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Ford Crown Victoria/Mercury Grand Marquis Transmission/Suspension

87 messages,  Last post on May 18, 2009 at 10:29 PM

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What is this discussion about? Ford Crown Victoria, Mercury Grand Marquis, Suspension, Transmission, Sedan

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#44 of 87 tranny slipping? by hyphy Aug 30, 2007 (6:05 pm)
yes i have a 97 vic. and sometimes when i excelerate the engine revs for a few second then it will shift. what could the problem be and how and how much does it cost to fix Replies to this message: euphonium (Aug 31, 2007 10:13 am) jsylvester (Sep 01, 2007 6:20 am) captain131 (Sep 14, 2007 2:34 pm) bestracer500 (Jan 26, 2008 7:19 pm) teachinjose (Sep 15, 2007 7:31 pm)
#45 of 87 Re: tranny slipping? [hyphy] by euphonium Aug 31, 2007 (10:13 am)
Replying to: hyphy (Aug 30, 2007 6:05 pm) If you have over 40,000 or it has been 40,000 since, change the transmission oil including the turbine. If you plan to keep the car change to a semi synthetique, it's costly, but lasts longer and performs better. Mercon V is the one.
#46 of 87 Re: tranny slipping? [hyphy] by jsylvester Sep 01, 2007 (6:20 am)
Replying to: hyphy (Aug 30, 2007 6:05 pm) It's hard to say - usually the sign that the transmission fluid is old is you will start to get "stuttering" when the transmission tries to shift into 4th gear. As mentioned above, it is the torque converter that gives you warning of that issue.   The poster above is correct in regards to the fluid to use - Mercron V is backwards compatible with all Grand Marquis back to 1992.   This is just my personal preference, but when I change the fluid, I drop the pan and change the filter as well - in my mind power flushing just forces all the dirt in the filter back into the transmission. That will also allow your mechanic to see how much trash is attached to the magnet in the pan, and whether there is something more serious to fix. Replies to this message: captain131 (Sep 14, 2007 2:34 pm) bestracer500 (Jan 26, 2008 7:19 pm) teachinjose (Sep 15, 2007 7:31 pm)
#47 of 87 Re: tranny slipping? by captain131 Sep 14, 2007 (2:34 pm)
Replying to: jsylvester (Sep 01, 2007 6:20 am) Hi Folks, I have a 99 Grand Marquis that has had major issues, but only has 44K miles on the engine. I should preface this that my mother bought it back in 2001 with 21K miles on it. She knows nothing about cars, and the ford dealer at the time took advantage of her (IMHO). She never did a carfax (not that she would know what that is) on it, but I have since. It was originally owned by a "major car agency" (I believe that's speak for a rental) in Virginia. They shipped it to MA and she bought it. Over $6,000 later (not including the cost of the car) I have had numerous issues.   I have an extremely trustworthy mechanic and excellent diagnostician when it comes to cars of all makes - but this one has stumped him for the past 4 months. We had a total of 21 bad codes on the computer and after taking things apart we found evidence of salt water corrosion. Anywho, the car would drive at any speed and suddenly shut off - very dangerous. He was able to fix that. Down to one last problem - could use your thoughts:   When driving in OD, usually b/w 30 and 60 MPH, the car shutters a bit and the trac control light comes on. It happens occasionally when I'm driving with the OD off, but very infrequently. My mechanic has replaced every module and computer and bypassed wiring harnesses with clean, direct connections, to no avail. He brought it to a local Ford dealer, explained the situation, and they were at a loss as well. They mutually decided to replace (I believe) the traction control/ABS (?) module and reflash the computer. Still no joy.   Any thoughts? I'm thinking it's a tranny issue, but he already flushed and filled with Merkon V. He has gotten to the point where he has stopped charging me any labor, but that always puts me on the back burner when it comes to him fixing cars. I don't want to go somewhere else and start over again, and I certainly am not interested in going to Ford dealer as they seem to not give a crap.   Any thoughts, ideas, suggestions ???? Please - If this car had theft on it I'd actually consider drastic measures.... Replies to this message: bestracer500 (Jan 26, 2008 7:19 pm)
#48 of 87 '91 CV LTD wagon. Is Mercron backwards by teachinjose Sep 15, 2007 (7:31 pm)
Replying to: jsylvester (Sep 01, 2007 6:20 am) compatible w that car, too? I bot over $200 worth of Amsoil fluids and want to make sure they're okay for my old "tuna boat". The factory rep said they wear.   Also, do you think it's rational to want to keep the ol' girl running? The engine is strong,5.0L/150 hp, and it needs about $1500 in body work. Interior's very clean. This is the most comfortable riding car I've ever had, and I'd like to drive it for a couple of decades more, maybe even past that!   Thanks for all the tips.
#49 of 87 may have an your answer by tdock Oct 03, 2007 (5:54 am)
I too had the same problems with my gm. At speeds of 38 to 42, mostly going up a hill the temp light would come on followed by the traction control light. I could feel the transmission not locking up. My gm is a 2000 with 67200 miles on it. And was also a former rental.   I just got the car out of the shop yesterday. They rebuilt the transmission. The torque converter was the real culprit. It burn out out the overdrive band in the tranny. By talking to the tech that fixed my car, this is a common problem with these transmissions. Luckily for me I had 40 miles left on my extended aftermarket warranty and the repair was covered. The cost of the repair was just under $1900.00.   Hope this helps. Replies to this message: euphonium (Oct 03, 2007 8:37 am) captain131 (Oct 05, 2007 7:38 pm)
#50 of 87 Re: may have an your answer [tdock] by euphonium Oct 03, 2007 (8:37 am)
Replying to: tdock (Oct 03, 2007 5:54 am) Excessive heat is the No. 1 enemy of AT's. At only 67000 miles, an auxillary transmission cooler is an excellent idea. Examine the 10,000 lb model.
#51 of 87 Re: may have an your answer [tdock] by captain131 Oct 05, 2007 (7:38 pm)
Replying to: tdock (Oct 03, 2007 5:54 am) My problems were many, but what ultimately got the traction control problem solved was a new ABS module and a reflash of the PCM. Turned out that the part # on the ABS that was provided to Ford for the replacement months ago was the wrong part #, albeit this part # came right from the module installed in the car. The only explanation that makes any sense is that the original ABS module was replaced with the wrong one. So replacing the wrong module with the wrong module again obviously doesn't solve anything. We proved it to the Ford service dept (they tried charging me another $700 for a different module), but got them to relent and take back the wrong one and replace with the correct one. Everything seems to be back on track, to use a bad pun... Thanks to everyone for your input.
#53 of 87 Re: transmission problem w/ '02 Crown Vic [crownvic2] by pepperdog Nov 22, 2007 (7:51 pm)
Replying to: crownvic2 (Apr 29, 2006 7:55 pm) take some electrical contact cleaner and spray the mass airflow sensor. This will clean it, and might solve the driveability situation.

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