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RPM Drops below 500 when down shifting

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Old 08-22-2015, 11:39 AM
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Default RPM Drops below 500 when down shifting

I looked and couldn't find this on here. (I'm sure it is)

1994 F150 302 5 speed trans.

here's the issue. When I downshift (say when coming to a stop) the rpm drops below the idle spot (sometimes dropping low enough to almost stall (200-300 rpm) then it recovers back up and idles good.

From what I can see, people are saying the TPS or MAP sensor....

Any ideas??
Old 08-22-2015, 12:18 PM
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Clean your MAP sensor and the throttle body.
Old 08-22-2015, 02:48 PM
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Ok, I'll give that a try. Appreciate it!



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