MAF Sensor Help Needed
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Joined: Jan 2013
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From: Decatur AL
MAF Sensor Help Needed
Hi gang,
I have a 2008 C6 Base Corvette I use for a for a track car. It's got a custom tune, forged engine, TEA/TrickFlow heads, Martin Cam and makes good power. I'm having a MAF problem now though.
Hoping I'm not looking at needing a new ECM but I'm believing I am the more I dig into it. I have a recurring P0102 code that keeps throwing. I had a spare MAF so I plopped it in and the code came right back. My filter is clean, no vacuum leaks, and my wiring checks out. With Key-On/Engine Off, I'm getting a solid 12.8V on the pink wire, ground is 0 ohms to chassis, and unplugged the signal wire shows 5V. When I plug it in, it sits at 2.8V and doesn't move a bit when the engine is running. I don't have an oscilloscope to check the frequency but I may try my HPTuners to see if I can with that. Anyway, when I went through the GM tech manual, it seems to indicate if I get the readings I'm mentioning above, then I have a bad ECM. I know it's a pain to reprogram so I'm really hoping I'm overlooking something or there is another avenue to solve this. BUT, if it's ECM, then it's off to Chuck CoW I go.
What got me curious if it could be something else as this happened right after I changed out my water pump. I moved my MAF out of the way when I was swapping out the pump but never got it wet or abused the sensor or wire in any appreciable way. Very odd.
Thanks if you've got any ideas!
Tom
I have a 2008 C6 Base Corvette I use for a for a track car. It's got a custom tune, forged engine, TEA/TrickFlow heads, Martin Cam and makes good power. I'm having a MAF problem now though.
Hoping I'm not looking at needing a new ECM but I'm believing I am the more I dig into it. I have a recurring P0102 code that keeps throwing. I had a spare MAF so I plopped it in and the code came right back. My filter is clean, no vacuum leaks, and my wiring checks out. With Key-On/Engine Off, I'm getting a solid 12.8V on the pink wire, ground is 0 ohms to chassis, and unplugged the signal wire shows 5V. When I plug it in, it sits at 2.8V and doesn't move a bit when the engine is running. I don't have an oscilloscope to check the frequency but I may try my HPTuners to see if I can with that. Anyway, when I went through the GM tech manual, it seems to indicate if I get the readings I'm mentioning above, then I have a bad ECM. I know it's a pain to reprogram so I'm really hoping I'm overlooking something or there is another avenue to solve this. BUT, if it's ECM, then it's off to Chuck CoW I go.
What got me curious if it could be something else as this happened right after I changed out my water pump. I moved my MAF out of the way when I was swapping out the pump but never got it wet or abused the sensor or wire in any appreciable way. Very odd.
Thanks if you've got any ideas!
Tom
Last edited by tgcounts; Oct 22, 2019 at 08:39 AM. Reason: left out details
