Question about 1999 Lincoln Town Car

3 Answers

1999 lincoln town car no start

1999 lincoln town car 4.6L, good spark, good fuel pressure, good B+ to each fuel injector but no ground from pcm at any injector. Main pcm ground seems clean/tight. Does the theft system prohibit injector ground if a fault is present? Can I replace the pcm with a known good unit with the same part number from a salvage vehicle? Any common problems with the town cars? Thanks.

Posted by on

  • 2 more comments 
  • wino_pgh_gmc Feb 06, 2010

    Ok theft is working properly then, thanks. i must have a pcm issue or a ground issue then.

  • wino_pgh_gmc Feb 26, 2010

    I have no ground at ANY injector. I have spark at ALL coils. So since I have spark, I am ruling out timing, cam and crank sensors. The PCM controls injector ground so if there is a theft issue, you are saying that I will have no spark or fuel? both? No fuel pressure? No injector pulse from PCM?

  • wino_pgh_gmc Feb 26, 2010

    im using a noid light. Tried 2 just to be sure.

  • wino_pgh_gmc Feb 26, 2010

    Yeah i've heard that PCM,s rarely go bad so that why I posted this. No codes either. Thanks.



3 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.


    An expert that has over 500 points.

  • Expert
  • 306 Answers

Yes the teft light will stop the vehicle from running. that is the pats system and can cause all sorts of trouble. if the light flashes fast its not reading the key. no start. if it turns on for two seconds and shuts off the it should start

Posted on Feb 06, 2010

Testimonial: "very good thanks fast reply very helpful"

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 20 Answers

In 15 yrs as a master tech I have ever only seen one bad pcm. People always want to jump to that first. That said. If you have spark it is not the theft system making the car not run. If this were the case you would get a no fuel/no spark condition. What about the timing signals, crank, and cam sensors? you can check them with a voltmeter set to AC voltage. The 4.6 is well known for bad individual spark plug coil packs also. Check each cylinder for spark not just one.

Posted on Feb 26, 2010

  • 1 more comment 
  • raven26376
    raven26376 Feb 26, 2010

    You are right about the timing signals and spark. Sorry Brain Fart. How are you measuring ground at the injectors. The injectors fire so fast you need noid lights or an o-scope to see it. You cannot possibly measure it with a voltmeter not even an analog one.

  • raven26376
    raven26376 Feb 26, 2010

    O.k. just had to be sure. I guess I will finally have to go with a pcm problem then, sounds like your diagnosis tree is sound and you have looked at everything. Any codes?

  • tomas0587 May 11, 2010

    i have the same issue any ideas on what can help me turn on my car?
    I have already switched out the lcm and pcm and it still wont turn on?
    the scan just reads error.


  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 1 Answer

Would a bad coolant temp sensorcause a no start problem

Posted on Nov 11, 2012

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

3 Answers

My 2006 Lincoln Navigator wont start but it is getting fuel

but does it crank over robustly
and fuel is last not first.
first is compression good
spark good.
if the PCM see spark fail, it commands FUELING TO END.

Jul 17, 2014 | 2006 Lincoln Navigator

1 Answer

1999 lincon town car no power to fuel injector

Sometimes a crankshaft sensor does not send the signal to fire either the spark or the fuel injectors. If the fuel pump relay is not getting power, the inertia sensor will not have power either. The inertia reset is just magnetic and does not depend on having power to reset.

You can check for current at the Inertia sensor and at the fuel pump relay. You can also have fuel pressure at the test port without the injectors working, which is the easiest test of all,

You need the sequential firing pulse for the injectors. Have you checked the EEC Relay?

Apr 20, 2014 | 1999 Lincoln Town Car

1 Answer

No power fuel injectors

Do the injectors have power and a ground signal from the engine computer ?

Jan 22, 2014 | Chevrolet Malibu Cars & Trucks

1 Answer

2004 ford explorer will not start but turns over

For a no start , cranks over ok. be sure you have fuel pressure at the fuel rail first, before checking the injectors. There should be more that 40 psi at the rail... if not .. you might have a fuel pump problem. Even if you have fuel pressure at the fuel rail... the next thing I would check for,,, is spark !! Make sure you have spark at the spark plugs. The order would be... fuel pressure first and then spark , , then injector pulse. !! Then plugged exhaust.... then bad fuel then engine timing. The injectors have power to them all the time. The PCM controls the ground to the injectors. So you would have to monitor the ground side of the injectors. So checking injectors is kinda complicated. Hope this helps you. Good luck.

Mar 03, 2013 | 2004 Ford Explorer

1 Answer

My 97 lincoln town car will turn over but won't start

You need to do several things

Is the battery in good shape & have over 12.5 volts
Do you have fuel pressure at the motor key on engine off
Do you have spark or injector pulse when cranking

Mar 01, 2013 | 1997 Lincoln Town Car

1 Answer

88 town car no start

Are the plugs getting fuel ? Are they wet ?
Will it try to start if you spray starting fluid into the throttle body ?
Does it sound like it has compression ?
Have you checked spark at all of the plugs ?

Dec 06, 2012 | 1988 Lincoln Town Car

1 Answer

Van started to run rough, then shut off. Will not start. Replaced fuel pump and crankshaft sensor. Tested coil spark - good. Tested plug wire spark - good. What is next?

You need to know if you have fuel pressure at the injectors and if the injectors are opening. I would check for voltage at the injectors and a ground signal from the PCM after checking for fuel pressure.

Jul 19, 2012 | 2001 Dodge Ram 3500 Truck

1 Answer

I have a 2001 Explorer Sport Trak and it don't want to start. We have checked all the sensors (crankshaft, cam trigger, fuel pump pressre is 65). What is the tank fuel pressure sensor voltage reading. ...

The first thing to check would be spark. This can be done by connecting a spark plug tester to a plug wire while the engine is cranking. The tester must be grounded to the engine block for a good electrical connection.. Your fuel pump pressure is OK.
The problem should be electrical so check
1. No voltage to the fuel injectors (blown injector fuse or bad relay)
2. No pulse signal to the injectors from the PCM (no crank or cam sensor input to the PCM, or a bad driver circuit in the PCM, or a wiring harness problem)
3. A shorted fuel injector (robs voltage from the other injectors so none will operate)

Jan 08, 2011 | 2001 Ford Explorer Sport Trac

1 Answer

Will not start. Fuel pressure is 60lbs.


Mar 17, 2010 | 1999 Chevrolet Suburban

Not finding what you are looking for?
1999 Lincoln Town Car Logo

1,103 people viewed this question

Ask a Question

Usually answered in minutes!

Top Lincoln Experts


Level 3 Expert

79077 Answers


Level 3 Expert

5677 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Are you a Lincoln Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides