Need help guys
Thread Starter
Melting Slicks
Joined: Nov 2003
Posts: 3,011
Likes: 9
From: Dublin GA
Need help guys
I replaced my ailing transmission with a rebuilt, updated RPM trans today.
When I went to fire it up to add fluid, it ran for about 30 secs and shut off. try repeatedly to crank it, but it would fire and shut off every time.
Codes were
107
705
706
and a couple of other random ones.
It always gave me a "service engine soon
Everytime I clear the codes, 107 ALWAYS came back. Even without trying to crank the car, it would immediatly reset after clearing.
I have a FAST, so I can see the MAP and it is plugged in and (although loose as they all are) it is in the manifold.
Do you think I am looking at a bad MAP, or is it more complicated? Just seems odd that I didn't touch it, and it started giving issues after working on the TRANS.....
BTW, I am SD tuned, no MAF
When I went to fire it up to add fluid, it ran for about 30 secs and shut off. try repeatedly to crank it, but it would fire and shut off every time.
Codes were
107
705
706
and a couple of other random ones.
It always gave me a "service engine soon
Everytime I clear the codes, 107 ALWAYS came back. Even without trying to crank the car, it would immediatly reset after clearing.
I have a FAST, so I can see the MAP and it is plugged in and (although loose as they all are) it is in the manifold.
Do you think I am looking at a bad MAP, or is it more complicated? Just seems odd that I didn't touch it, and it started giving issues after working on the TRANS.....
BTW, I am SD tuned, no MAF
Thread Starter
Melting Slicks
Joined: Nov 2003
Posts: 3,011
Likes: 9
From: Dublin GA
Update
Note; the car is approx. 3hrs away, so trying to do some research before making the trip back
Although "someone" forgot the paper with the codes, I THINK one of them was 1635. The P1635 code is set when the reference voltage from the sensor is out of range. It gets 5 volt readings from the TPS, EGR, MAP and a couple others. Since it also gave a code for 107 (MAP sensor) I can only hope that the MAP is bad and it is NOT sending back the “reference voltage” to the PCM.
I have ordered a GM MAP.
Note; the car is approx. 3hrs away, so trying to do some research before making the trip back
Although "someone" forgot the paper with the codes, I THINK one of them was 1635. The P1635 code is set when the reference voltage from the sensor is out of range. It gets 5 volt readings from the TPS, EGR, MAP and a couple others. Since it also gave a code for 107 (MAP sensor) I can only hope that the MAP is bad and it is NOT sending back the “reference voltage” to the PCM.
I have ordered a GM MAP.
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Joined: Dec 2010
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2020 Corvette of the Year Finalist (performance mods)
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did you disconnect the battery?... I'm sd tuned as well and when I disconnect the battery and start the car for the first time after reconnecting it the car will run like crap and sometimes die until the maf fails then it runs perfect... on one occasion it took probably 10-15 tries before the maf failed... it could just be the way mine is tuned though
Thread Starter
Melting Slicks
Joined: Nov 2003
Posts: 3,011
Likes: 9
From: Dublin GA
Thanks
I had the battery disconnected while I swapped the trans. I unhook the battery anytime I do any major work, and have never had an issue before.
Brett gave me some volt readings to check, but the car is at a buddys house because he has a two post lift. Makes it difficult to diagnose.
I had the battery disconnected while I swapped the trans. I unhook the battery anytime I do any major work, and have never had an issue before.
Brett gave me some volt readings to check, but the car is at a buddys house because he has a two post lift. Makes it difficult to diagnose.
