I have a 2000 Grand Marquis that has the PATS light going off on dash, ABS and cooling fan coming on by them self, and a horn that is going crazy. What could be wrong?

Clay2054
0

Asked by Clay2054 Feb 10, 2013 at 02:59 PM about the 2000 Mercury Grand Marquis LS

Question type: Maintenance & Repair

I have a 2000 Mercury Grand Marquis that has about 135,000 miles on it. 2 weeks ago I had the car
at a relatives and the horn started going off for no reason at all. I took it for a test drive to see if it
would stop and it wouldn’t the horn was going off while driving. I parked it and pulled the horn fuse
and this did not resolve anything. The horn continued to sound off whenever it wanted. I proceeded
to drive the car home. When I did smoke came up from where the steering column cover meets the
dash. The smoke dissipated and I didn't see any more. I then drove the car to and from work (47 miles
round trip) with no foreseeable problems. The next day I fired it up and drove to work and still
nothing wrong. I parked the car and worked a 8 hr shift. Next, I walked out to warm my car up and
the car fired up right away. When I went back after 10 minutes of warming up the car was dead. I had
a buddy jump the vehicle at work and it again fired up but then cut back out after like 45 seconds of
running. After that the security light flashes rapidly and car will not turn over. I now have a cooling fan
that turns on whenever it wants to as long as the battery is connected, a horn that triggers itself, and
I could hear the ABS system trying to kick in by itself. I have since replaced the radiator fan relay, the
EEC relay, and just replaced the ignition switch. None of this has helped. Now I can’t hook up my OBD
code reader. The reader says it can’t link to the PCM through the data link connector. I also noticed
that the check engine light will not illuminate when the car is turned on.  Further I took out the “brain”
and the cooling fan still comes on by itself. I had a family friend check all fuses and relays and
everything checks out ok. To me it sounds like I have a problem with the "brain"/engine control
computer or maybe a short somewhere. What suggestions do you have to fix this problem?

2 Answers

Mark Langolf
495

Check to see if FORD has a recall on your car also if have taken the brain out an its still having same problems after reinstalling the brain it may be time to get a new one from FORD or dread I say it put the car out of its misery.

2 out of 2 people think this is helpful.
natebaxboy
0

what's interchangeable with steering column for a 2000 grand marquis

Your Answer

Add photo

Related Questions

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 2,050
#2 kbro
kbro
Reputation 1,120
#3 Tom Demyan
Tom Demyan
Reputation 470
View All

Related Models For Sale

Used Ford Crown Victoria"
33 Great Deals out of 1,472 listings starting at $1,750
Used Lincoln Town Car"
109 Great Deals out of 2,973 listings starting at $1,350
Used Chevrolet Impala"
1,838 Great Deals out of 65,134 listings starting at $995
Used Ford Mustang"
955 Great Deals out of 27,780 listings starting at $1,500
Used Ford Taurus"
608 Great Deals out of 19,222 listings starting at $1,499
Used Buick LeSabre"
117 Great Deals out of 3,211 listings starting at $1,000
Used Cadillac DeVille"
62 Great Deals out of 3,034 listings starting at $1,598
Used Ford F-150"
2,953 Great Deals out of 157,198 listings starting at $1,500
Used Chevrolet Tahoe"
1,025 Great Deals out of 31,303 listings starting at $2,283
Used Honda Accord"
1,230 Great Deals out of 69,683 listings starting at $1,288
Used Buick Park Avenue"
24 Great Deals out of 744 listings starting at $1,800

Used Cars For Sale

2010 Mercury Grand Marquis LS For Sale
7 Great Deals out of 127 listings starting at $10,887
2009 Mercury Grand Marquis LS For Sale
9 Great Deals out of 156 listings starting at $6,932
2008 Mercury Grand Marquis LS For Sale
14 Great Deals out of 184 listings starting at $5,500