What makes your checkengine lite stay on?

Question:
1989 park avenue

Answers:

Mismatched tires - is it ok to change 2 tires or do I have to change all 4 at once?

i own a repair shop,and any sensor on it that goes bad will keep this light triggered until the sensor is replaced or the problem with the system has been repaired,you can have it scanned free at any auto zone store and they can tel you whats making it come on and stay on,and they will have the parts to fix it with also,good luck i hope this help,s.

how do i change/adjust the fan belt on a Renault Clio 1996? Fan belt is screeching.?

an steady faulty code.

Where is the Camshaft Position Sensor located on the 97 Chevy Malibu LS?

It is sometimes caused by the gas cap not screwed in right.

Whats the best way to keep swirl marks from appearing in black paint on a vehicle?

get the code read, get it fix, and they will reset it.

how do i find out what engine i have?

a fuse out, a censor out, any low fluids.
I would take it to a auto shop and let them hook it up to their computer and see what it is.
otherwise they have at home computers you can hook up to your car, at any Auto parts store has them and that would tell you why it is on.

what's wrong with my car....??

what is your car doing is it doing anything funny motor wise? need more info??

where can i find & get blueprints for a chevy 350 small block engine? come on GUYS help me out ;)?

The little chip that monitors basic engine functions knows there's something wrong and you need to take it to a mechanic to find out what's wrong. It'll stay lit until you fix it, or the light burns out, or the car goes up in a puff of smoke because you didn't get it fixed.

after pulling the codes for my check engine light on my 02 mustang i changed the egr valve why didnt it go off

most common is oxygen sensor, check all fluid levels.
Go to auto zone, some stores in the Midwest will check it for free and reset it, Of course they would like to sell you the part, nothing wrong with that.

Painting over small fractures in the clear coat?

Several things can cause this to happen. Go to your nearest AutoZone and they will scan it free and tell you what the problem is. Some things need to be fixed ASAP and some are not crucial.

I have a 1999 C 3500 with a 7.4 Liter and it knocks GM tells me this is normal?

Auto Zone can not scan your vehicle. 1989 was not equipped with OBD II, which is the system Auto Zone can scan. The computer systems were not to advanced in 89' so more then likely you have an emissions code in the system - possible oxygen sensor not reading correctly. You will need to take it to a repair shop that has the computer to scan it to find out for sure.

I broke my passenger window in my Dodge Durango when I slammed it; How much to fix?

a fuse out, a censor out, any low fluids.
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