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Will not stay running

Tiny
KAYLABLUCK
  • MEMBER
  • 2003 LINCOLN LS
  • 3.9L
  • V8
  • 2WD
  • AUTOMATIC
  • 193,000 MILES
It will start but will not stay running. We have replaced the fuel pump and filter. Ignition coils, throttle body and spark plugs. It is not reading any codes.
Sunday, November 5th, 2017 AT 8:42 AM

16 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Two things come to mind that will cause this problem. The first would be a vacuum leak which will cause the engine to stall at idle.

Here is a guide to help you confirm the problem:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Next would be a stuck EGR valve which will allow the intake of the engine to be mixed with exhaust causing the engine to stall at idle as well.

https://youtu.be/DqUCbbKdWf4

This guide can help also.

https://www.2carpros.com/articles/stall-at-idle

Below are some diagrams of how to remove the EGR valve on your car.

Please run this test and get back to us.

Cheers, Ken
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Monday, November 6th, 2017 AT 1:55 PM
Tiny
DENNISBON
  • MEMBER
  • 15 POSTS
Mass air flow sensor. Use some isopropyl alcohol to clean it. Put it back in and it will run.
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Tuesday, July 9th, 2019 AT 9:03 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Excellent addition to this thread! Please feel free to help out whenever you are on the site :)
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Wednesday, July 10th, 2019 AT 10:25 AM
Tiny
DO1040
  • MEMBER
  • 1 POST
  • 2002 LINCOLN LS
  • V8
  • 2WD
  • AUTOMATIC
  • 111,000 MILES
My car will shut off while idling. Previously it was very random and now it will do it 2 or 3 times within a mile.
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Wednesday, July 10th, 2019 AT 10:28 AM (Merged)
Tiny
DAVE H
  • MECHANIC
  • 13,383 POSTS
Hello. Thanks for the donation. Much appreciated

Start by having the car scanned for fault codes . Check you have good spark and fuel pressure also check for vacuum leaks?. Repost with full fault codes for more assistance
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Wednesday, July 10th, 2019 AT 10:28 AM (Merged)
Tiny
TIZZARD1986
  • MEMBER
  • 1 POST
  • 2001 LINCOLN LS
  • 89,000 MILES
I can drive my car all day with just the heat and radio on, as soon as I turn on any other accessories the check charging system light comes on as well as the check advancetrac light. If I turn off the extra accessories the warning lights go off. The wipers and windows also operate very slowly while the car is running. Certain days I need a boost to start the car and then runs with same problems. What could be wrong?
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Wednesday, July 10th, 2019 AT 10:28 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Have the charging system checked out-could be the alternator
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Wednesday, July 10th, 2019 AT 10:28 AM (Merged)
Tiny
CARADIODOC
  • MECHANIC
  • 33,873 POSTS
Bad diode in the generator. Have it load tested with a tester that measures "ripple". If ripple is high you are likely to also find the most output it will deliver is exactly one third of its rated capacity. That's barely enough to keep up with the fuel pump, ignition system and lights with nothing left over to charge the battery or run other accessories.
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Wednesday, July 10th, 2019 AT 10:28 AM (Merged)
Tiny
RUSTY60101
  • MEMBER
  • 1 POST
  • 2000 LINCOLN LS
  • V8
  • 2WD
  • AUTOMATIC
  • 105,000 MILES
Recently I have had problems starting my car. I started earlier this winter when the temperature began to drop. My first assumption was that it was the battery or alternator, however, I have had the electrical systems tested, and it does not seem like that is the problem. I have not used the car for about a month now, and when I went back to try and start it, it now starts on the first crank, but the engine dies after just a few seconds. After that happens, it will not start at all. I am thinking maybe a clog in the fuel line or fuel filter, basically something with the fuel. Does anyone have any suggestions or has this happened to anyone else?
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Wednesday, July 10th, 2019 AT 10:28 AM (Merged)
Tiny
HELPING YOU
  • MECHANIC
  • 100 POSTS
Get a little starting fluid in intake - a good shot will tell if fuel is problem or not. Yeah, it happens a lot - usually when it does this it'll only start a couple times, though (fuel pressure/pump), if it'll "start and die" all day long I'd suspect electrical or ignition problems, and with "security" and computers - it could be both fuel AND ignition in-operative.
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Wednesday, July 10th, 2019 AT 10:28 AM (Merged)
Tiny
BULLGOALIE27
  • MEMBER
  • 1 POST
  • 2001 LINCOLN LS
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 111,000 MILES
I have a 2001 Lincoln LS. When I am idling, it begins to vibrate a bit and the rpm move a little bit and then sometimes it stalls. Once I'm on the gas, these symptoms disappear. My emission light is on.
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Wednesday, July 10th, 2019 AT 10:28 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Check for vacuum leaks and check the idle air control valve. If the check engine light is on, have the computer scanned to identify trouble codes.
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Wednesday, July 10th, 2019 AT 10:28 AM (Merged)
Tiny
RICKSMITH1022
  • MEMBER
  • 1 POST
  • 2001 LINCOLN LS
I have a 2001 lincoln ls v6 and when I start it it will idle high then lower down but when I go to give it gas once it hits around 40mph it spudders and wont go any higher then if I go to put it in gear the car shuts off. When you look at the exhaust its a thick white smoke and it has a very rich gasoline smell. I plugged it up to my computer and it said piston 3 and 5 are misfiring and the egr valve popped up. I put a new egr valve in the car and nothing happened so I know its one of the sensors but I replaced the one behind the motor and nothing happened and I disconnected the battery to reset the computer but nothing happened so I took the head off the motor and looked inside and there is like an inch thick of carbon build up inside the head I was wondering what sensor is in control of the carbon and if I replace that sensor it would fix the car
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Wednesday, July 10th, 2019 AT 10:28 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Did you remove the head or the valve cover?

There is no sensor for carbon.

What were the codes? Including the egr?

Roy
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Wednesday, July 10th, 2019 AT 10:28 AM (Merged)
Tiny
LETICIA
  • MEMBER
  • 2 POSTS
  • 2002 LINCOLN LS
2002 Lincoln LS

what causes a 2002 Lincoln LS to stall when coming to a stop?
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Wednesday, July 10th, 2019 AT 10:28 AM (Merged)
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
You may have a vacuum leak, get a can of spray gumout, spray the vac lines and maniflod area, when the idle changes, youve found the leak! You want the engine running and spray on the outside but do direct the stream onto the hoses, if it is a vacuum leak, the engine idle will change speed, then you have detected a leak, repair the vacuum leak and see how it runs! If that doesnt do it, you may need a new idle air control valve, it's bolted to the throttlebody
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Wednesday, July 10th, 2019 AT 10:28 AM (Merged)

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