97 Powerstroke questions
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Junior User
Joined: Jun 2014
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From: Colorado springs
97 Powerstroke questions
Hey guys, I just traded my bronco for a 97 f250psd. So I have some questions, as I have no experience with these trucks. When I go to hit the throttle, there is a "dead zone" for about an inch or so before the engine responds. If you let off the throttle in any gear, it wont hold speed and decelerate smoothly like it should, and if you try to go low speed/rpm in that "dead zone" it lurches, but it idles along fine. It just doesnt like going slow, which makes going down my driveway a bear 
. Does anyone know what that could be? Throttle position sensor or something?
. Does anyone know what that could be? Throttle position sensor or something?
Hotshot
Joined: Dec 2012
Posts: 11,271
Likes: 1,654
From: Las Cruces New Mexico
Hey guys, I just traded my bronco for a 97 f250psd. So I have some questions, as I have no experience with these trucks. When I go to hit the throttle, there is a "dead zone" for about an inch or so before the engine responds. If you let off the throttle in any gear, it wont hold speed and decelerate smoothly like it should, and if you try to go low speed/rpm in that "dead zone" it lurches, but it idles along fine. It just doesnt like going slow, which makes going down my driveway a bear . Does anyone know what that could be? Throttle position sensor or something?
. Does anyone know what that could be? Throttle position sensor or something?Welcome to the OBS brethren
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
More likely it's the idle switch. Also on the pedal. If it's not adjusted right, the engine doesn't rise off idle until you've put a fair amount of movement into the pedal. The PCM then responds to that pedal position rather abruptly. The key is to adjust the idle switch so it closes with the least amount of pedal movement possible. There's a bit of wiggle room with the mounting holes, but some folks just bend the tab that engages the switch. Don't overadjust, or the switch will always be closed, and the PCM will never detect the "open-to-closed" sequence and will never take the engine off idle.
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 103
From: Ashland City, TN
All these trucks come with a small dead zone at the start of the throttle.
That's why there is a "hot foot mod"
TJBeggs has a post on it someplace.
It's basically to give the idle sensor time to disengage before the TPS sends fuel signals.
That's why there is a "hot foot mod"
TJBeggs has a post on it someplace.
It's basically to give the idle sensor time to disengage before the TPS sends fuel signals.
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1999 - 2003 7.3L Power Stroke Diesel
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Jan 16, 2005 07:47 PM
