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95 buick regal gransport. Car has ses. Starts and runs butn is rough until it is warmed up. Idles pretty smooth after warm. The problem happens when throttle is used. Engine has no power and sputters, chokes, and misfires. Also, the tensioner goes nuts and bucks around. It didn't throw any codes. I have replaced the plugs and wires, fuel filter, pcv, and egr. If the ecm batt is pulled to reset it will start and idle. Once gas is given the ses comes back and the problem is still there.

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  • 38 Answers

Check you tps sensor sure that's your problem

Posted on Dec 08, 2012

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Posted on Jan 02, 2017

  • 43 Answers

SOURCE: 1993 Ford Explorer idles rough when engine is warm

try changing distributor cap & coil

Posted on Jan 06, 2009

  • 37 Answers

SOURCE: 98 Astro Van,when warm hesitating, stalling

WELL YOU CHANGED ALMOST EVERY THING EXCEPT IGNITION CONTROL MODULE........

Posted on Jun 27, 2009

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SOURCE: 1990 Toyota Pickup

carb or Fuel injected try cleaning either one of these bad distributor cap or rotor or distributor good luck

Posted on Sep 24, 2009

  • 11 Answers

SOURCE: 99 escort SOHC engine. Idles rough at start up.

If you can find the IAC valve(idle air control) on the throttle body-it should be replaced or try to clean..If you put in new plugs and they turn soot black in a short time period, you have other issues-possible internal engine,such as valve train problems, or a partial exhaust blockage, or the fuel your buying is not good...

Posted on Nov 08, 2009

  • 972 Answers

SOURCE: Same issue with the rough idle with a warm engine 4.0 Ranger

i would think a plugged fuel injector on # 6 cylinder could be the problem,or a big vacuum leak at that cylinder
a valve burnt/stuck could be but you dont see much of that anymore
could be coolant leaking into cylinder from leaky haed gasket but you would have to add coolant every so often
i would check #6 cyl. spark plug after driveing around a while if it looks new, ie no deposits on it then an injector would be what i would change next

Posted on Mar 20, 2010

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