Have vehicle scanned to see if any codes present
after driving it for fifteen minutes it turns back on
Check engine lights are designed to give a driver warning of a mechanical issue concerning the car. In a 1991 Chevrolet Corsica, if the light comes on while driving after 10 minutes on the highway, it is best to limit driving to prevent further damage. Check the owner manual for reasons the light may be coming on or let a mechanic evaluate the issue.
If the check engine light is on...might be a dirty EGR valve.
There are dozens of things that turn the light on. TAke it to auto zone and have the codes read.
Remove the battery cables for 5 minutes, should do it. Then the computer will reset and relearn after driving again. If a major fault was present before, it will return via the check engine light. If you need an inspection, then unhooking the battery for 5 minutes and driving maybe 20-40 miles and then going for inspection may do the trick. There is a small window where the check engine light hasn't come on yet and the IM monitors are mostly ready for inspection.....just before the check engine light comes on again. It will pass, in this window. But when the check engine light comes on again, it will not pass.
Look under the hood of car on left side ( driver's side ) and you will see a black box labeled with fuse locations. Look for the fuse for ECU it will be a 10 amp fuse. Remove the fuse for about fifteen minutes. Replace the fuse and start engine. Check engine light will be out.
Disconnect the battery cable for about 10 minutes and the light will be reset. If it comes on again after driving, it's a recurring problem and you can get the codes read and hopefully fix the problem. Disconnect the battery cable for about 10 minutes and the light will be reset. If it comes on again after driving, it's a recurring problem and you can get the codes read and hopefully fix the problem.
because the engine is cold. after it warms up the light goes off. Cute! But what causes the blue light to come back on even after you've been driving for a while?
Have you checked the computer codes? If so, what do they say?
Yes it will reset after a set amount of driving cycles if that repaired the problem. Or you can remove the negative battery cable for 5 minutes to reset the light.
You replaced the cap and it will take quite a few driving cycles for the light to go off if that was the culprit. Try disconnecting the negative battery cable for 5 minutes and that might reset the light.
engine is about to stall