Truck runs better with Gasser MAP Sensor??? - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 5 (permalink) Old 10-10-2012, 10:48 PM Thread Starter
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Truck runs better with Gasser MAP Sensor???

A few days ago i bought a MAP sensor from O'Reillys and the guy told me he had one from Borg Warner. I bought the sensor for 50 bucks and installed it in the parking lot. Drove off and the truck felt alive!! I went home and replied to another thread about this and they said i was sold a MAP sensor for a Gas engine. I exchanged the sensor for one made for the powerstroke and the truck ran okay...but not as lively as the gasser one. What gives???

1997 XLT F350 4x4 CCLB - AFE Big Boost, MBRP 4in Turbo Back w/ 6 inch tip, TS 6 position chip.
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post #2 of 5 (permalink) Old 10-11-2012, 04:31 AM
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Re: Truck runs better with Gasser MAP Sensor???

My shop manual reads "The manifold absolute pressure sensor (MAP sensor) (9F479) is used on some applications. The MAP sensor measures the pressure in the intake manifold (9424) and provides this information as a variable frequency signal to the powertrain control module (PCM) (12A650). With the ignition switch in the KEY ON/ENGINE OFF position, the manifold absolute pressure sensor will indicate the barometric pressure in the intake manifold. The MAP sensor is used to indicate boost pressure on the diesel engine."

So I'm thinking that the gasser sensor isn't designed to read positive pressure like the diesel one is?

Newest project: 1995 F350 CC/DRW 2WD E4OD. 3" DP, 4" Diamond Eye system. But I'm still fixin' the broken stuff......
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post #3 of 5 (permalink) Old 10-14-2012, 02:14 AM Thread Starter
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Re: Truck runs better with Gasser MAP Sensor???

A friend of mine thought maybe since the sensor wasnt reading pressure it automatically defaulted to make the engine run at full rich.

1997 XLT F350 4x4 CCLB - AFE Big Boost, MBRP 4in Turbo Back w/ 6 inch tip, TS 6 position chip.
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post #4 of 5 (permalink) Old 10-14-2012, 03:27 AM
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Re: Truck runs better with Gasser MAP Sensor???

Quote:
Originally Posted by TXStroker97 View Post
A friend of mine thought maybe since the sensor wasnt reading pressure it automatically defaulted to make the engine run at full rich.
was teh truck smoking more. I would assume full rich would cause you to smoke way more in low boost conditions.

1996 F-250 PSD 4x4 5 sp. 4" TBE, bhaf, beans diesel 6 position chip. Needs injectors and an innercooler so bad. Low end TQ SUCKS! Even with 4:10s
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post #5 of 5 (permalink) Old 10-14-2012, 05:01 PM Thread Starter
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Re: Truck runs better with Gasser MAP Sensor???

Yeah gettin on the throttle there was a nice haze behind me lol.

1997 XLT F350 4x4 CCLB - AFE Big Boost, MBRP 4in Turbo Back w/ 6 inch tip, TS 6 position chip.
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