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The Stupid Engine Questions Thread

My 94 k25 (94 with 93 drive train) will not idle on a very good day below 1300 rpms ,it started this when i did the tbi mods stage 1 on it,i chenged the whole tbi unit out from a 89 350 and just spliced in the different style tps. it all of the sudden started acting fine and idleing fine for...
- All nut no play
- Post #543
- Oct 2, 2014
- Forum: Engine Performance + Maintenance
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Need exhaust setup opinions!

so i just got my 5th gmt400 (94 with 93 drivetrain) and im a dual exhaust enthusiast,i run straight pipes most of the time just because i like my trucks as loud as possible and there's no emission testing around here so i can get away with no cats or mufflers. But with this truck im going to...
- All nut no play
- Thread
- May 12, 2014
- Replies: 0
- Forum: Exhaust
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need injector wiring diagram

Well I just replaced the ignition control module(not sure if it's a better one or not though) and it's still not wanting to spray fuel,I've traced the wires from the injector plugs all the way through the cab back out the coil and everything looks good,replaced the tbi with good injectors and...
- All nut no play
- Post #3
- Mar 29, 2014
- Forum: Wiring Diagrams
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need injector wiring diagram

Hello,I am new here but i am racking my brain with this truck.i just got it that day so it had allot of stuff that i wasn't aware of yet,It had i nick in the driver side injector plug wire(white) i had it running and i pulled the air pan off and started pulling the tbi riser off and i believe...
- All nut no play
- Thread
- Mar 28, 2014
- Replies: 2
- Forum: Wiring Diagrams