Cold Idle and Temp Gauge
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Cold Idle and Temp Gauge
01 f-250 5.4
Here is my problem the truck starts cold but but dosn't idle well for the first minute dosn't seem to want o stay on fast idle, but then runs fine when it warms up Temp gauge is normal,if i shut it off while warm and restart it 90% of the time the temp gauge will pin hot and warning light will go on for 10-30 seconds. Then temp shoots back to normal and warning light goes out and truck runs fine.Only one time has it stayed pinned hot for about 5 min and the truck ran terrable (limp mode I think) shut it off and restared it and ran fine and temp gauge normal.I did change all coils and plugs yesturday (saw a service bulliten that said a coil starting to go out can mess with the computer ans cause this) but still the same problem. Changed Thermostat and coolent temp sensor.Still ame problem.
Here is my problem the truck starts cold but but dosn't idle well for the first minute dosn't seem to want o stay on fast idle, but then runs fine when it warms up Temp gauge is normal,if i shut it off while warm and restart it 90% of the time the temp gauge will pin hot and warning light will go on for 10-30 seconds. Then temp shoots back to normal and warning light goes out and truck runs fine.Only one time has it stayed pinned hot for about 5 min and the truck ran terrable (limp mode I think) shut it off and restared it and ran fine and temp gauge normal.I did change all coils and plugs yesturday (saw a service bulliten that said a coil starting to go out can mess with the computer ans cause this) but still the same problem. Changed Thermostat and coolent temp sensor.Still ame problem.
Fleet Owner
Joined: Aug 2010
Posts: 21,253
Likes: 1,656
From: Reynoldsburg, Ohio
Instead of guessing at which parts need replacing maybe invest in a code reader/scanner and let it tell you what the PCM sees? You can also find a local Advanced Auto Parts or perhaps AutoZone and they'll pull your codes out free, hoping you'll buy parts from them.
Mostly likely this is something simple but without knowing exactly what you could spend a lot chasing a problem with the same lack of results.
I've invested in one of the Accutron scanners, found the one I wanted at Tooltopia.com for quite a bit less than anywhere else.
With these computer controlled vehicles a scanner is an almost necessary item for us driveway DIY's!
Mostly likely this is something simple but without knowing exactly what you could spend a lot chasing a problem with the same lack of results.
I've invested in one of the Accutron scanners, found the one I wanted at Tooltopia.com for quite a bit less than anywhere else.
With these computer controlled vehicles a scanner is an almost necessary item for us driveway DIY's!
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97flairside
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Feb 11, 2005 07:11 AM
