P0107 MAP sensor

[Treleaven]

When I am driving down a hill and I down shift in my 98 with AW4, if the RPMS get high enough I get a P0107 code saying the map sensor is failing. Goes away after a few key cycles.replaced the map with 2 others but it still happens.

 

[Sidewinder CC]

Try these tests of the MAP sensor. Read the notes as well.

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Switch to RUN, engine off.

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Engine at idle.

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[Ecomike]

How high are the RPMs getting?

Have you checked the Vacuum hose to the MAP sensor, it may be going bad.

That jeep in the photos is way too clean. :wave:

I love the safety pins, wish I had seen that 12 years ago.

 

[Treleaven]

Got around to doing it.
Engine off Key on Orange wire gives me 5.11 volts
Engine off key on green/brown gives me 4.25 volts
Engine on orange gives me 5.1 volts
Engine on green/brown gives me 1.38 volts and jumps up when the throttle is bliped

 

[N8N_99xj]

Check your wiring harness. This is how the issues with my 99 started, took three different shops for anyone to take me seriously though

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[Treleaven]

What should be checking with the wiring harness?

 

[N8N_99xj]

Mine was chafed where it drops down from the intake and goes to the trans

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[Treleaven]

OK. I will take a look. Ithink ONLY happens if I am doing 65 kmph or more down a steep hill and put it in second to use the engine as a brake.

 

[N8N_99xj]

Mine would do it on a hard right turn, e.g. taking an on/offramp kind of fast. engine would cut out too, which wasn't good.

 

[96Sportxj]

Sub'd!