How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Richard Your Own Question

Richard
Richard, ASE Certified Technician
Category: Lincoln
Satisfied Customers: 13778
Experience:  12 years Ford Lincoln/Mercury Jaguar dealership as a technician and shop foreman reparing all makes
Type Your Lincoln Question Here...
Richard is online now
A new question is answered every 9 seconds

1998 Lincoln Towncar sometimes starts sometimes not, no fuel

Customer Question

1998 Lincoln Towncar sometimes starts sometimes not, no fuel replaced fuel pump and fuel pump relay
Submitted: 3 years ago.
Category: Lincoln
Expert:  Richard replied 3 years ago.

Hello and welcome back to justanswer.com

 

I know you stated you have no fuel but since the engine is cranking we need to check for fuel and ignition. There is a fuel rail test port you can hook a gage up to or just depress the center of it to see if there is fuel. Just be careful when doing this as if fuel is present it will be under pressure. You can also try spraying some carb cleaner into the air intake tube and have an assistant start the engine to see if it will run on the spray. Also try holding your foot on t he gas to see if it will run. I also see issues with the PCM/EEC power relay or the crank sensor/ connector all causing intermittent crank no starts. The PCM relay is located in the row of relays next to the fuse box in the engine compartment. Try tapping on it or replace it as they are not expensive. The crank sensor is located next to the pulley behind the a/c compressor. Wiggle that connector as I see issues with the connector pins.

Customer: replied 3 years ago.
no fuel pressure in fuel rail and will run by spraying carb cleaner in air intake. sometimes I can get it to start and it will run for hours until I shut it off again. does the crank sensor have anything to do with the fuel pump starting?
Expert:  Richard replied 3 years ago.
Yes but if you spray starting fluid and it runs then this is usually a fuel delivery problem. You should check the connection to the inertia switch to make sure you have power going to it. You may just have a faulty new fuel pump.
Customer: replied 3 years ago.
no power to pump since car will run for hours when started and will drive fine,fuel pump seems fine
Expert:  Richard replied 3 years ago.
Next time the problem happens we need to check for power to the pump then see if we have fuel pressure to determine the problem.
Customer: replied 3 years ago.
When that happened there was no fuel pressure and no power to the pump
Expert:  Richard replied 3 years ago.
Ok then we need to trace power back to that inertia switch and then from the relay. The relay is supplied power and the PCM will energize the relay. Power is then sent from the relay to the inertia switch and then to the pump.
Customer: replied 3 years ago.
where is the inertia switch located
Expert:  Richard replied 3 years ago.
Sorry for the delay as your question got lost on the site. This switch is located in the trunk.

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on. Rich D USA
< Last | Next >
  • AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on. Rich D USA
  • Because of your expertise, you armed me with enough ammunition to win the battle with the dealer. They are installing a fuel filter and fuel pump at no charge to me. Molly USA
  • I needed help with my car on Saturday morning....got a response in 5 minutes, and it was the perfect solution. Thanks again to your service. Jason V. Kirkland, WA
  • I do know, after going though this with JustAnswer, that I can somewhat trust my mechanic but I will always contact you prior to going there. BR New Jersey
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka- Moose)

    Technician

    Satisfied Customers:

    1322
    16 years experience with Lincoln
< Last | Next >
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka- Moose)'s Avatar

    Chris (aka- Moose)

    Technician

    Satisfied Customers:

    1322
    16 years experience with Lincoln
  • http://ww2.justanswer.com/uploads/FO/fordguy4u/2011-12-17_222940_HPIM1257.64x64.JPG Ronnie's Avatar

    Ronnie

    ASE Certified Technician

    Satisfied Customers:

    1274
    35 years as an automotive tech
  • http://ww2.justanswer.com/uploads/s420/2010-06-17_171713_A1.jpg Shawn's Avatar

    Shawn

    Technician

    Satisfied Customers:

    360
    16 years in the Automotive Industry
  • http://ww2.justanswer.com/uploads/JM/jmcdo28/2012-2-23_01655_resized.64x64.jpg John Mc's Avatar

    John Mc

    Lincoln Technician

    Satisfied Customers:

    207
    19 years Ford Lincoln Mercury experience
  • http://ww2.justanswer.com/uploads/tsmodie/2009-6-10_144056_tim.jpg Tim Mohr's Avatar

    Tim Mohr

    ASE MASTER TECH

    Satisfied Customers:

    145
    30 YEARS EXPERIENCE, FORIEGN AND DOMESTIC, GAS AND DIESEL
  • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

    George H.

    ASE Certified Technician

    Satisfied Customers:

    140
    15+Years of service as a Master Technician
  • http://ww2.justanswer.com/uploads/wmarti7/2009-4-18_04332_Avatar.jpg Chuck's Avatar

    Chuck

    ASE Certified Technician

    Satisfied Customers:

    127
    Ford senior master,ASE Master L1 Certified