Mercury Grand Marquis

http://Toyota.autoboardz.com/Mercury-Grand-Marquis-ftopict226436.html (Mercury Grand Marquis)
Hello, I'm a wholesale buyer, I buy Mercury Grand Marquis, Chevy Suberbans, and GMC Yukons and Suberbans. If you are a dealer and want someone to buy all your trade ins, I'm your man. Email me: . Steve

http://Toyota.autoboardz.com/1990-Mercury-Grand-Marquis-ftopict226383.html (1990 Mercury Grand Marquis)
~83K miles. Starts great. After a few minutes, idle gets rough. Can't hear any vacuum leaks, no "check engine" lights on. Bought one of those plug in engine testers. That tells me the EGR may be malfunctioning. Questions...what exactly does the EGR do, route some exhaust back to the engine to..
« Sure it can.........but so can a bad plug wire or plug. There are a number of things that will cause a rough idle. »
« My 1983 grand marquis has had problems with the EGR valve; every once in a while a carbon deposit will build up inside it, and eventually gets big enough that it holds the valve open. What ended up.. »

http://Toyota.autoboardz.com/1985-Mercury-Grand-Marquis-HELP-ftopict226442.html (1985 Mercury Grand Marquis - HELP!)
I bought this car from its original owner for $500 with only 65,000 miles on it. Seems like it runs and drives pretty good, but it's getting horrible gas mileage. Seems like it's getting about 9-10 MPG. It also idles very high all the time. And sometimes when you start it up in the morning it s..
« The vacuum thing may be for the automatic parking brake release when you shift out of Park to Drive. The erratic idle & hard start could be from a dirty IAC valve. You say the engine on the '85 is E.. »
« Uh... It's INSIDE the car cabin? If it hisses all the time, it's leaking.. and that will cause high idle on an EFI. Good thing you thought to mention that. -- Yeh, I'm a Krusty old Geezer, puttin.. »
« The engine has TBI (Throtle Body Injection). From what others have told me, it was standard equiptment on these cars. -Tony »
« Good advice above. Also, if it's similar to GM's TBI, if the gasket under the TBI goes bad, it'll idle too high and suffer poor fuel mileage. A simple fix for this! s »

http://Toyota.autoboardz.com/PCV-2001-Mercury-Grand-Marquis-ftopict226389.html (PCV on 2001 Mercury Grand Marquis)
Where is this valve located and is it a reasonable/simple job to replace it yourself? George
« PCV valves are on the rocker cover. You will either be able to pull it out or unscrew it. I am unfamilliar with the car so I am not sure which it will be. Try pulling it off and blowing carby cleane.. »

http://Toyota.autoboardz.com/2004-Mercury-Grand-Marquis-Steering-ftopict226370.html (2004 Mercury Grand Marquis Steering)
Has any one driven the new 2004 Mercury Grand Marquis and can report how the car steers? Previous years of this car has had a steering reputation of wanting to drift. I have read that the components of the steering unit have been replaced with an improvement. I have not had the chance to test dr..
« i imagine the 2003 isn't too much different than the 2004 i had a 2000 and was very satisfied, the 2003 changed to RACK AND PINION so i'll have to wait. the hub caps are noisier and the rims have be.. »
« I rent Grand Marquis when traveling and the 2003 & 2004 are an improvment over the prior units - no more drifting on the highway with a moments inattention to the helm. »

http://Toyota.autoboardz.com/Mercury-Grand-Marquis-96-CoolDex-ftopict226373.html (Mercury Grand Marquis 96 - CoolDex?)
I just bought a Grand Marquis 96. Was this car delivered from the factory with CoolDex or normal cooling fluid? I am thinking about flushing the system but since it only has 50k miles on it maybe that is not a good idea if it is filled with CoolDex..?
« I don't know nuthin' about what type of coolant but can recommend that you check the intake manifold as they crack near the thermostat and let the coolant leak out. See for some more details. .. »
« There is no visible leak on the manifold. Should I replace it anyway? How much does it normally cost to have it replaced or is it easy to do myself? Oh, and I messed up the name of the coolant in my.. »
« Dexcool is usually found in General Motors vehicles. Check the owner's manual or service manual for the correct type of coolant. There may also be a label on the coolant reservoir. The color of th.. »
« Ok, the reason I am asking is because the Haynes manual said that some models have DexCool. But maybe they just copied and pasted that part from the chevy book... I will buy a Chilton book for .. »

http://Toyota.autoboardz.com/Loud-Flasher-1991-Mercury-Grand-Marquis-ftopict226385.html (Looking for Loud Flasher for 1991 Mercury Grand Marquis)
The original flasher (Wagner 325) was loud enough but the click rate had slowed way down. I bought a replacement Tridon but you could hardly hear it. Then I tried the Tridon LF-12 Loud Flasher. It was about as loud as the original Wagner but because of it's greater height, you could not put the..
« Wagner probably still makes a flasher for the car. Perhaps they use a different number. You can try your local auto store. Have you tried the dealer? Jeff »
« I think the one you need is a wagner 552 heavy duty. »

http://Toyota.autoboardz.com/Transmission-Issues-88-Mercury-Grand-Marquis-ftopict226402.html (Possible Transmission Issues, 88 Mercury Grand Marquis)
Yeah it's an old car, so of course if there are transmissions issues that shouldn't be a surprise due to its age. Anyway. It has about 150,000 miles on it, the behavior I've noticed is this. It has just started "roaring" when it shifts into overdrive. Also, it's reluctant to downshift at lower s..
« It was nothing more than the downshift (or "butterfly"{?}) cable had become disconnected from the throttle control thingie. A mechanic reconnected it for $20. Fortunately the transmissions didn't .. »
« "Larry R Harrison Jr" wrote I assume he replaced the nylon bushing the cable's "pin" goes through at the throttle body lever? It's a well-known problem part that disintegrates over time and causes m.. »
« So, I assume it's safe from "burn-out" now that the clamps ARE getting pressure? That's what the mechanic told me--that if it had "burned out" prior to his replacing the cable, then it was too lat.. »
« Hmm... if it WAS slipping, that would sound reasonable to me. »

http://Toyota.autoboardz.com/Mercury-Grand-Marquis-auto-shift-gear-ftopict226379.html (Mercury Grand Marquis auto won't shift into gear)
My mother's 1996 Mercury Grand Marquis LS automatic won't shift into gear. She says that she has to pump the breaks dozens of times before it will shift out of park. Sometimes while pumping the breaks it will almost go to the floor, then you can shift in gear. Someone thought it was pressure relat..
« That sounds like a good possibility. Do you know where this solenoid might be located? »
« It's near the bottom of the steering column, if it's anything like the one on my Aerostar. A common problem is the shifter linkage tube and the rod that slides inside it get bent or broken, as I fou.. »
« It is likely a bad brake light switch. If the brake lights do not work and the fuse and lamps are OK, it is more likely the problem.. You can check the lamps by turning on the 4 way flasher to see .. »

http://Toyota.autoboardz.com/99-Mercury-Grand-Marquis-Rough-Idle-Stalls-ftopict226433.html ('99 Mercury Grand Marquis Rough Idle/Stalls)
I have a '99 Grand Marquis recently it started have problems at idle. Sometimes it idles but it feels like it is idling below its normal idle speed. When driving it doesn't have a problem at any speed, however, occasionally when cornering it will die. The check engine light has not come on (other..
« IT sounds like tha IAC is dirty. Many times they can be cleaned and reinstalled after soaking in throttle body cleaner for a while followed by a good spray dousing. While you are at it, it would b.. »

http://Toyota.autoboardz.com/1996-Mercury-Grand-Marquis-FOB-reprogramming-ftopict226395.html (1996 Mercury Grand Marquis FOB reprogramming)
Howdy, I need to get a new FOB for my 96 Merc Grand Marquis and needed to know if there is a procedure I can use to re-program the computer to accept the remote or if I need to take it to the dealer. I plan on buying used via Ebay and have matched the FCC ID numbers to the existing remote. It's ..

http://Toyota.autoboardz.com/1991-Mercury-Grand-Marquis-Door-Lock-Motor-ftopict226427.html (1991 Mercury Grand Marquis Door Lock Motor)
I have had problems with all the door lock motors on this car with 110,000 miles. I've been able to replace them myself but this time the RIGHT FRONT door cannot be opened from inside the car or from the outside using the pull handles. The key will not turn clockwise to the unlock position but wi..
« Try a "Slim Jim" at the outside of the door's dew wiper to see if you can lift & force the mechanism to let go. Squirt some PB Blaster down there first, to let it remove any rust that's blocking the.. »
« your motor is locked and you might have to take it to the shop had one done the same and the only way i could losen it up was to tare the door panel up best is to take it to the shop and i would un .. »
« if you have to tear panel out step one would be to remove the seat .. that gives you alot more room... but b4 you do this go to wreckers and see if there is another car there with matching door pa.. »
« Thanks to all who responded. Regarding the slim jim, how do you know what/where you are trying to hook? I'm surprised a recall was never issued on this safety problem as in the event of an accident.. »

http://Toyota.autoboardz.com/Mercury-Grand-Marquis-96-keyless-entry-pad-ftopict226374.html (Mercury Grand Marquis 96 - keyless entry pad)
How do I reset the code on the keyless entry pad (door code lock)? The previous owner didn't know the code so I need to reprogram it. (Mercury Grand Marquis 96 LS/Bayshore)
« look on the passenger side trunk hinge. there should be a 5 digit number there. that is the factory keyless entry code »
« Where would the code be on a 2001 Ford Explorer? Falcoon wrote: »
« there. Yup, there was a code and it worked. Now how do I change it to something else? »
« You really need to get an owners manual. All the questions you're asking are easily answered there. Check the junkyards CJ »

http://Toyota.autoboardz.com/Grand-Marquis-RATTLE-ftopict226431.html (Grand Marquis RATTLE)
My 2003 Mercury Grand Marquis (4.6l) has developed a continuous rattling noise in front when operating temperature is reached and the car is stopped in drive with my foot on the brake. I believe I have narrowed down the source of the noise to the Accessory drive belt and belt tensioner. The ra..
« REPLACE IT !! Buy a new tensioner it is easy to do, I change them when I change the belt. I just did mine on a 2003 Crown Vic today with 78k. miles and it took less than 15 minutes. »
« Try a blast of silicon spray on the belt and tensioner. I know, the idea of putting lube on a belt is just wrong, but a mechanic shared this with me some time ago - just for the flat serpentine b.. »

http://Toyota.autoboardz.com/car-blowing-fuses-Grand-Marquis-ftopict232219.html (car blowing fuses [ Grand Marquis])
I have a 1995 mercury Grand Marquis that when you make a sharp right turn it blows a 20 amp fuse and will not start any suggestions on what may be causing this thank Jim...
« just for shits and giggles, what does that blown fuse supply power to. »
« jim,your battery isnt loose and toching the hood is it? just grag it ,see if its loose and any scorch marks on the hood. lucas »
« jim , i would try a new fuel pump relay first, if it continues to blow,an inspection of the wireing and new fuel pump may be in order.that relay should be with the fuses under the hood i think,littl.. »