1991 mercury grand marquis. Consumer writes in regards to defective after market electrical component. *ld the consumer purchased a new starter solenoid relay, bwd select brand by standard motor products inc., after about 10 days, it short-circuited. Due to this the starter would not disengage from the flywheel when starting the vehicle. It made a very loud metal grinding sound. The vehicle was repaired with a new starter relay.
The worst 1991 Mercury Grand Marquis problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Electrical21
- Brakes14
- Acceleration12
- Airbags11
- Engine10
- Transmission8
- Body4
- Fuel system4
- Lights3
- Visibility3
- Locks2
- Suspension2
- Seats1
- Steering1
- Tires1
Specific symptoms reported on the 1991 Mercury Grand Marquis
Recalls 1
Power train: automatic transmission
- What is wrong
- The park rod assembly contains a park cam with inadequate surface hardness, which could lead to park disengagement or no park engagement when the lever is placed in park.
- Risk
- If park is not engaged and the parking brake is off, avehicle roll-away could result.
- Remedy
- Replace park rod assembly on automatic transmissions.
Recall number 91V048000 · Recall details
See all 1 recalls for the 1991 Mercury Grand Marquis
Defect investigations
Brake line punctures
There is no summary currently available
PE91125
Technical service bulletins for the 1991 Mercury Grand Marquis 40
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Transfer service tips for the front wiper motor mount bracket and depressed park output arm
- This aritlce is to provide information on replacement of old style hood lamp switch to the rvised...
- Some vehicles may exhibit heater core leaks
- Information regarding transmission fluid usage charts
- This information is a supplement to the wiper system service information provided in the workshop manuals
- Subject regarding contamination from prior transmission concerns or excess wear may be trapped in the...
- Subject regarding climate control - eatc - blower motor control service tips
- Information regarding the new transmission cooler flusher- service tip
- Subject on a wire harness terminal repair kit available for repairing electrical wiring harnesses
- Information on identifying non-approved / alternate refrigerants which could cause safety, and performance...
1991 Mercury Grand Marquis fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 5.0L 8‑cyl | RWD | 15 | 22 | 18 |
What 1991 Mercury Grand Marquis owners say
Most recent owner complaints, unedited.
Alternator spontaneously caught on fire after the car was stopped and turned off.
Power window on the passenger side does not go down at all.the car keeps killing the battery and I've already spent money on an alternator used. Brake pedal seems stiff at times and does not grab well at times. Air bag light has been blinking ever since I bought car because of air bag failure. It was disconnected by the garage that the owner before me had bought it from.
After parking vehicle in driveway consumer was emptying the trunk and noticed smoke coming from under the hood. A fire soon erupted from the passenger's side under the hood, and was quickly extinguished. After careful examination of the results, it was determined by a certified mechanic that the alternator and the cable harness caused the fire.
V8 cylinder engine is running 70. 8 cylinder is not getting oil, this causes vehicle to stall out. Please provide any further information.
Consumer was backing out of driveway and driver's side airbag went off without prior warning. Be advised she didn't strike any objects/ a curb or tree. Consumer sustained burns to her body.
Vehicle starts and rides for about 20 miles, then if I have to stop for some reason the car stalls especially if I have to back up. This happens almost dailly. No accidents yet but I am afraid I will cause a serious accident with this problem. I think my car should be recalled and have thid problem fixed.
Ford motor co. Said they are waiting for a judge decisoin on a program to replace. They should just recall affected vehiciles. No safety defect listed.
Consumer was driving about a quarter of a mile when smoke started to come from engine. Consumer pulled over and vehicle caught on fire. Has not contacted dealer.
I parked my car in my driveway and got out. The car was in "park" and I was standing at my opened door reaching to open the passanger door. The car shifted to "reverse". It knocked me down and ran over me with the front tire. It ran over my legs and chest. It then scrapped and dented my wife's car, and was halted by running in to the rear end of my neighbor's car across the street. He is a police officer and he filed the report. My insurance company will not cover any more of my medical bills. I have not been able to work since the accident. I had just had knee surgery before this happened. I am permanently disabled. Please contact me if you can help me. (910) 452-0222.
Compare the 1991 Mercury Grand Marquis
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Questions about the 1991 Mercury Grand Marquis
Is the 1991 Mercury Grand Marquis reliable?
Owners have filed 82 complaints about the 1991 Mercury Grand Marquis, close to a typical Grand Marquis model year.
What is the most common problem with the 1991 Mercury Grand Marquis?
Electrical system, with 21 complaints. Next is brakes (14).
How many recalls does the 1991 Mercury Grand Marquis have?
1 recall, covering power train.
What year does the Mercury Grand Marquis have the most electrical problems?
The Mercury Grand Marquis model years with the most electrical complaints are 2005 (75 complaints), 2003 (51 complaints) and 1992 (41 complaints).
What gas mileage does the 1991 Mercury Grand Marquis get?
Official estimates for the 1991 Mercury Grand Marquis range from 18 mpg combined. The most efficient version (5.0L 8-cyl, RWD) gets 15 city and 22 highway.
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