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Old 02-26-2020, 12:43 PM   #1
Camaroguy
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Re: Son's 68 c10 Short Bed

Interesting little problem I have been having. Every since we fired this motor, I have been trying to chase down a check engine light showing low voltage to the MAF. I have tried a couple different MAF Sensors without any success. Started trying to figure it out, and through the process of elimination, I came to the realization the MAF connector was wired incorrectly. Just got off the phone with Hotwire Auto and we went over his schematic and he confirmed the B = black wire and C = red wire are flipped.

Interestingly, we are currently doing the same motor in another truck for my nephew and his was wired incorrectly as well.
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Old 05-17-2020, 07:59 AM   #2
Grip
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Re: Son's 68 c10 Short Bed

Quote:
Originally Posted by Camaroguy View Post
Interesting little problem I have been having. Every since we fired this motor, I have been trying to chase down a check engine light showing low voltage to the MAF. I have tried a couple different MAF Sensors without any success. Started trying to figure it out, and through the process of elimination, I came to the realization the MAF connector was wired incorrectly. Just got off the phone with Hotwire Auto and we went over his schematic and he confirmed the B = black wire and C = red wire are flipped.

Interestingly, we are currently doing the same motor in another truck for my nephew and his was wired incorrectly as well.
I ran into a similar issue while doing an LS swap. I was using a factory truck harness but used the newer “card style” MAF instead of the truck one. Thought I had a bad MAF but it turns out that GM uses a different pin out (same plug shape) for the two styles of MAF. Once I looked at and compared the wiring schematics, I swapped the two wires and bingo.
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Old 05-17-2020, 09:43 PM   #3
Camaroguy
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Re: Son's 68 c10 Short Bed

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Originally Posted by Grip View Post
I ran into a similar issue while doing an LS swap. I was using a factory truck harness but used the newer “card style” MAF instead of the truck one. Thought I had a bad MAF but it turns out that GM uses a different pin out (same plug shape) for the two styles of MAF. Once I looked at and compared the wiring schematics, I swapped the two wires and bingo.
Yeah, what a hassle.
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Old 05-17-2020, 09:53 PM   #4
KevinK7
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Re: Son's 68 c10 Short Bed

That truck is looking great, ...and I love that color too Awsome work
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Old 05-17-2020, 10:01 PM   #5
Camaroguy
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Re: Son's 68 c10 Short Bed

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That truck is looking great, ...and I love that color too Awsome work
Thank you. It will hopefully start coming together quick. The boy is getting excited for sure.
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Old 05-19-2020, 12:19 PM   #6
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Re: Son's 68 c10 Short Bed

I ordered a "smoothie" bumper for the rear of the truck a couple months ago. It finally came in the other day and looks real nice. This is the match to the front bumper I had previously purchased a few years ago.
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Current Built (68 c10 swb): http://67-72chevytrucks.com/vboard/s...d.php?t=787712
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Old 05-19-2020, 03:45 PM   #7
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Re: Son's 68 c10 Short Bed

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I ordered a "smoothie" bumper for the rear of the truck a couple months ago. It finally came in the other day and looks real nice. This is the match to the front bumper I had previously purchased a few years ago.
Can you get/post a pic of the inside (back-side)?
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