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UPDATE UPDATE
Yesterday I obtained the following voltage readings. engine off. metered air pressure "T" ed into MAP, PSI read w/ a auxilery boost gauge
3.9 volt at 11.5 psig should be 1.1 volt
4.4 volt at 14.7 psig " " 1.5 V
4.9 volt at 20 psig " " 2.2 V
referance voltage was correct at 5 volts
So the MAP sensor tests BAD.
NEW development....while driving 70 MPH, engine "hickuped" several times (instantanously lost power for a half second, several times). I then read codes an got a P0344 cam position sensor (problem).
Today I had Ford dealer replace the CPS (free under recall) and I installed a new Ford MAP sensor and cleared the codes.
I will test voltage w/ new MAP sensor and road test. After a few days, I'll report back.
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God Bless America!
2000 Ford Excursion 4X4 PSD Limited
1986 Ford F250 4x4 Supercab, long bed , 6.9L/AT
2001 "MagneticRed" Corvette Coupe
1979 Pontiac Y84 "Bandit" Trans Am
1988 Lincoln Mark VII LSC
1996 Chevrolet Impala SS
1983 Chrysler Cordoba
1995 Buick Roadmaster Sedan
Last edited by mikeceli; 06-05-2009 at 01:23 AM.
Reason: add
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