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Grand Marquis starting nightmare

13 messages,  Last post on Mar 08, 2012 at 12:42 PM

You are in the Ford Crown Victoria/Mercury Grand Marquis Forum.

What is this discussion about? Mercury Grand Marquis, Engine, Sedan

Messages Page 3 of 3

#12 of 13 To Marquisman by shlbycindy

Jan 14, 2010 (5:08 pm)

They ended up replacing the computer on my car and now it starts every time without hesitation. The other day it was 12 degrees here and it started right up. It cost about $500.00 for everything. I ended up taking it to a local mechanic who sent it to an electrical shop that was able to find the problem. It was the part of the computer that controls the fuel injectors. The funny part is there was a car from the local dealership there that had the same problem only the dealership couldn't figure it out. I'm betting the owner of that car paid a lot more than I did. Once the shop replaces the computer they have to reprogram it and your keys to your car. So, you can't just buy one and replace it yourself. The Ford place wanted to replace the fuel pump which was going to be around $700.00 and wouldn't have helped at all.

#13 of 13 Re: 1996 Mercury Grand Marquis Odometer/speedometer problem [19cami57] by johnny109

Mar 08, 2012 (12:42 pm)

Replying to: 19cami57 (Dec 13, 2009 11:13 pm)
I also have a 1996 Grand M and have had both problems. The intyake manifold will be plastic whether it was replaced or not. The issue with this is there are no metal inserts molded into the plastic at the fastening screws and under pressure the plastic cracks. The replacement intakes have those metal inserts. When mine blew ( steam and water out the back of the car on the highway) I called Ford Motor and was told that it was not subject to recall, although at the time, it was under consideration. I seem to recall that they said that if the car had survived a certain amount of time (or mileage), which mine was past, they would not help. This was 10 yrs ago or so and it cost me $800. If you don't do work on your car, a mechanic should fairly quickly be able to get in there and tell you whether you have a replacement manifold. Rmoving one of the hold-down screws and looking into the hole should show a metal insert or not. Also, Ford may have a history on the car and be able to tell you.
 
As for the speedometer, a few years ago I noticed that my needle was hesitating and then jumping up and around. Some time later, my odometer quit working, but my speedometer still works and no longer jumps. I took this as a sign that a gear inside the dash unit that drives the odometer had failed, temporarily interfering with the other gears. I have not had it fixed but I imagine that removal of the speedometer assembly and replacing the gear would be necessary. I don't know about the smoke situation but I also had a heater core failure that causes leakage of fluid inside the cab and produces a filmy smoke that gums up the windshield and stinks. Since I live in Florida, I just disconnected the heater hoses to the engine and plugged the connections on the motor. Hope this is of some help to you.

Messages Page 3 of 3

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