Where is my MAP? - Ford Powerstroke Diesel Forum
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post #1 of 15 Old 03-08-2012, 07:03 AM Thread Starter
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Where is my MAP?

And EBP sensors? 95. I have had a problem losing power on grades. Now if my MAP is faulty and i unplug it i should see little to no change in performance correct?
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post #2 of 15 Old 03-08-2012, 07:58 AM
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Unplugging the MAP sensor won't do anything for you on grades. It will give you a little more go off the line, but won't do anything for top end. Disconnecting it causes PCM to use a default value, which is somewhere in the middle of boost range. Higher MAP value will give you more fuel at first. Downside of this is the PCM needs to see boost to increase fuel at high RPM's.
Replacing it might solve your problem. Eliminating it won't.

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Last edited by backwoodsboy; 03-08-2012 at 08:02 AM.
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post #3 of 15 Old 03-08-2012, 08:16 AM Thread Starter
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Yeah I got that, I was thinking that if it was defective that I would not see a change in performance because its already running at that default value....no? So back to the original question....where do i find it on this rig?
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post #4 of 15 Old 03-08-2012, 08:31 AM
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It's possible that disconecting it will give you a performance increase. This means the sensor is bad, and giving PCM a false low.
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post #5 of 15 Old 03-08-2012, 09:56 AM Thread Starter
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It's possible that disconecting it will give you a performance increase. This means the sensor is bad, and giving PCM a false low.
Thanks for the beta..... But wtf is it located lol?????
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post #6 of 15 Old 03-08-2012, 09:57 AM
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He posted a pic



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
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post #7 of 15 Old 03-08-2012, 09:59 AM
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Map sensor is on firewall above passenger side valve cover with a hose going to it

Jack
97 F250 Xlt, built E4od, D60 swap, Baby swamps, tunes by Dp
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post #8 of 15 Old 03-08-2012, 09:59 AM Thread Starter
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Originally Posted by jesilvas View Post
He posted a pic
Yeah ive been trying to edit that post as I just saw it...... Stupid iPhone.........
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post #9 of 15 Old 03-08-2012, 10:02 AM
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Picture is a super duty anyways. close but no cigar

Jack
97 F250 Xlt, built E4od, D60 swap, Baby swamps, tunes by Dp
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post #10 of 15 Old 03-08-2012, 10:38 AM Thread Starter
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Ok so above and to the left of the p side valve cover and to the left of the tranny dip stick? There's a hose running to something from near the valley and there is a wiring harness with 3 wires..... Zat it?
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