1988 - 1998 (GMT400) Section for all discussion related to the 1987-1998 Chevrolet and GMC trucks.

Surge After Shifting

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Old January 27th, 2021 | 10:50 AM
  #11  
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I wasn't able to get my hands on an OBD I scanner, but I did find a test involving a paper clip and a list of codes on this forum. Based on the flashes I got it is the TPS sensor. I will be ordering that and getting it swapped. Thank you for your help!
Old February 22nd, 2021 | 10:38 AM
  #12  
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Well, I replaced the TPS and it ran well for a week or two. Going to work today, taking off from red lights and stop signs it started acting up again. Any other thoughts or ideas to try?
Old February 22nd, 2021 | 11:15 AM
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I know it sounds elementery, but give your connections a check, see if they are working their way loose. Remember, they are as old as the truck, so they may be a bit of a pain.
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oilcanhenry (March 2nd, 2021)
Old February 22nd, 2021 | 12:38 PM
  #14  
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Originally Posted by Mr. Dude with a face
I know it sounds elementery, but give your connections a check, see if they are working their way loose. Remember, they are as old as the truck, so they may be a bit of a pain.
It's a place to start. I thought I had a good click when I put it back together, but with my luck it did work it's way loose.
Old March 1st, 2021 | 5:06 PM
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So the plug is together, but has a little play. I pressed it together as tight as I could get it. Seemed to run fine right after starting while everything was cold, once it warmed up to operating temp though it started acting up again. Could it be a MAP sensor? All the vacuum lines look to be in decent shape, but the sensor itself seems to be pretty bouncy on it's mount.
Old March 2nd, 2021 | 1:16 PM
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Originally Posted by Red 94
I wasn't able to get my hands on an OBD I scanner, but I did find a test involving a paper clip and a list of codes on this forum. Based on the flashes I got it is the TPS sensor. I will be ordering that and getting it swapped. Thank you for your help!
Yeah the OBD I scanners came with so many adapters. I have an OBD I kit myself, and I'm not even an ASE tech!!

Working on a Husky 125B leaf blower now. It's getting spark, but I don't enough under pressure. Might have to get a new coil for $32 bucks!!!! Ouch!!

Last edited by oilcanhenry; March 2nd, 2021 at 1:20 PM.
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