Sierra GMC :: 1998 - Engine Misses At Idle And During Driving Speed Range
Jun 23, 2011
I recently had intake manifold gaskets replaced in my 98 gmc sierra 4x4 pickup 5.7 . The day I drove it home from the shop it ran fine, even day after but the next day I noticed it seem to idle a little rough and even at normal driving, sometimes seems worse than others. No service engine light has yet to come on. Could there be vacuum leak, trash in intake or bad wires and plugs. Plugs, wires, rotor button and distributor cap are only year and half old.
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have a 98 rodeo, with a V6 & Auto trans. have an intermittent problem - as I am driving engine will occasionally drop to idle speed and then pick back up to driving speed. Engine keeps running smoothly, just at idle speed.
CEL does not come on / no codes
Replaced Throttle Position Sensor - and thought I had found the problem, but since it is so random, it just didn't happen again for 1 1/2 weeks.
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My 1998 GMC Sierra K1500 has developed an intermittent high speed miss. I doesn't miss while idling but with no apparent regularity it will jerk as though the engine lost power for just a moment. I just replaced the distributor cap and rotor and the plugs and plug wires appear to be fairly new (I bought the truck last May). The truck has about 213,000 miles on it.
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[URL] .... Mazda 2.3 Liter 4 cyl. accelerates fine in all gears, but once you reach a steady speed in any gear, it jerks and bumps. Does not run smooth unless you are accelerating?
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This truck has 180km on it and runs fine except as of lately i have developed a surge while at constant speed. When i step on the gas it does not seem to happen.....it only happens when I reach a constant speed. The odd time it will surge at idle and the engine will rev up and down on its own also. When at highway speed it seems to not do this. The truck never dies completely....just surges slightly.
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1998 Explorer 4L 6Cyl 4WD 5 Speed Auto
This engine unexpectedly surges from idle up to as much as 3 or 4 thousand RPM. It can be frightening. The IAC valve was buzzing loudly so we changed it out a couple of times with wreckers parts. With the third replacement valve in there, it hasn't surged yet but we are very leery to drive it for fear of uncontrolled acceleration while in heavy traffic. Is this a known problem or recall with these vehicles. I think it is ridiculous that the design would allow such a dangerous condition!
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My Sierra has the 5.7 Vortec engine with 230,000 miles. Ever since I bought the truck at 208k I've been having a random No-Start condition... It can be cold, warm, or not ran for weeks. I've replaced the Fuel pump (just the pump, not the sender too), MAP sensor, ICM, TPS, and Camshaft position sensor. I'm still thinking its a fuel issue. I get 61 PSI at the test port when ignition is on, 55 when cranking, and 54 while running.
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So I got a 98 GMC sierra and the ect sensor that is on it only had one wire running to it. Obviously the previous owner tried to make something work. I bought a new ect sensor and pigtail to rewire it but can't find the ground wire anywhere. Looking for a wiring diagram?
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My truck has been having idle surge, low engine power, says stable tracks is off, computer said TPS pedal sensor. I replaced it. Within 3-4 days my truck does the same thing. I turn it off and eventually my truck runs fine with the exception of my engine light is on truck runs good. I put the computer on it again while the truck running bad and it continues to say it is the TPS sensor.
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1994 Toyota pickup... Engine misses intermittently both at idle and throughout rpm range. Cap and rotor clean,plugs read nice light brown fuel burn color- would injector cleaner in gas work.....
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2003 astro - misses and chugs and clunks until i get up to 40 miles per hr...
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1998 saturn SL2 idle speed changes low, high, back to low. Some times the car dies, can happen any time a few times in traffic. Once the engines dies the idle stays low for 5 minutes, then the problem goes away for a while (a week). You never know when it will happen.
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2000 GMC Sierra 2500 6.0L gas engine 150K miles. After returning home from a 150 mile drive, I notice a very heavy sound of marbles banging around near the front of the engine at idle. The noise is a much like heavy detonation where timing is badly off kilter. Used my stethoscope to determine this is loudest at the water pump housing. The belt runs smoothly with no sign of unusual resistance. The engine does not overheat, and there is no sign of a coolant leak.Can a bad water pump shaft bearing make such a tremendous "cackling" noise? What else could it be?
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A few days ago my 98 C1500 started having what I can only imagine is some type of torque converter issue. While driving at a constant speed the RPM will surge by about 500-600. This surge does not coincide with any type of acceleration, it's more like the converter is letting go and the RPM's just rise and fall back down. The fluctuations also seem to stop after about 15 minutes of normal driving. I have had no real noticeable transmission issues. At first i assumed it was my tranny fluid just breaking down so to get me home I used a bottle of Lucas.
The bottle seemed to do the trick for only a couple of days and now the problem is back...no better, no worse. The only difference I have noticed is that before the addition of the Lucas my fluid looked perfect and now it seems there is a bit of varnish. No smell, nothing seems burnt, just a little dirty. I haven't changed the tranny fluid for about 70k and the truck now has roughly 160K on it. My concern is that if I do change it the transmission will crap completely and I'll be on the hook for a rebuild.
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I have a 1998 blazer 4x4... I had a issues with the car before and I had to turn the idle screw up until I fixed my problem. I now fixed my problem and I need to know what my idle rpm should be at.
After I fixed the original problem after about a day of driving I had a P0507 Idle speed High/Low. I turned the set screw down and lowered my rpm. After about 5min of driving the code went away on its own.
About 1 week later I am now getting the P0507 again and now it has a buddy. P0446 Evap System.
Questions what would my idle rpm be? Can the high rpm cause the EVAP code as well.
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I have a 98 Silverado, 2wd, 5 liter V-8, 180,000 miles. Occasionally, my truck will lose power. Driving down the road I lose speed and cannot accelerate. When I depress the accelerator the motor does nothing. This happens at any speed from take off to highway speeds. When it begins to happen I lose speed slowly for maybe 30 seconds then the service engine light comes on and the problem gets much worse. Sometimes it will sound like it's back firing but the sound is muffled. This seems to happen more often in damp weather but it can happen in dry weather too. And it doesn't always happen in damp weather. It happens in the morning or afternoon. Auto Zone put their tester on it and a code comes back for O2 sensor but the guy didn't think that would cause the trouble I'm having.
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My new-to-me 2001 Ranger 2.3L runs great except for this one problem: At under 2000 rpm, if I give the gas more than the gentlest tickle it misses and bucks until I back off. It also misses at idle. There is no CEL but I did pull a P0442 code which points to the evap purge valve. At above 2K rpm, it runs like a champ and I can floor it, except when under load such as climbing a hill.
Could this be the problem, or should I look elsewhere also? I'm not one to just throw random parts at a problem. The previous owner thought it was old gas or an injector, but I would expect it to run poorly all the time. The service writer at the Ford dealer thought it sounded like an electrical issue, but coil, plug wires and plugs are new.
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My 98 1.8t Passat is throwing a P1565 Idle Speed Control Throttle Position Lower Limit Not Obtained. I have cleaned the throttle body with no improvement and cleared the code many times with no luck. The car only has 114k on it car runs fine although some times will give me problems starting it ill have to sit and crank it for 40 seconds or more and also will idle on rear occasions 1300 vut normally between 850 and 900.
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2004 ford f250 superduty v10, truck has a cold run miss, no matter the temp. (0deg. or 100 deg.) when i start truck it misses for about a mile or so until temp. rises, after that it runs fine all day even if i park it for a few hours,next day same thing. I have changed all 10 plugs, gas filter, air filter, cleaned mpf censer, throttle body. Also it shows no codes, and there are no codes in history.
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I have a 2000 3.0l ranger. I have been battling an ignition problem. every time the engine is cold it runs terrible like only 3 or 4 cylinders running terrible. if u put a timing light on the wires the pulse comes and goes on random wires. and when it quits that it has a random sputter at idle and misses around 4k when u get into the throttle ...
I have replaced plugs twice and the coil with motorcraft parts and the wires are new autolites. I have also replaced the thermostat and fan clutch it was getting hot in the middle of this other issue ...
Every time I replace something it runs great for a few days then back to running terrible again. am I missing something else do I need to look at a computer or map or tps sensors, or something like that ...
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I have a 2007 2.7-liter Santa Fe with 71,000 miles. I experience intermittent rough idle and rough low speed driving. It seems that in town driving will trigger these conditions. And when it's warmer outside that oppose to colder temperatures.
In most cases I can turn the car off, and after 2-5 minutes, start it right back up and the problem with go away.
The OBD codes are P0276 and P0306.
I have replaced the coil and injector on #6 cylinder.
The #6 spark plug is dry when the problem occurs.
I had the dealer update the ECM software
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