Question about 1999 Mercury Sable

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Service light has come on. Engine idles at 3000 RPM at one time then at 500 RPM at another. When at 500 RPM sounds like it is missing and sometimes stalls.

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Idle control sensor on thr trottlebody or if eequipped; airflow meter ...off the top of my head, hope it helps.

Posted on Jun 20, 2009

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2001 Olds Alero 2.4 idles rough misses acasionally then under torque at 3000 it misses and Trac off light comes on and service engine light flashes


Go to an auto parts store and have them scan for a code. That should give you an indication of what is wrong with it.

Feb 06, 2015 | Cars & Trucks

1 Answer

I have a 95 mustang v6 that I got as a project. It had blown was gasket and ran rough at idle with lack of power. I redid heads and gaskets etc it runs great and has good power but still idles rough at...


Idling is too slow at 500 rpm.......think about at least 650 rpm to charge the battery and keep up inertia for better take-off power.
Find out how to increase rpm,whether it's a screw-stop adjustment or a timing problem. don-ohio (:^)

Jun 12, 2013 | Cars & Trucks

1 Answer

I have a timing problem. Low idle speed that is intermitten and causes a stumble at starts. This problem also occurres during normal running RPM's. Missing electronic signal but intermitten?


Could be bad sensor whether crank sensor, sam sensor, idle air control sensor, bad ignition module, bad coil or even timing belt. if you have a service engine soon light/creck engine light it's more than likely a sensor. If no light, probably timing belt/fuel filter plugged/ or weak fuel pump.

Jan 17, 2013 | 1995 Toyota Camry

1 Answer

97 bravada engine missing


check the intake gasket or mass airflow

Apr 19, 2012 | 1997 Oldsmobile Bravada

1 Answer

1999 dodge intrepid idles at 3000 rpm


Check your I A C motor (idle air control motor) Check all your hoses and tubes leading to and from. Check the throttle linkage itself to make sure nothing is obstructing it from returning to normal rpm,

Apr 01, 2012 | 1999 Dodge Intrepid

1 Answer

Revs upto 4000 rpm in idle and while driving too ! all by itslef.


mcdevito75 here, Sounds like the idle speed motor or the idle speed sensor is no good. Your local shop can check this out for you.

Jun 17, 2010 | Hyundai Motor 2002 Sonata

1 Answer

2000 chevrolet z71 5.3 litre. when i start the truck it idles a little high about 1400 rpm and it stays there for a second then idles to about 500 rpm and it starts to shake perhaps the motor missing but...


Try cleaning the throttle body plates with throttle body cleaner.Also check for vacuum leaks around the intake gaskets.You can also check for codes.Sometimes you can have codes and not get a check engine light.Hope this helps.Good luck.

Feb 24, 2010 | 2000 Chevrolet Silverado

1 Answer

How do i set the timming on 94 mercury villager van


you only set base timing to 15 degrees BTDC (before top dead center).

Ignition Timing
  1. s1v~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Parking brake control should be applied.
    Depress the parking brake pedal, and warm the engine to the normal operating temperature.
  1. Turn off all electrical loads.
  1. Rev the engine to 2000-3000 rpm two or three times and allow the engine to return to the idle.
  1. Turn off the engine and disconnect the throttle position sensor electrical connector. (not really necessary)
  1. Start the engine and rev it to 2000-3000 rpm two or three times and allow the engine to return to the idle.
  1. Check the idle speed. The idle speed should be between 700-800 rpm in PARK (P) or NEUTRAL (N) position.
  1. NOTE: Make sure that the timing pointer is pointing to the 15° Before Top Dead Center (BTDC) mark on the crankshaft pulley. Each notch on the crankshaft pulley represents 5 degrees.
    Check the ignition timing with a timing light.
632206b.gif go here for villager help

http://autos.groups.yahoo.com/group/villagerquest/

Jun 09, 2009 | 2001 Mercury Villager

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