obs high idle on startup
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New User
Joined: Jul 2019
Posts: 20
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From: Jones, Oklahoma
obs high idle on startup
91 f-150 custom 302 2wd auto
on startup my truck will idle high for about a minute or 2 then go back down (i don't know how many rpms because my truck didn't come with a tach) does anyone know to solve this issue?
on startup my truck will idle high for about a minute or 2 then go back down (i don't know how many rpms because my truck didn't come with a tach) does anyone know to solve this issue?
Senior User
Joined: Aug 2019
Posts: 150
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Same thing happened to me and I felt the same way. It's nothing to be concerned about, I believe it's for cold starts and to quickly warm up the engine. It would be different if it got really high but slightly higher than usual Is normal.
Mountain Pass
Joined: Dec 2018
Posts: 152
Likes: 7
On top of the start up raised idle, the fan clutch will be engaged until the fluid redistributes making it SOUND like it's screaming when it really isn't.
Part of the "idling down" sound is the fan starting to free wheel.
Part of the "idling down" sound is the fan starting to free wheel.
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