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Ron, ASE Certified Technician
Category: Mercury
Satisfied Customers: 36044
Experience:  ASE Certs and Ford Certs
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97 grand marquis: what could the problem be

Resolved Question:

97 grand marquis speedometer works sometimes what could the problem be?
Submitted: 7 years ago.
Category: Mercury
Expert:  Ron replied 7 years ago.



Is the check engine light coming on when the speedometer stops working?

Customer: replied 7 years ago.
yes it came on a few months after this problem started
Expert:  Ron replied 7 years ago.

If the check engine light comes on when the speedometer stops working the problem could be a bad speed sensor but to be sure you should have the system scanned when the light is on as it will have a stored code. Most auto parts stores will do the scan at no cost to you, once you have the code we can direct you in the needed repair.

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