1993 Mercury Grand Marquis Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1993 Mercury Grand Marquis
Never overpay. Check prices with our estimator
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Our experts translate recalls into plain English
1993 Mercury Grand Marquis ProblemsEVP Sensor Failure May Cause Drivability/Fuel Economy Issues
The EGR valve position (EVP) sensor can fail on this vehicle. The EVP sensor measures the EGR valve position and transmits the date to the engine control computer. If it fails, drivability and fuel economy can suffer, the Check Engine Light will commonly illuminate.
The throttle position sensor (TPS) may fail. Common symptoms of a defective TPS can be rough idle, hard starting, hesitation on acceleration, poor fuel economy, and stalling.
1993 Mercury Grand Marquis QuestionsIf I put a 1997 Transmission in my 93 what do I connect to the wiring harness or (1 answer)
I used a trans 1997 transmission out of a Mercury GrandMarquis and I put it in my 1993 Grand Marquis but the 1997 transmission has a wired connection and the 93 did not what do I need to do and also I used the 1997 Grand Grand Marquis computer