Dodge Dakota throttle position sensor

27 messages, Last post on Feb 22, 2009 at 7:26 PM

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#26 of 27 Re: idle problems [dustyk] by keevine Feb 17, 2009 (2:49 pm)
Replying to: dustyk (Feb 15, 2009 9:55 am) Thank you for responding.I will start looking for problems.After reading your response you mentioned switching the heater to the defrost mode,well thats the only place it will work.Does that tell you anything different?Its not a big deal if it doesn't as long as it defrots my window.Oh I forgot to tell you,from the time I made the last response it stoped idiling AGIAN! Thank you again for all the help keevine Replies to this message: dustyk (Feb 22, 2009 7:26 pm)
#27 of 27 Re: idle problems [keevine] by dustyk Feb 22, 2009 (7:26 pm)
Replying to: keevine (Feb 17, 2009 2:49 pm) Sorry for the late response. When the heater control is placed into a defrost mode, a signal is sent to the PCM which causes the Idle Speed Motor to advance slightly. This is to compensate for an idle speed drop caused by the increased load of the air compressor. If it idles fine in the defrost mode, you either have a defective Idle Speed Motor, or a PCM problem. It's possible the PCM might need a reset, although I think its more doubtful in this case. By connecting a DRB3 scan tool to this truck, a Dodge tech. can get a better idea of what's going on. Regards, Dusty

#26 of 27: Re: idle problems [dustyk] by keevine; Feb 17, 2009 (2:49 pm)

Replying to: dustyk (Feb 15, 2009 9:55 am)

Thank you for responding.I will start looking for problems.After reading your response you mentioned switching the heater to the defrost mode,well thats the only place it will work.Does that tell you anything different?Its not a big deal if it doesn't as long as it defrots my window.Oh I forgot to tell you,from the time I made the last response it stoped idiling AGIAN! Thank you again for all the help keevine

dustyk (Feb 22, 2009 7:26 pm)

#27 of 27: Re: idle problems [keevine] by dustyk; Feb 22, 2009 (7:26 pm)

Replying to: keevine (Feb 17, 2009 2:49 pm)

Sorry for the late response.

When the heater control is placed into a defrost mode, a signal is sent to the PCM which causes the Idle Speed Motor to advance slightly. This is to compensate for an idle speed drop caused by the increased load of the air compressor.

If it idles fine in the defrost mode, you either have a defective Idle Speed Motor, or a PCM problem. It's possible the PCM might need a reset, although I think its more doubtful in this case.

By connecting a DRB3 scan tool to this truck, a Dodge tech. can get a better idea of what's going on.

Regards,
Dusty