Mercury - Grandmarquis :: 1988 - Jerks Intermittently - Don't Downshift
1988 Mercury Grand Marquis
It jerks on occasion. Seems to do this at the point when it should downshift, but does not downshift. If I press down on the gas so that it downshifts then it runs fine.
Does it worst in cruise control. If I take it off of cruise control I can 'feel' when it is about to jerk and I can prevent it from jerking by either letting off on the gas a little bit, or pushing down on the gas so that it downshifts. Some of the time in cruise control it downshifts very smoothly.
It was getting worse and some good injector cleaner added to the gas seemed to solve the problem but it never did go away completely.Lately it has been getting a lot worse, mainly on moderate upgrades. Have not had a chance to get more good injector cleaner recently. The jerk is almost like the computer tells the engine to shut but then changes its mind.
1988 Ford Crown Victoria
Did a similar thing, mostly on fairly flat ground at around 35 MPH constant speed, when it seemed to be indecisive on whether to downshift or not.
Mercury - Grandmarquis :: 1997 - Interior Lights Staying On / AC Making Tapping Sound Behind The Dash
I've been having a problem with some of the interior lights staying on and killing my battery each night. The lights that stay on are the climate control lights, gear shift light, and the lights on the door for the windows and locks. Every time i have to crank up i have to get it jumped off. If i pull the fuse out for the tail lights i no longer have the problem. I was wondering does it have something to do with the lighting control module or maybe the headlight switch.
I also have been having a problem with the a/c making this tapping sound behind the dash. Even with the a/c off you hear this constant sound as long as the car is on. I have no clue what is going on...
Mercury - Grandmarquis :: 2001 - Steering Not Returning To Center
We just took in a 2001 Grand Marq with just shy of 170,000 on the clock. Super clean old man's car, runs great. I took it for a test drive with it today, and I noticed the steering does not return to center after a turn. It seems to stop at about the 1/8-1/4 turn mark, and you have to manually have to turn it back the rest of the way. It makes for some odd feeling driving. Now the car has already been through our shop, but they did not see any problems. The tires are like new, and otherwise, it runs great?
View 7 RepliesMercury - Grandmarquis :: 2001 - Glowing Red And Sparking Underneath Vehicle
Changed intake manifold on it, because it had cracked and warped. After changing, now the exhaust line that leads under the car is glowing red and sparks were seen coming from under the car too. Cannot figure out why. It was suggested that something may have fallen in when we changed the intake manifold but I don't remember seeing anything falling in.
View 6 RepliesMercury - Grandmarquis :: 2001 - Check Engine Light Came On / Misfire On Cylinder 4
I have a 2001 Mercury Grand Marquis. The check engine light came on and AutoZone diagnosed it as a misfire on Cyl. #4. I changed all the plugs but I do not know how to turn off the light to see if I fixed the problem. How to turn the light off.
View 3 RepliesMercury - Grandmarquis :: Won't Start Sometimes
Although it starts most of the time, about two times a week it will act as though it's going to and won't. We had it in a shop for about 3 weeks and the mechanic said it started every time for him. When I got it back, within a few days it would not start. I try after about an hour and it starts. He ran diagnostic tests and nothing showed up. I want to give this car to my teenage granddaughter and I can't have this problem.
View 10 RepliesMercury - Grandmarquis :: Vibration When Traveling At About 60 To 65 Mph
Getting slight vibration when traveling at about 60 to 65 mph. Tires are almost new and had them rebalanced about 2000 miles ago. Shocks are less than a year old. Wondering if it is a wheel balance problem or possibly an alignment problem.
View 6 RepliesMercury - Grandmarquis :: 2007 - A/C Is Not Cooling
How the HVAC system on the big Merc and Crown Vic are controlled. One answer says it's vacuum, another says it's electrical, another says electronic via the BCM. Which is correct? Does it have an electric servo to move the flapper door(s) like the Taurus I'm familiar with? Even the BCM has to have something to tell to move the flapper doors.
In the car I'm looking at, the lines into and out of the evaporator are cold when A/C is selected and the compressor clicks in. That makes me think the issue is with air direction. All I have to do is figure out why.
Mercury - Grandmarquis :: Will Not Start After It Gets Warmed Up
Have a 2000 grand marquis that will not start after it gets warmed up. Recently had two occasions where after driving for about half hour and it's shut off, it will not start. Cranks good, but will not start. After it "cools down" it will start. Have had it to my mechanic and the dealership. They can't find anything??? They say it has to get worse before they can make it better. They don't want to start throwing parts like fuel pumps at it.
View 4 RepliesMercury - Grandmarquis :: 2002 Will Crank But Never Turn Over
My garage was struck by lighting this morning, and about two hours later I heard a very loud snap coming out of the vicinity of my garage. The snap was so loud, my ears were ringing. When I went to start my car (2002 Mercury Grand Marquis), it would just crank, but never turn over. The interior lights and trunk lights did not work, so I replaced the battery thinking that the power surge could have affected the electrical system of my car...and I needed a new battery anyway. With the new battery installed, all of the lights once again work, but the car still will not start. The voltage meter is low and it never runs low. I tried resetting the fuel pump shutoff, but it was never tripped and I can hear it pumping when I turn the key on. Is it likely that the mechanical failure is due to forces outside of electricity even though this car has never failed to start, or could the electrical surge have affected something else (alternator, fuses, etc.)?
View 19 RepliesMercury - Grandmarquis :: 2002 - Windshield Wipers Not All The Way Down
My windshield wipers do not park all the way down. The left one is up at a 5 degree incline, the right one more like 15 or 20 degrees. I went through a car wash today, and the air dryer blew them all the way to the left, and back to the right a little. I turned them on and back off, and they returned to the original position (5 and 15 degrees). Car is 2002 Grand Marquis LS.
View 3 RepliesMercury - Grandmarquis :: Shuddering When Accelerate Especially Uphill
My '03 Grand Marquis "shudders" when I accelerate, especially up hills. It feels like it cuts in and out momentarily, shaking backward and forward. Here is what I have had done, based on mechanics' advice: replace spark plugs, replace fuel filter, clean throttle body, clean mass airflow sensor. It still does it after all this and I am stumped.
View 4 RepliesMercury - Grandmarquis :: CEL Blinks On And Off In Intervals And Seems To Be Missing?
Today while driving my 03 marquis the check engine light started blinking, after a few blinks I noticed it stopped . But a few moments later it started blinking again then stopped, so on an so on. I also noticed that the car had a immediate loss of power and it seemed like my car was missing, and while trying to give it gas it would shutter. It never killed on me but I can tell it ain't running right. A friend of mine told me to push the brake down while car was running an in drive, an give it gas like you was going to,"power brake it". I did, and instead of it power braking it just shook forward as if it only had 4cyl instead of 8cyl. then my buddy said its a bad "coil", no how he knows that idk. But is that true or what it might be???
View 8 RepliesMercury - Grandmarquis :: 1994 - Won't Accelerate Very Fast?
We have a 1994 Grand Marquis. Sometimes when driving the check engine light comes on and suddenly she doesn't want to accelerate very fast at all. If you do try to hit the gas, it sounds like the engine speeds up but there is no change in acceleration. It is also hard to get to/over 50mph. If you pull over and rev the engine a few times (slowly) there is an audible click from somewhere inside the engine. It will happen a few times and then the car seems fine. Inevitably the issue will come back a some miles down the road.It doesn't get driven every day and so far we have not had the light come on when we are near anyone that can read the error. Also, it resets and is not on if you turn the car on and off, even if the problem persists. It only comes on while driving (though it will stay on if put into park and left running). Oh, and possibly related, it seems that the air that is put out form the defroster is very damp when this happens (sometimes).
View 3 RepliesMercury - Grandmarquis :: Buzzing Noise Under The Hood
Several minutes after I start driving in the morning, my car starts making a strange noise under the hood. It sounds like a motor running, or a strange buzz. After a few minutes, the noise stops stops. When it does, and if I'm stopped at a light, my engine jerks one time. The engine actually shut off one day, but I could start it right up. It does this once during the trip. The speed of the car or engine has no effect on the sound, but it stops if I turn the car off. If I restart the car, the noise does not return.
View 4 RepliesMercury - Grandmarquis :: 2000 - Stalling When Turning Right
What would make a 2000 mercury grand marquis stall when turning right? I turned the key and it started running again. Check the engine light and it was po442 which is the emissions leak.
View 3 RepliesMercury - Grandmarquis :: 1998 - Won't Start - Alternator?
So earlier today when I tried to start my car it wouldn't start! I tried cranking her over twice and I got nothing. The battery gage needle didn't move when I tried starting her up the few times. What's weird is that I took my other car (parents) out to run the errands I needed to run and when I got back I thought to myself "well maybe the battery is dead and needs to be jumped" that makes sense right? So as I pull up next to my car I decided to try starting her one last time and when I put the key in and cranked her over she started right up! Not a stutter or anything! So I'm left with the feeling that maybe it could be a failing alternator ? Or possibly a loose cable or something ?
Btw the car is a '98 Mercury Grand Marquis.
Mercury - Grandmarquis :: Check Engine Light Is Dead
For years, intermittently, my Check Engine Light was on steady. The Ford dealer tried four times (at a cost to me of nearly $400) but was never able to fix the problem. I was always able to get it smogged because I took it in during those periods when the light was functioning normally. But now I've got to get the car smogged again and the light is dead. Could be the bulb or something else. Should I take it to an electric shop or a regular mechanic? I understand that CEL issues are common to Fords of this vintage, but the Ford dealers haven't been useful.
View 15 RepliesMercury - Grandmarquis :: 2000 - Starter Not Cranking When Turned The Key
I have a 2000 Grand Marquis. Yesterday I turned the key and the starter didn't crank. Everything else came on like it is supposed to. Radio, dash, warning lights, etc. After trying a few times, it started but the starter wouldn't disengage. I had to disconnect the battery for it to stop. I changed the ignition switch and cycled the key, but when I try to hook the battery back up, the starter immediately begins to crank. Even when the key is off and out of the ignition.
View 1 Replies