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1998 Chevrolet Metro Repair Question


Topics covered: Engine, Check engine light, Emissions.
Mileage: 140,000 miles.

Asked on May 18, 2011

1998 Chevy Metro having issues

My 1998 chevy metro just started having some issues:
1. check engine light came on
2. vehicle seemed more sluggish
3. when idling it doesn't seem to stay at a steady rpm. never dies but chugs a little bit.
4. engine shakes when idling
5. slight rattling when accelerating

i dont know what to do and i dont want to have to put a fortune in this car. i just need it to make a 20 mile round trip and errands 5 days out of the week.
Avatar Asked by whiskers214

Answer

Replied on May 18, 2011

The "check engine" light is an indicator for a system that monitors many electronic functions in the system, also called the "malfunction indicator lamp" (MIL). It can come on for any of hundreds of different causes from any of the systems that the computer monitors. Some are very important and can lead to further component or engine damage and some are emissions related not as serious but still a problem and need to be repaired.

Your first step is to have the computer scanned to retrieve the trouble codes that were set when the check engine light came on. Those codes will give you specific information about what the computer saw and will get you pointed in the right direction to find your problem. With a 1996 or newer and some 95 cars and you have an AutoZone or Advanced auto parts in your area, they will read them for free. Once you have these code numbers, we can be a lot more specific about what your problem may be.

Tiny Answered by Wrenchtech (expert)
14,757 answers provided
Replied on May 18, 2011

i took it to auto zone and they said
1. bad o2 sensor
2. bad caytalytic converter
3. engine misfiring
4. vacuum issue
this is all i know

Tiny Response from whiskers214
1 question asked
Replied on May 18, 2011

I need the exact code numbers, not their interpretation of them.

Tiny Answered by Wrenchtech (expert)
14,757 answers provided

Replied on May 18, 2011

P0420

Tiny Response from whiskers214
1 question asked
Replied on May 18, 2011

That is an emissions code for catalyst efficiency. It rarely has any effect on engine performance and likely has nothing to do with any of your dirveability issues.

Tiny Answered by Wrenchtech (expert)
14,757 answers provided
Replied on May 18, 2011

well how do i fix that then?

Tiny Response from whiskers214
1 question asked

Replied on May 18, 2011

90% of the time it's replace the catalytic converter but you have other problems.

Tiny Answered by Wrenchtech (expert)
14,757 answers provided