0
I assume you are speaking of your CHECK ENGINE Light. Since you are driving a 1989 GM - it could be a bunch of things. Try this. Disconnect BOTH battery Cables. Touch them together for 10 seconds. Reconnent the cables to the battery. This can sometimes reset the computer. But, you'll have to reprogram the time and favorites on your Radio, etc... If, after doing this, the light comes back on. You'll need to take it to a servicer who can determine which code is causing the light to come on. Then you can get it fixed. Hope this helps. I don't know if this applies to your problem as my year of make is newer (2004) but, IF your Gas cap is NOT 'Clicked' tightly, it CAN cause the "Check Engine" red light to come on...and it will stay on until the cap is properly setin place. I hope it is this easy. Good Luck. LOL on your first answer.....first off, a grand marquis is not a gm. and on this model of vehicle there are 2 engine lights. one says "engine" the other says "check engine".......in your manual for the ccar, it tells you that this light will come in if the oil pressure is too low, or coolant is low and engine is getting too hot. this is a factual answer lol. this guy above cracks me up saying a Mercury is a gm product...its a Ford dude. haha
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
2002 Mercury Grand Marquis engine light stays on?
Have the codes read.
What does the wrench light mean on 2005 grand marquis?
It means your engine needs attention.
How do you Fix 2001 grand marquis bucking with engine light on?
Have vehicle scanned to determine the problem
WHy is the check engine light on in a Mercury Grand Marquis?
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions. If the check engine light is flashing a misfire has been detected
What to check when check engine light in a 1992 mercury grand marquis?
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions. If the check engine light is flashing a misfire has been detected
What causes cneck engine light to stay on on a 2001 grand marquis check engine light is on?
Thousands of things. Take it to a mechanic who has a scanner and they can tell you what the problem is.
Why wont your 1994 grand marquis check engine light come on?
does the light illuminate during start up? If not the lamp is burned out. If it does, then the engine computer is likely at fault.
How do you turn off check engine light on a 1992 mercury grand marquis?
Have vehicle scanned to determine the problem
What cause the check engine light to come on in a 1987 grand marquis?
The Check Engine Light comes on when an error code is sent to the Car's Central Computer. Take it to a servicer who can download the code and tell you what's wrong. It could be any one of a thousand things wrong.
Mercury Grand Marquis check air suspension light is on?
I have a 1998 ford grand Marquis- and the problem is the air suspension light stays on- how to fix this problem
Why would the engine light stay on on a 1994 grand marquis when nothing seems to be wrong?
The computer has detected a problem and there is a code available for you to read. That is the purpose of the light.
Will the check engine light on a grand marquis 2001 go on if the thermostat?
That is one of hundreds of possibilities. See related questions below.
