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Computer keeps throwing maf codes
Black dawg the overdrive light with start blinking and it won’t step shift. Think slam shifting a old ford 4 spd and won’t run faster than 45mph The tps was a issue but a adjustment fixed that- TheMadHatter
- Post #34
- Forum: 6.9L IH & 7.3L IDI Diesels
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Computer keeps throwing maf codes
Wait what (insert record scratch) A map sensor without a vacuum will not work Manifold Absolute Pressure Sensor Now on a diesel since the vacuum is made by a pump not the vacuum of the crankcase the line must be run from the log to a very small line but a maps sensor needs vacuum or the...- TheMadHatter
- Post #33
- Forum: 6.9L IH & 7.3L IDI Diesels
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Computer keeps throwing maf codes
I was debating on posting this or waiting until I put more miles on it ( and I was rushing and didn’t take pictures yet) but as of 12 hours ago the code is cleared and has not returned I wired in a gm three wire map sensor and it so far likes it I’ll try to get the part numbers and specs if it...- TheMadHatter
- Post #32
- Forum: 6.9L IH & 7.3L IDI Diesels
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Computer keeps throwing maf codes
The map sensor has been changed three times tried oem ford from the stealership as well as aftermarket standard code 22 map out of self test range- TheMadHatter
- Post #27
- Forum: 6.9L IH & 7.3L IDI Diesels
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Computer keeps throwing maf codes
That is a very interesting thought my cab is wired for a third brake light even though it was removed.- TheMadHatter
- Post #23
- Forum: 6.9L IH & 7.3L IDI Diesels
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Computer keeps throwing maf codes
The lights are incandescent, i truly wish I either could find a mechanical automatic or it’s getting to the point that finding a manual 5speed and chopping the floor etc. tonight it decided that it was going to continue to drop into limp mode repeatedly. So in true fashion it would have highway...- TheMadHatter
- Post #21
- Forum: 6.9L IH & 7.3L IDI Diesels
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Computer keeps throwing maf codes
That hadn’t occurred to me I just walked out and verified my hand drawn wiring schematic to what I setup on the truck. The deck is wired to the trailer lighting harness while the lower lights are wired to the truck oem harness. I left this out before just due to forgetfulness when I bought the...- TheMadHatter
- Post #19
- Forum: 6.9L IH & 7.3L IDI Diesels
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So what did you do with your truck today?
Brought home then new (used) alignment rack- TheMadHatter
- Post #12,545
- Forum: 6.9L IH & 7.3L IDI Diesels
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Computer keeps throwing maf codes
I apologize for my lack of updates the truck is also my only income currently and still out works most new trucks. I have checked the ground the 5volt reference and the signal line the map (maf) sensor is working as designed yet the stupid transmission will lock into limp it does it probably...- TheMadHatter
- Post #17
- Forum: 6.9L IH & 7.3L IDI Diesels
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Computer keeps throwing maf codes
I am quite aware the 7.3 idi doesn’t use the computer but the transmission does mine has decided that it wants to drop into limp mode randomly and complain about the maf sensor being out of range. It’s the only code ever shows up, I have had a talk with the truck and even showed the service...- TheMadHatter
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- Replies: 45
- Forum: 6.9L IH & 7.3L IDI Diesels
