Mechanics

REF SIGNAL FOR CMP SENSOR ON 5 LITER MOUNTAINEER

Ford Other

I have a 1999 mountaineer with 100k on it. There should be a 5 volt ref at thte gray/red wire at the cmp sensor which comes out of pin 85 on the pcm. I have nothing there and was wondering if it is common for a wire break under the plenum or somewhere in the harness back to the pcm. Obd2 code triggered is p0340

I'm making a donation but I'd rather pay 50 bucks for the guy who finds my problem!
jay fortini
Avatar
Tireking
January 8, 2007.




LOL jay.$50!
Its very possible for a wire to chafe or break. And bear in mind also that the 5 volt signal is provided by the pcm so. Hate to say it, have seen a few fail internally. Lets hope its just the wire! Let us know!

Chris

Tiny
Carundell
Jan 9, 2007.
Do you have a two pin connector or three pin?
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Tiny
TaurusWheel
Jan 9, 2007.

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