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Author Topic: New to me GXP p0107  (Read 159 times)

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Offline dolbygxp

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New to me GXP p0107
« on: November 20, 2021, 03:41:45 PM »
Just purchased an '07 GXP and have been tinkering with it. Looking forward to the journey. I've replaced the map sensor and am getting a p0107. I'm up for checking the pins with a meter, is there a pinout for  which pins on the connector are what ? I'm assuming there is a I'm assuming one is supply voltage to the sensor another is ground and the third should be voltage to the ecm. But which is which ? Let me  know if I'm on the right track or if I'm barking up the wrong tree.

Thanks

Offline kgschlosser

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Re: New to me GXP p0107
« Reply #1 on: November 21, 2021, 03:16:38 PM »
gray should be 5V, tan should  be ground and the light green is the signal coming out of the sensor.

The sensors are easily damaged if hey get dropped so there is the possibility that it could have gotten dropped at some point.

Be careful and DO NOT short any of the wires for the sensor the 5v and the ground come from the ECM and if shorted can cause damage to the ECM. The ECM is supposed to be protected from damaged being caused to if you shorted them, I wouldn't want to find out if it actually  works like it is supposed to.

If you have a good 5V testing between the gray and the tan then you probably have an issue with the sensor itself.

Offline kgschlosser

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Re: New to me GXP p0107
« Reply #2 on: November 21, 2021, 03:17:44 PM »
Oh and if you had the code but didn't clear it it will eventually go away on its own but will take a long while to do so. It is best to clear the code and see if it returns.

Offline dolbygxp

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Re: New to me GXP p0107
« Reply #3 on: November 21, 2021, 08:17:40 PM »
Thanks. It will be a few days before I can put a meter on it...holiday and all. My sneaking suspicion is that the connector is wonky. When I changed the sensor I had to clip a wire tie that was holding it on, so something's not quite right.

Offline dolbygxp

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Re: New to me GXP p0107
« Reply #4 on: November 29, 2021, 11:44:39 PM »
So quick update, measured 4.97 v on the supply side and nothing on the return side. I changed the sensor and presto chango, all good. wire-tied the connector back as it doesn't seem to make really good contact ( i'll re-terminate over the winter) no codes now but low boost. Nothing over 2 psi under mile acceleration. Is this a leak problem ? if so where would be the best place to start ? any advice is appreciated.

Offline Sol Asylum

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Re: New to me GXP p0107
« Reply #5 on: Yesterday at 01:09:03 AM »
I'm going to assume that was supposed to say mild acceleration.  If that is the case, go out driving and push the pedal to the floor and see what it reads.  Mild driving doesn't show much boost but if you get a little aggressive the turbo comes alive and tires start to have fun making smoke and noise.

2007 Aggressive GXP

Offline dolbygxp

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Re: New to me GXP p0107
« Reply #6 on: Yesterday at 10:23:32 PM »
you're correct. so i took your advice and got out on the freeway and it showed up to 13 psi but that was very quick most of the boost was less than 10. is what i'm experiencing normal turbo behavior (this is my first car with one) ? it would seem that the acceleration curve is quite a bit different than a n.a.

Offline Sol Asylum

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Re: New to me GXP p0107
« Reply #7 on: Today at 01:04:19 AM »
Sounds about right.  With the variable valve engine you have a pretty flat torque curve.

Is your car manual or automatic?
2007 Aggressive GXP

 

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