Question about 1997 Lincoln Town Car

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1997 Lincoln Town Car just stalled as I was slowing down to an idle

My 1997 Lincoln Town Car just stalled out. It started back up immediately but I am still concerned. It has a brand new gas pump that is less than two months old. Currently it has about a half a tank of gas. It was not hot outside and the ac was on low.

Also, it makes a strange sort of groaning noise coming from the engine when it is at idle. It is intermittent, but when it does happen, it happens every 5 to 15 seconds.

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  • Lincoln Master
  • 13,738 Answers

Do you have A/C on when it makes this noise ? Idle air control valve or air passage dirty .
How To Fix Car That Idles Poorly

Ford idle air control valve IAC test stalling problems

Posted on Jul 01, 2017


6 Suggested Answers

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Posted on Jan 02, 2017

  • 6966 Answers

SOURCE: 2004 Lincoln Town Car


As in most electrical problems, it would be required to do a bit of tracing/diagnosis to determine which is at fault. Most automotive horn system works on the same basic design. A switch in the steering wheel that energizes the horn relay that in turn powers the horn(s). A self activating horn could be caused by:
1: intermittent short in the steering wheel horn button;
2. intermittent shorting out horn relay;
3. intermittent short in the wiring.

Basing on the above possibilities, diagnostic/corrective action would involve:
a. tapping on the steering wheel (not the horn button) to see if jarring it would activate the horn, if yes then the problem is with the horn switch and often cleaning the inside/contact points of the switch should be corrective;
b. tapping the horn relay with the handle of a screwdriver to determine if jarring it would activate the horn, if yes then the problem is with the horn relay which of course would need replacement;
c. the wiring would be a bit more complicated if not time consuming. It would be necessary to wiggle the wires coming from the steering wheel/column to the main harness, to the fuse/relay bank finally to the horn to check at which point the trouble would resurface. Taping any exposed/bare/scraped wire would be corrective. It should be noted that the steering horn switch often would be "to ground" meaning the horn switch is switching the horn relay by providing the negative path, the relay is constantly supplied with B+12.

There are some instances that the horn could also activated by an alarm system.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Jul 02, 2008

  • 4 Answers

SOURCE: 96 lincoln town car- loud humming noise

I had experienced the same problem with my 93 TC. I'll try to make it short. Replace the Idle Control Valve. Cost me $50 at AutoZone. It has a electronic plunger that has a rubber o ring on the end of it. It separates two air chambers inside the valve. When the rubber gets old and the plunger is suppose to cut off the air coming in from one chamber to the other, the air gets sucked between the chambers across the old rubber causing the humming noise. That is also why the engines revs up and down and wont idle right. It is located between the firewall and the back of the motor just to the left (drivers side) of the throttle control assembly. When you look up on the internet on how to replace it, it will tell you to remove all the housing surrounding the wiper blade control arms and assembly so that you can access it. If you take your time, just remove some of the hoses and wires connected around it and you can access it without removing all that ****. Only has two screws to it that point up and can be reached with a ratchet and extension. Car runs great now and finally got rid of that noise.

Posted on Dec 02, 2008

  • 77932 Answers


I think you will find the aftermarket Cat Conv. is the source of your problem, but without hooking up to the factory test equipment at my disposal at my Ford dealer this at best and educated guess based on 20 years of emission related work, I am a Ford certified master electronics technician

Posted on Jan 30, 2009

  • 170 Answers

SOURCE: intermittent engine start on 1986 lincoln town car

Replace the TFI module. Google Ford TFI modules and you see the problem they have with these.

Posted on Feb 11, 2009

  • 783 Answers

SOURCE: 2000 Lincoln Navigator Stalling at low RPMS sporadically

Idle Air Control (IAC) motor is sticking.You can try taking it off and cleaning it but most likely will have to replace it.

Posted on Feb 13, 2009

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