H3 Manual Transmission Stuck Throttle

[cbetts]

I have a strange symptom of a stuck throttle. When coming to stops, I put my trans in neutral and the engine revs up to about 2000 RPM until I am at a complete stop. Sometimes, the revving will increase but always drops to normal once I am completely stopped. My ScanGauge shows the TPS sensor rises and falls with the RPM regardless of the gas pedal position.

These symptoms happened after I pulled the MAF and throttle body for a good cleaning. I am assuming there is a relearning process the computer needs to go through. Any ideas?

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[hummech]

hello cbetts, there is a throttle position relearn in the funtional test portion of the tech2 that we use when we clean all the newer vehicle throttle body services.

mike s.

 

[cbetts]

Is this something I can do at home or do I need to bring it in for service?

 

[Chook]

If you disconnect the battery negative then it should reset everything (so it will go into relearn mode on everything also)

 

[cbetts]

I pulled the cable and will check it out tomorrow. Thanks for the suggestion. I am an IT guy and should recognize the fact that sometimes a reboot will fix it all.

 

[cbetts]

AH! Now I know what you mean by Tech 2 . . .
[video=youtube;Xshr9V9vXJY]http://www.youtube.com/watch?v=Xshr9V9vXJY[/video]

 

[cbetts]

All fixed! Hooked up the battery this morning and all is back to normal. I did notice a little improvement over what it was like before the TB cleaning.

 

[ReconH3]

Just an idea. Maybe you could disconnect the battery before unplugging everything and starting cleaning. Then reassemble everything. Finally reconnecting the battery. Thanks for running into this problem. It helps other for of they run into something similar.




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