Truck will bog down while cruising around 60 70mph but otherwise seems ok.
What is your question?
Ok so I'm getting code 33 high signal voltage to map sensor, and code 35 iac problem. Now I replaced iac valve, map sensor, ignition coil, tps, pcv valve, egr valve, throttle body gasket, a few vacuum hoses, and the fuel filter, oh and rebuilt fuel pressure regulator. Seems to run great now except when I hit the highway and around 70 it goes blub blub blub and loses power until u slam the gas then it flies like normal until cruising... Had fuel pump replaces about 75000 ago and truck has 300,000 on it.
What makes this problem better or worse?
cruising at higher speeds makes it worse
How long has your 1995 Chevrolet C1500 had this problem?
About 3 month but got progressively worse
2 Replies
Hello, have you thought about checking exhaust flow? An intermittently restricted exhaust system could cause something like this. Checking base fuel pressure to the fuel rail key on engine off would be important. Checking for any intake restrictions of any kind, as well as anything else that would influence air and fuel mix ratios. At that mileage, it's so hard to guess much without hands on inspection. Good luck!
Similar Questions
See more 1995 Chevrolet C1500 QuestionsWhat are the best Chevrolet repair shops?
Tuffy Tire & Auto Service Center - Grandview
Excite Auto Repair & Towing
All In Auto Service
Tuffy Tire & Auto Service - Grove City
Blackstone Complete Auto Care
Boyd's Tire & Service - Columbus
Tuffy Tire & Auto Service Center - Grandview
Excite Auto Repair & Towing