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2000 f150 runs rough when cold but runs good when hot

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Posted on Jan 02, 2017

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SOURCE: 91 oldsmoblie run rough when cold and idle very high when its hot

try the throttle position sensor

Posted on Dec 20, 2008

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SOURCE: 2000 Ford Explorerer rough idle When cold

what codes are present? If it is lean codes P0171/P0174 problem is most likely the orings leaking between upper and lower intake manifold if this is a 4.0L

Posted on Feb 11, 2009

  • 4102 Answers

SOURCE: 2001 Ford F150 5.4 runs fine cold, but loses power when hot

hi, i would get the oxygen sensor looked at first as this only starts working when the exhaust reaches a certain temp.
But as your getting the problems when the engine is up to temp then this is what i would look at first it also called a lambda sensor.
Their is no way of testing this yourself but a garage could run a test and tell you if that part is at fault.

The problem is you just need to iliminate things orderly so i would get the oxygen sensor checked first before you spend money on other parts. If this is at fault then its not expensive to replace and does cause the problem your having

Posted on Aug 23, 2009

  • 144 Answers

SOURCE: Ford 150 runs rough when cold

Hi! Either the elbow at back of intake manifold is leaking or your intake gaskets are leaking. A very common occurance on both items and either one will set a lean code and illuminate the check engine light. Hope this info helps!

Posted on Sep 17, 2009

  • 4 Answers

SOURCE: rough idle when cold and hot

have you replaced coil pack? Check EGR passage through upper mainfold and make sure clean. also make sure EGR valve not stuck part way open. Also check crank and cam sensors along with MAF.

Posted on Oct 19, 2009

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