Most likely cause is a dirty MAF (mass air flow) sensor or IAC (idle air control) valve.
1988 Mercury Grand Marquis 4 door sedan 5 litre from North America
How fast is this thing?
I don't know of anything.
I just bought this car very recently and haven't yet got it on the road. It will be in a day or so. I didn't know anything about it except it was a great deal. But it sounds like I found a gold mine. I can't wait to drive it!!! Is it really fast? What cars does it beat at the lights?
Would you buy another car from this manufacturer? Don't Know
Review Date: 19th August, 2003
1st Jun 2006, 14:36
There are a lot of cars that this machine will beat at lights. But, why would anyone try to race a 4200lb luxury sedan? To each his own, I guess.
1st Jun 2006, 21:58
This poor old car, I shudder to think of the abuse that the kid owner will soon be heaping on it trying to see how fast it is at the lights. I bet he has either the engine or transmission blown inside of three weeks. Any takers?
24th Nov 2006, 02:38
The only thing I beat in my ('88 ls) 5.0 efi was another 5.0 efi. go with the 5.7 of the lsc h.o. if you want to run.
10th Jan 2008, 11:16
I bought a 1988 Mercury Grand Marquis GS, and it is the best car I have ever owned. The power that this car has is unreal, and to tell you the truth I've put a turbo, aluminum cam and crank, and this thing soars to be a sedan. So my deepest thanks goes to the Ford and the Mercury dealerships for making this car.
18th Oct 2010, 17:55
Honestly, I have a 88 Marquis that I bring to car shows. All original; exceptionally kept with 59 K miles. It has hit 98 MPH with my GPS, since the speedometer only hits 85. I would not take this car any faster, or really gun it at all. You try hauling 5400 LBS with 200 HP. It's made for cruising and taking on trips. Not a redlight burner. Unless you seriously soup up the engine, chances are you will mess it up pretty bad.
Honestly, for that being a show car, you know very little about it. The stock 1988 Grand Marquis weighs less than 4000 lbs. And the 302 V8 put out 150 HP/270 pounds of torque stock with the Ford 5.0 Liter 302 V8.
1988 Mercury Grand Marquis GS 5.0L 302, 8 cylinder from North America
An oil leaking bargain
When I bought the car there was a gas leak.
The battery froze the winter of 2002.
The altinator was not charging enough.
The rad was finished.
The oil pan has a pin hole in it (a quart of oil a day).
Just minor things.
This car handles Great.
No problems except having to ad oil to it 3 times a day.
Great passing gears, at any speed.
It can 0 - 60mph in 9 seconds.
Exhaust has a leak.
But runs nice.
Would you buy another car from this manufacturer? Yes
Review Date: 25th March, 2003
Average review marks: 8.4 / 10, based on 16 reviews