Cold weather high idle

[BigRed97]

Does anyone else's truck go instantly into high idle on a cold start(say under 35*)???

And I mean INSTANTLY like as soon as it fires on during cranking

Also it doesn't come down until it gets shifted out of park

Is this normal or could it be in the tunning

 

[ckrueg]

Mine did this stock as well as now with weight loss programing.

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[sootie]

Does anyone else's truck go instantly into high idle on a cold start(say under 35*)???

And I mean INSTANTLY like as soon as it fires on during cranking

Also it doesn't come down until it gets shifted out of park

Is this normal or could it be in the tunning

Its normal.

 

[BigRed97]

Ok thanks, couldn't remember if it did it before the for.

Seems like it's not even enough time for oil to get up top

 

[powerstrokelyfe]

Does anyone else's truck go instantly into high idle on a cold start(say under 35*)???

And I mean INSTANTLY like as soon as it fires on during cranking

Also it doesn't come down until it gets shifted out of park

Is this normal or could it be in the tunning

Same thing.

 

[tom.boswell.79]

13 deg yesterday morning. Mine went to high idle as soon as it stopped coughing.


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[08Monster]

It sounds much worse at -20 when it goes instantly to 1200rpm.

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[04cr450]

Wonder why ford has the programming to do this? Cold oil, instant high idle- cant be good for the internal lubrication.

 

[sootie]

Not much of a difference between 650 rpm and 1100. I bet they raise it up to minimize fuel leak down in the cylinders when it's that cold

 

[04cr450]

Interesting . Is this to prevent a possible misfire then?

 

[sootie]

Interesting . Is this to prevent a possible misfire then?

Its to limit fuel dilution.