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1990 buick century idles rough when warm accelerates fine

Idles rough when warms up but accelerates fine but idles rough

Posted by Anonymous on

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5 Related Answers

Anonymous

SOURCE: 1996 Buick Regal

gas pump

Posted on Jul 23, 2008


Anonymous

  • 13 Answers

SOURCE: 1990 buick century limited

Have you tried replacing the pick-up coil?

Posted on Nov 03, 2008

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dennymulford

Dennis Mulford

  • 1055 Answers

SOURCE: 2000 buick century. starts and idles but cannot

fuel filter or fuel pressure regulator or tps sensor

Posted on Apr 19, 2009

Salvador Quintanilla

  • 1608 Answers

SOURCE: stalls when warm , no start when warm

What you need to do is when it stalls out then check to see if your loosing fuel or spark.Check for spark at the spark plugs.don`t just check one.Check all the front 3 a least.If no spark then you probably have a bad ignition module.It is under the coils.Good luck.

Posted on Nov 24, 2009

Anonymous

  • 80 Answers

SOURCE: 91 buick idles up and down after it watms

Check the Throttle Position Sensor and Egr vavle. Look closely at all vaccume lines and check for cracks, breakage and colasping lines.

Posted on Feb 08, 2010

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1 Answer

My 1997 buick century makes rattle noise when in idle after warmed up


Not a mechanic but have heard similar from older cars and been told that the tappets need adjusting.

Oct 29, 2015 | 1997 Buick Century

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1990 1500 runs good when cold but when it warms up rough idle then stalls


Remove the EGR you have carbon,that is keeping the pintle open,if there is no carbon and the pintle is open replace it.

Mar 10, 2012 | 1990 Chevrolet K1500

1 Answer

When warm the car does not idle. when its cold it starts and drives fine. when it warms up it shuts off and idles rough.


Find the egr valve on the intake. Look up on the internet what it looks like because it is difficult to describe. There will be one vacuum hose attached to it. Start the car and let it warm up. when it starts to hesitate remove the hose. If the engine holds idle, you need to replace the egr valve. The egr (EXHAUST GAS RECIRCULATION) valve allows the engine to re burn the exhaust gas when the engine is cold to clean up the emissions at the tail pipe. They tend to get stuck in one position from carbon build up and need replacement.

May 23, 2010 | 2000 Buick Century

1 Answer

93 chevrolet truck bogging down on acceleration


Check intake gaskets. Pour warm soapy water on the gasket when it's running. If it bubbles like crazy, you have a leak. 2. Check timing. Shoot a timing light at the crank mark. If it jumps around a lot, your chain has jumped. #3. check cam. Remove valve covers, run the engine, and see if they are all raisng the valves the same. Put a piece of cardboard along the bottom, and fold it around a little, so it forms kind of a " half valve cover". That way you won't lose oil everywhere, and make a mess, or a fire.

Aug 27, 2009 | 2002 Buick Century

1 Answer

Air conditoning gets warm at idle. 1998 buick


It seems the automatic idling lifter (sensor) once you switch on the a AC system has failed and thus at low idling the Ac compressor clutch gives in stopping the compressor to spin.
You have to check tht system out.
Hope this helps!

Aug 04, 2009 | 1998 Buick LeSabre

1 Answer

Starts fine, Idles fine, Drives Fine for a while


you might want to chk. the crank sensor and or cam sensor. sounds more to me that it could be fuel problem. chk. fuel pressure. pump could be on its way out. don't be fooled by hearing the pump running as they sound like they are pumping but there not, at least not enought pressure to keep it running. pressure should be around 50 p.s.i.

Jan 06, 2009 | 1990 Buick Century

1 Answer

1990 buick century limited


Have you tried replacing the pick-up coil?

Jul 12, 2008 | 1990 Buick Century

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