I'm the owner of the 2000 Lincoln Towncar Executive with 7800 miles. After the latest installation of the PCM processor by the dealer and driving it for 12 days everything shut-down again while on the freeway....same as before. I had the car towed back to the dealer again yesterday and I'm awaiting word on what they're going to do with it. The tow-truck driver said when he was in mechanic school his instructor taught him when installing a new battery to install the negative post first ...if connecting positive post first it would send a bolt of energy to the computer and throw it of! Do yo think there could be something to this idea?The trouble seemed to begin with the installation of a new battery! Your advise will be greatly appreciated....L Erwin
Country: United StatesMake: LincolnModel: Town Car ExecutiveYear: 2000
New battery, new battery cables, new APS Module, and new PCM Processor
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Hello!Did you still need help?Are you saying that the engine stalls out while driving?Does it start right back up when this happens or do you have to get it towed to the dealership each time this happens?Does it crank over and not start when this happens?No codes in the computer?
Yes I still need help! It totally cuts off! Sometimes when I stop it will start and if I try several times it will start and drive for awhile at lower speeds and then do the same thing. The odometer reads ------when this happens then comes back on ....off and on! So unpredictable I have it towed back to dealership.I don't know how to answer "No codes in the computer?"
Ok. based on what your telling me, this is usually a bad instrument cluster.However, any module or sensor that receives a 5 volt reference can cause this problem when it shorts out.So, when this happens, you are going to want to check for 5 volts going to the TPS sensor with the key on. If there is no reference voltage going to the TPS when this happens from the computer with the key on, then the computer is not awake and the engine will not start.
I shall relay this info to the dealership who's been working on it. About 2 wks ago they said they had checked out everything and tested it out...everything was ok. Of coarse they said that the time before and when I picked up the car and drove about 3 miles down the freeway in heavy traffic it shut off same as before! Thanks.
You bet! Also, have them check for codes in the instrument cluster.I hope this helps! Please don't forget hit the green accept button so that I may get credit for the time that I have spent with you. This is necessary for me to be paid for my work and get credit for assisting you. Your question will not close, and you will still have the opportunity to follow-up if needed. Leaving a bonus and positive feedback is not required, but doing so is certainly appreciated!I do hope you are as honest with me about your vehicle as I have been with you. If you have any further questions or if you need more assistance, just hit the reply button and we can continue our conversation. Please remember, even if you accept my answer now, you can still reply or respond back to this thread at any time you wish at no further cost to you. In addition, please allow time between answers as I may be off line spending time with my family or assisting other customers. You can always request me by using the link through my profile page. Just Click on "AMEDEE" next to my picture and I will be sure to respond back in a timely manner. Thanks in advance!Best RegardsAMEDEE
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Thanks for your help! The dealership said they removed the PCM processor and found a wire dangling from there that had touched the fuel pump, got hot and caused a short! I've been driving the car for 3 days... they think they've fixed it...I hope so!
Thanks for the update! Lets keep our fingers crossed!AMEDEE