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Old 01-09-2016, 02:36 PM
Titan2087 Titan2087 is offline
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Join Date: Jan 2016
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Default 3.0 cold engine rpms will hang when foot removed from throttle

Hello my 2001 with a 3.0 automatic 138k miles recently has developed a problem on cold starts where when throttle is applied and the rpms increase they stay there any slowely come back down after throttle had been released. For example if I turn truck on and drive it on a cold start and I bring it up to 1600rpm and I remove my foot from the throttle the truck will continue driving at 1600rpm and the rpms will slowely come
Down including when I applie the brake. After engine is warmed up problem completely goes away. Started having this problem
A couple days after doing a seafoam treatment threw the motor smoked like a champion. So what are your thoughts? TPS sensor, IAC or something else? Thank you for any input
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Old 01-09-2016, 06:00 PM
Jason35 Jason35 is offline
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Join Date: Aug 2013
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Default Re: 3.0 cold engine rpms will hang when foot removed from throttle

Well this isn't much help but I thought that was normal, when its below freezing out my trucks rpm will always hang if I give it gas while warming up, have a manual so it doesn't affect driving but I can see an issue with an auto, my thoughts are ignore it unless it affect driveability, but I wouldn't know what the issue could be
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1994 Ford Ranger Splash. 4.0L, 4x4, 5 speed.Tracked MPG's - Totalled

1995 Ford Ranger XLT extended cab. 4.0L, 4x4, 5 speed. 2" suspension lift, 3" body lift. 33x12.50r15 bfg rubber on american racing wheels. Tracked MPG's
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Old 01-09-2016, 07:05 PM
Bob C. of Indiana Bob C. of Indiana is offline
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Default Re: 3.0 cold engine rpms will hang when foot removed from throttle

There made to idle up until the truck warms up.They say to preserve your engine, to not drive it until the idle drops from a cold start.
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