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Maf Sensor Question

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Old 01-24-2010, 01:52 PM
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Originally Posted by dhenke
Well I think im gonna go and pick up a new sensor today and put it on. My question is, is a lot of times when my vehicle bucks or shakes or whatever, my battery light flashes? How would the evp sensor have anything to do with that? Or what would cause that to do that.
Well, quit thinking about buying parts and do an error code scan. If the engine falters while the BAT light flickers, it implies a poor connection somewhere or the alternator diodes are failing. Idle faltering at idle when EVP sensor unpluged dosn't particularly mean anything w/o a code. Maybe the EGR is hanging from contamination buildup or EGR valve diaphram leak in reference to your driveability issues. See what happens when you disconnect the wires to the MAP Sensor!!! Anything you do should be w/ engine at normal operating temp. to have much merit.

Last edited by ymeski56; 01-24-2010 at 09:23 PM.
Old 01-24-2010, 01:56 PM
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Where can I find the Map sensor?
Old 01-24-2010, 09:20 PM
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Originally Posted by dhenke
Where can I find the Map sensor?
Mine's hanging on the back firewall, on the passenger side, to the right of the A/C evaporative core housing. Engine at norm. op. temp. Remove the wire connection, not the Vac hose. If no change in Idle/ drivability behavior, it implies that it's pooched. An error code scan takes a lot of the guessing out of it. The MAP looks like this: http://fordfuelinjection.com/?p=27

Last edited by ymeski56; 01-24-2010 at 09:26 PM.



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