Question about 1998 Mercury Tracer

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Problem with idle

I have checked for vacuum leaks just replaced alternator the voltage regulator was bad has new head and all new gaskets new plug coil is good no engine light or bad codes

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Camshaft or crankshaft sensor

Posted on Apr 29, 2013

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Posted on Jan 02, 2017

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emissionwiz
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SOURCE: engine light on 2003 Grand Marquis code p 2197 "lean"

the very 1st thing u do is have the trouble code checked that turned on the light, there are well over 200 possible reasons for a check engine light, a fuel filter is not one of them.

Posted on May 26, 2009

  • 105 Answers

SOURCE: engine light on, idles rough. had engine light diagnosis.replaced

See if you can get the codes. If it is still number 4 only (probably a P0304) it could be the fuel flow through injector 4. Try some Techron cleaner and make sure number 4 plug isn't fouled. Also get the compression checked on number 4.

If not, it could be the ignition control module assuming all other changes have been made. If you get a code it will help. A P0300 would point toward the ICM. If it is number 4 only it could still be the ICM. Expect around $150 for the module if you do it yourself. The ICM may be under the coil pack. If you are getting a P1361 and/or P1362 it could be the Cam position sensor. They are around $40 and are usually near the number one cylinder. Mine is hiding under the water pump pulley. It is a Buick with the 3.8 engine but the principal is the same.

Posted on Mar 14, 2010

  • 1 Answer

SOURCE: Got a 2000 Cougar that has a charging problem, new

THE SAME THING HAPPENED TO MINE. AFTER $400 I REALIZED IT WAS THE FUSE WHICH IS CONNECTED TO THE ALTERNATOR. IT WAS BROKEN AND WOULD COME LOOSE AT ANY SLIGHT BUMP, THEN IMMEDIATELY KILL THE BATTERY. FIRST THE RADIO WENT OUT THEN THE DASH LIGHTS. ANYWAY I GOT A NEW ONE FOR $40 AND PROBLEM SOLVED. =]

Posted on Jun 16, 2010

  • 1 Answer

SOURCE: 2007 Mercury Milan problem on ignition coil #2.

i'm having the same problem.
have you figured out he problem yet ?
any help would appreciate.
thanks, gemnipaul1973@gmail.com

Posted on Nov 27, 2011

  • 2 Answers

SOURCE: appears to be a vacuum leak but can't locate.

check the back of motor my 01 sable was doing the same thing

Posted on Feb 12, 2012

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2 Answers

How can i find a vacuum leak on my 1999 ford expedition 4.6


> idles up and down when sitting idle and the head lights and interior lights dim in and out

Probably not a vacuum leak; this can be caused by an AC (also on 'defrost') cycling and with changing engine loading, it is normal for some variation in engine speed although a defective 'idle air control' will allow a fair change in RPM.

The visible exhaust is likely purging the system from moisture (condensation) and not a sign of trouble.

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Why is my truck idling and running so ruff? But when I un plug the MAF it runs fine


Vacuum leaks. Check hoses. Also check the intake manifold at the gasket. To check the intake (have the MAF plugged in) Spray some wd40 around the intake at the gasket seal. If the engine starts running fine at some point. Replace the intake manifold gasket.

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94 ford f150 4.9l 6 cylinder runs rich and rough


Check the intake for vacuum leaks, use a can of carb spray and spray all over the gasket area where manifold mates to the cylinder head. If you hit a leak the engine will sound different. Also touch the EGR valve with wet fingers, it should be cool when idling, if it sizzles the water it is leaking and this causes a rough idle.

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My 1994 villager starts, idles and revs fine After about thirty seconds a white galoline ladent vapor starts pouring from the tail pipe. It gets worse the longer it runs. Compression is good, the vacuum...


Bad head gasket & the white smoke is coolant

The O2 Sensor see the coolant or water vapor
& then PCM adds fuel

So you got coolant & too much fuel out tailpipe

Do a Combustion Leak Test where you put a plastic
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check egr valve for vacuum leak. pull hose from manifold. put hose in your mouth like a straw and **** on it. if the valve moves, then it's good. if it doesn't, you need a new egr valve. WARNING, they are fricking expensive! auto zone price $204. NO JOKE

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Checked Fuel Pressure Regulator on 93 Ford Tempo GL 2.3 Liter.


As far as I know without checking it personally it sounds like it could be one of three things (in order from easiest to hardest). Clogged air filter, worn timing chain, leaking head gasket. To check for the third go to Auto Zone and get them to do a compression check, its free. I can't remember off hand but if the 93 has a TPS (throttle position sensor) that could also cause an irratic idle.

Mar 18, 2009 | 1993 Ford Tempo

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Replace head gastket


try removing the vacuum hose from the fuel pressure regulator turn the key on and if it leaks the regulator is bad

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My son car dies every once in awhile and we have put a new fuel pump in it and a filter and change plugs.what else could it be


The emissions controls unit, the voltage regulator, vacuum lines, head gasket, his habit of driving into solid objects or lack of analytical inclination?

Aug 16, 2008 | 1985 Buick Skylark

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