99 chevy tracker is running very rough, hard to accelerate
When I shift gears, it seems to run really rough and not want to accelerate. Sometimes it smooths out a bit, but then I have to change gears again. Anyone have any ideas? Spark plugs? How do we change them.
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Have you checked the fuel pressure under a load, low pressure will cause these symptoms. The test port is on the top of the engine in the fuel supply rail to the fuel injectors, the fuel pressure test port looks like a large tire fill valve. You will need a fuel pressure test gauge to do this test (about $20), the pressure must be watched while you accelerate, it should never go down on hard acceleration just up about 6-8 PSI
u need to have the system tested for trouble codes, but u most likely have a defective trans 1-2 shift solenoid. to replace this u will need to pull the trans pan off the solenoids are attached to the valve body, also check the trans connector for water or corrosion.
The run rough problem is due a cyl.mis firing,it becaused buy a bad plug,plug wire,coil,or even the ing.module. the servive eng.light flashing is warning you that you have a cyl.misfire that can cause damaget to your catltic converter if you continue to drive it.with may lead to why you think you have a exhaust problem,it may be colgged.