changed pcm o 1998 lincoln towm car -- won,t start

60

Asked by Oct 14, 2015 at 10:34 AM about the 1998 Lincoln Town Car

Question type: Maintenance & Repair

before   showed no power to 1 , 2 , 3 , & 7 cyl.   changed all coils  %  all plugs online replacement pcm pre-flashed from  flagship one     was running on other 4 cyl  prior to work    turns over strong now but won,t start ???

7 Answers

109,455

I do hope that the battery was disconnected before you put in the replacement ECM. Does the check engine light come on for a few seconds then go off if the key is turned to just the on position?

1 of 1 people found this helpful.
Best Answer Mark helpful
60

battery unhooked both post ck engine light comes on and stays with ign in on position

1 of 1 people found this helpful.
109,455

Then you have a hard failure somewhere, you need a code checker with "live data" capabilities so you can see if the ECM is even sending or receiving signals.

1 of 1 people found this helpful.
60

do key fobs have to be reprogramed with pcm change ???

3 of 3 people found this helpful.
60

what could prevent this pcm from transmitting signals ???

2 of 2 people found this helpful.
109,455

I believe that on that year the module is separate and located in the trunk under the rear package shelf. As long as the security light turns off you should be fine.

1 of 1 people found this helpful.
109,455

Bad power supply or bad ground pathways, could even be the ECM itself. Live Data will be able to see that.

1 of 1 people found this helpful.

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