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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old 11-08-2009, 06:29 PM
bcgdragon bcgdragon is offline
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94 f150 5.0 MAF and MAP sensors

Quick question. Searched but didn't find the answer.

I have a 94 F150 5.0. If it has a MAF does it not have a MAP? Trying to solve my rough idle/stalling problem.
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Old 11-08-2009, 08:10 PM
brett12396f150 brett12396f150 is offline
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Im 90% sure they are basically the same thing, you only have one. MAF=mass air flow MAP=manifold something pressure? believe they work the same though.
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Old 11-08-2009, 08:57 PM
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Well no.. they don't work the same but Brett is right a truck will only have one or the other. Are there any codes present?
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Old 11-09-2009, 07:45 AM
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MAP: Manifold Absolute Pressure
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Old 11-09-2009, 02:48 PM
brett12396f150 brett12396f150 is offline
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@ conan--They do the same job basically right?
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Old 11-09-2009, 04:48 PM
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Originally Posted by brett12396f150 View Post
@ conan--They do the same job basically right?
Well.. lets just say they're related. The MAP sensor measures manifold vacuum and that's the only input an SD computer has to indicate engine load. The MAF sensor measures incoming air mass and the computer calculates load using that input but it also uses the measured air mass directly for other things.
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1990 5.0HO AOD XLT X-Cab F150 3.55LS, 1994 3.0L 5-sp x-cab Ranger 3.45, 2004 3.0L 5-sp X-cab Ranger Edge 4.10, 2004 2.5L 5-spd Subaru Legacy
1996 Kawasaki ZX11D, 2004 Honda 599, 2008 Kawasaki KLR650
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Old 11-09-2009, 04:48 PM
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