Question about 1997 Chevrolet Cavalier
I own a 2002 Z-24 with roughly 95k miles
The problem with my car, is that I have a decently rough idle...
At rest my cars rpm needle will bounce roughly +-50, which is enough to rock the car. Also the car seems to engine break very slightly when I take my foot off of the accelerator (This doesnt happen everytime but does happen very often, and is a jerky motion as well, Im not saying that my car IS engine breaking it just creates the sensation that it is) On one rare occasion my car was rocking so bad while driving roughly 40 mph's i nearly pulled over (This was during acceleration too)
Overall the car runs great, It accelerates no problem (Believe me I tested this =P), Only at red lights do I notice the problem. My gas mileage has evaporated too...
I took my car to Autozone and had them run codes on it the only one to appear was I believe P0174-Lean Mixture Code...after some time bsing with the employee who found this, we noticed i had a huge gash in on my air hoses, which we replaced.
I then followed the whole misfiring path as i believe this is the problem
-Replaced my Sparkplugs, which were charcoal black
-Bench tested my coil packs with brand new ones at auto-zone, were reading exactly the same ohms as new ones: Thats not the problem
-Then checked my ICM with Autozones computer both hot and cold, it passed both times
-I put a fuel injector cleaner into my gas tank-Didn't help
-Im getting nervous that this misfire is causing mega-damage to my car, bc I changed my oil last night, to which I found my oil plug covered in metal shavings....
Im really not sure what to do next...Any suggestions???
Have you tried to isolate whitch cylinder is missing? Try pulling your wires off and replacing one at a time and listen to your engine find the cylinder that doesnt make a difference in the way your car is idling when you remove that wire. You may have a bad injector or possible stuck valve or you can have low compression in that cylinder. You can get a cylinder compression tester from Autozone and check the compression of that cylinder against the compression of all the others. They should all be pretty close to the same PSI. If you have a large fluctuation in pressure then you may have some internal problems. Hope that this helped.
Posted on Jul 22, 2009
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Posted on Jan 02, 2017
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