98 Energy. I have a 2001 chevy S10 that on initial startup after sitting overnight it runs rough and the engine vibrates! after driving a few miles the symptoms disappear and it runs fine. My blazer was doing the same. My 2003 chevy blazer stalls when i come to a stop light or is idle for a while. 3 Vortec motor in it. Hi, I searched all around but I cannot find a reason for this. My 98 blazer is going through about a quart or so of coolant every other day. Very rich fuel smell with lots of smoke. Find your perfect car with Edmunds expert reviews, car comparisons, and pricing tools. Why does Chevy blazer have rough idle and engine shake at idle? Answer. been told to clean out screen on cam sensor, part has no screen. Wiki User 01/05/2010. In many instances, stalling ends up being an idle control motor at its limit or a failed motor. My '98 with 95k miles has developed a real annoying habit. sensor, tried new computer, at a loss starts right up and idles great, take in down the road and starts surging. codes are p0172. Now, when engine starts cold, it idles very rough up and down between 600 and 1200 RPM and almost dies. Hello, I have a 1988 Chevy S10 Blazer with the VIN Z 4. Learn more about the 1998 Chevrolet Blazer. Made one stop on the way home, and sure enough, when I restarted the engine, P0305 again. 3L Poor Idle Quality, Hesitation, Surge, Stall, Misfire, MIL Lamp on Posted to GM Driveability on 12/10/2008 14 Replies i have a 98 blazer with cel light on custemr complant was it runs ruff i tested for the injectors and found that # 2 and 5 did not afect the way it ran so i replaced the injector sistem with the new and. not the problem it has to codes p0171 and a pending p1133 with are bank one codes for 02 sensors ive never seen a 02 sensor cause a ruff ide could this be?? my secound thought was low fuel presure at idle it is a 53 witch should be great and 60 with engine off so. All of our Idle Control Valves are guaranteed to fit if you use enter your Chevy K5 Blazer into your Year Make Model selector. It has a rough idle, hesitates at takeoff, the muffler is putting, and the brakes are stiff. 3 i recently picked up on a trade. The best prices on blazer suburban! Featuring our big assortment of Blazer Suburban for sale here. :confused: I have a 1998 Chevy Blazer with a 4. We sell wholesale to the public. Even when hot, sitting in drive, it runs rough, although not bad enough to effect acceleration. Signs and Symptoms of a Bad Idle Air Control Sensor by Richard Rowe Connected to the engine's primary air intake valve (the Throttle Body, or TB), the Idle Air Control (IAC) valve is responsible for making minor adjustments to engine airflow. s' '98 Jeep Wrangler with 4 cyl. When I first start the car, the idle only goes to 800 rpm. 98 eBay determines this price through a Thumpr Cam Kit Very Rough Idle (Fits: Chevrolet K5 Blazer) Thumpr Cam Kit Very Rough Idle. codes are p0172. Auto, Car, Truck Parts Online. As soon as it warms up, it starts to idle rough, between 500 and 750 RPM. What are the common causes of code P0507 ? Depending on year, make, and model, DTC P0507 may have number of causes. Order Idle Air Control Valve/Motor for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. changed, plugs, wires, coils. What would cause my truck to have a long turnover start, a really rough idle, and a loss of power after. Are you an expert in this area? Share your knowledge and earn expert points by giving answers or rating people's questions and answers! This section of FAQS. Feels like driving over reflector bumps in middle of the road. Hello all! Last weekend I got a 98 Z3 Roadster I absolutely love the car! However, it has developed a small problem The engine idles rough. The damper for the air flow box can fail mechanically or the contacts inside the box can get dirty and send a errant signal to the DME control unit. Im sitting there and all of a sudden the car starts to kind of shake, so I look down at the tach thinking its stalling, however it wasnt. 89 s10 blazer stalls at stop sign after warm. 4l) seems to be having, and I couldn't really find any definitive answers. It is/was a well known problem that the EGR ports from the exhaust ports up the the EGR passage in the intake would get carbon buildup in them and periodically small bits of carbon would break loose and get caught in the EGR valve, thus it can't fully close when commanded (at idle) and thus the open valve causes a rough idle. Auto, Car, Truck Parts Online. the are normally a order item from advanced or auto zone and only about 25 bucks. Get Your Chevy Blazer Idle Air Control Valve from AutoZone. If engine rpm is higher than expected, by 200 rpm or more, the ECU will set DTC P0507 - Idle Control System RPM Higher than Expected in memory. Service engine light flashing. Just this morning started to shake real bad off and on while driving. 1995 buick century with obd 1. We noticed it more often as the nights have been getting cooler and the summer has come to a close. not the problem it has to codes p0171 and a pending p1133 with are bank one codes for 02 sensors ive never seen a 02 sensor cause a ruff ide could this be?? my secound thought was low fuel presure at idle it is a 53 witch should be great and 60 with engine off so. how is - Chevrolet 1998 Blazer question. It runs fine at idle cold, but when you begin to drive it feels like it's misfiring or starved or flooded for fuel. See the 1998 Chevrolet Blazer price range, expert review, consumer reviews, safety ratings, and listings near you. No dash lights. I replaced plugs and wires and the problem still exist. The engine's idle speed also changes, based on outside conditions. Compare prices of 03 S10 Pickup 6 and other comparable products. My 2003 chevy blazer stalls when i come to a stop light or is idle for a while. Save up to $5,783 on one of 260 used 1995 Chevrolet Blazers near you. P0507 Chevrolet Description The Idle Air Control (IAC) valve is a Powertrain Control Module controlled stepper motor located on the throttle body. i have checked the mass air flow for fuzz build up on it. Could the tune have caused my truck to start idleing rough? It only does it if the the blower is on and it only seems to do it every 6 sec or so like whe. iATN is the world's first and largest online community of automotive professionals, where automotive technicians and other auto industry pros perform real-world vehicle diagnosis, and discuss theory, shop management, and other industry issues among their peers. Subject: Posted By: Time & Date: Replies: Mysterious Noises: Jason: 07:29:44 5/01/98 (5) Factory Carb: Brian: 19:38:13 4/30/98 (1) air. I recently rebuilt my blazer. Its a V6 4. Repair Information for P0300 Chevrolet code. The J-Body Organization, j-body. It runs great at startup, cold, but after about 30 minutes, idles rough. Cleaning the throttle body can remarkably improve the way the car idles and will often solve the idle drop problem that many M2 owners have experienced. I replaced the sensor in front of the charcoal box but it still ran rough. Browse your favorite brands affordable prices free shipping on many items. 98 Mazda 626 Rough Idle Only Under Load was created by SailorBob I'm going to describe the symptoms with a very short history, some preliminary theories ( based on past work I've done on this car ), the data I've gathered and what, if any, conclusions I might draw from that data. Disconnect power from the ECM for at least 10 seconds to clear codes (in case any are present) and reconnect the IAC electrical connector. codes are p0172. After the first few seconds, its idles rough. This is a good example of how basic engine diagnostic tests can work to pinpoint the root cause of the cars problem. The part helps your truck maintain a consistent idle even as the engine takes on extra work. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. 3 idles great but upon acceleration it starts to surge, changed just about everything, fuel pump,cap rotor, wires, plugs distributor injectors, crankshaft, cam, throttle pos. My 2002 Chevrolet Trailblazer stalls when sitting at a red light but not all the time,rpms go up then drop to 200 and car cuts off,already cleaned throttle body,changed fuel filter,changed map sensor,changed exhaust cam actuator solenoid and still stalls,any ideas would be greatly appreciated!. This hesitation has constantly gotten worse. '98 chevy blazer 4. The complaint on this Blazer was that it had a misfire that was bad enough to make the tach jerk. I have a 95 blazer vortec "W" engine. Exhaust has a very strong smell to it. It is also a great time to clean the throttle body since we will have it off. 1989 S10 Blazer 145,xxx miles It will start and idle rough. Engine Stalls, Misfire Code, & Cylinder Misfire The engine may be stalling because it isn’t getting enough throttle opening. After it warms up, as I am driving and approaching a stop, the car idles at 1100rpm. 98 Blazer starting problems >rough idle hesitation/surge on acceleration. When the A/C is turned on, the idle becomes very rough and sometimes stalls at stop lights, stop signs. 140000 miles. Its a V6 4. no, if you have a haynes or chilton book the call it the oil pressure sensor. Service engine light flashing. PATH: Diagnostics > Diagnostic Routines > Powertrain > Engine Controls - 4. If there's a rough idle, that can be the cause. doesn't shift from 3rd gear to overdrive sometimes when hard accelerating, until I release the accelerator. We provide the right products at the right prices. Top 10 Causes of a Rough Idle | JL Motorworks. s' '98 Jeep Wrangler with 4 cyl. Okay, folks. The nawwws Civic wanted to race, but his body kit had gotten caught on the curb, and he didn't have the torque to pull it back off. 3 idles great but upon acceleration it starts to surge, changed just about everything, fuel pump,cap rotor, wires, plugs distributor injectors, crankshaft, cam, throttle pos. All of our Idle Control Valves are guaranteed to fit if you use enter your Chevy K5 Blazer into your Year Make Model selector. Chevy Blazer 1992, Tru-Tech™ Ignition Distributor Pickup by Standard®. The only things I have tried so far to fix the problem is change air filter, spark plugs and clean throttle body but none of these things have solved problem. not the problem it has to codes p0171 and a pending p1133 with are bank one codes for 02 sensors ive never seen a 02 sensor cause a ruff ide could this be?? my secound thought was low fuel presure at idle it is a 53 witch should be great and 60 with engine off so. ? I removed the gas cap and put back on.