I bought this truck 2 months ago it had its problem got turbo issues i have replaced the waste gate,the boost sensor,and i am on my fourth boost solinoid the vacuum pump is pulling 20 pounds of vacuum .so my problem is the wastegate stays open i have fixed it but it only lasts a couple of weeks replacing the boost soli
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1994 gmc 3500 6.5 turbo problems
- Thread starter big block
- Start date
Will L.
Well-Known Member
Imo, rip off all the vacuum junk and put on a turbomaster.
Then after you've had the truck a while and decide to keep it long term, pit of the junk factory turbo and put on a good one like ATT and some 4"'exhaust. Then you can have more power for free because the better turbo will pay for itself in fuel savings.
Plan c is skip step 1, do the good turbo and sell your stock parts all on eBay to recover your money quicker and don't loose time on the turbo master.
Then after you've had the truck a while and decide to keep it long term, pit of the junk factory turbo and put on a good one like ATT and some 4"'exhaust. Then you can have more power for free because the better turbo will pay for itself in fuel savings.
Plan c is skip step 1, do the good turbo and sell your stock parts all on eBay to recover your money quicker and don't loose time on the turbo master.
JMJNet
Recruit
I would guess that the vacuum lines are bad.