Question about 1991 Lincoln Town Car

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Lincoln ls 2002

Engine is shaking after 2500 rpm as not enough fuel is coming or spark problem.

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Somebody said that jet pump is not working, but still icould not learn how i will solved.

Posted on Oct 13, 2008


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Why do the rpms stop between 2500-5000 on a 2002 Lincoln LS

There are a few reasons to limit RPM which can be a "Limp home" mode activating. But most show a code of some sort with a dash light. Another area is the automatic braking for the "Traction control" which in some models can also have a control to throttle the engine down to prevent wheel slippage.

Blocked catalytic converters can limit RPM by choking the exhaust flow. You have crankshaft and camshaft sensors which count the RPM and send signals to the brain and the fuelpump. Your crankshaft sensor regulates the fuel pressure and if it miscounts, the engine can be fuel starved.

Not all scanners are the same. One that reports fuel pressure while simultaneously reporting RPM would be something to know for fuel starvation.

You can kind of eliminate some possibilities by whether "Check engine" or "Traction control" warnings are on.

Feb 04, 2015 | 2002 Lincoln LS

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I have a 2002 Lincoln LS that up to 3000 rpm seems to run fine. at 3000, it starts to shudder and miss. any ideas/

Yea , take it to a qualified repair shop that has a scan tool that can show misfire data . That's the best way . What engine ? 3.0 L or 3.9 L . Both have COP - coil on plug ignition system . I have replaced a bunch of these coil's an spark plugs . The spark plug get so worn the spark can't jump the gap an fries the coil and if it goes like that long enough it will short out the driver (transistor) in the PCM engine computer . The last one i worked on cost the owner over 2 grand. New computer , programming , new coils , plugs , plus my labor .

Ford Coil On Plug Misfire Quick Diagnosis Methods

Aug 04, 2017 | 2002 Lincoln LS

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I have a 2002 Lincoln LS that up to 3000 rpm seems to run fine. at 3000, it starts to shudder and miss. any ideas/

If one of the engine components is acting up, you should get a check engine light and have codes for the components. If the light is not coming on, it could be a suspension or mechanical problem.
Low fuel pressure could also do it.

Jan 23, 2014 | 2002 Lincoln LS

1 Answer

2002 lincoln ls wont start . no fuel going to engine . fuel pump is good cause i tested it . checked all relays and fuses and diodes in fuse boxes and all are good . reset the fuel cut off left of the...

How did you test the fuel pump?
Which one Distribution Pump or Transfer Pump?
Do you have fuel presuure at the rail?
Do you have a crank signal or spark?


Nov 29, 2010 | 2002 Lincoln LS

1 Answer

2003 lincoln ls sometimes shakes when giving it enough gas to pass a car quickly and also check engine light flashes and goes off after 30 secinds and car stops shaking. Please help.

Misfire from one or more of your cylinders, Have the code scanned. Most likely going to need coil(s) and spark plugs to fix the problem.

Feb 25, 2010 | 2003 Lincoln LS

1 Answer

Shaking check engine light flashing

There is a misfire severe enough to cause possible catalytic converter damage, that is making the engine light flash and the engine shake.

Feb 13, 2010 | 2002 Lincoln LS

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My 2001 lincoln ls is sputtering at 40-50 mph,engine light comes on for couple hours

this sounds like an engine misfire, the check engine light is telling you it is misfiring. next time the light is on you should go to an auto parts store as most of them will pull the code for you at no charge. I own a 2002 LS and I have replaced 4 coils in less than one year to correct this same problem.

Jul 18, 2009 | 2002 Lincoln LS

1 Answer

2002 lincoln ls idling shaking when put in drive.

Hey i just had this same sounding symptoms with my 2000 ls. It turns out that the ignition coils were failing (2,6,8). Just replace all of them. All of them i got on eBay for 150 bucks when the garage quoted me 1100 bucks. Good luck man.

Apr 09, 2009 | 2002 Lincoln LS

4 Answers

2002 lincoln ls engine light

These cars are famous for leaky seals where the valve cover interfaces with the cylinder head, at the spark plug journals. They fill with oil, short the coils and cause a misfire. Driving it any significant distance can destroy your catalytic converters ad unburnt fuel ignites therein, creating inferno-like conditions and a fire hazard too. You'll get a "300 code", such as 301 if cylinder 1 is misfiring, 302 for # 2, etc. Pull the coil off the spark plug for that cylinder and if it is moist at all, that's your issue. Have new seals put in, or you'll just keep blowing coils at $50 a whack.

Jan 21, 2009 | 2002 Lincoln LS

1 Answer

2002 ls v6 cyl 3 5 6 mifire help

the missfire can be caused faulty leads and spark plugs replace spark plugs and leads reset codes by removing engine fuse for 10 sec road test and check codes if the lean on bank 2 comes back you may have a faulty injector or intake manifold leak try some injector cleaner in the fuel overdose it it wont hurt

Dec 30, 2008 | 2002 Lincoln LS

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