S10 Bogs Giving it Gas | 92 S10

The 1992 s10 blazer developed a running problem that occurred only when trying to give it gas off idle. Did some troubleshooting and determined that the Throttle Position Sensor was the culprit.

[@BillBarr-f1p]

I had a lot of problems with the coil wiring not the coil wire. When you have it running pull on the wiring at the coil.

[@JohnLee-ov2mk]

ever figure out what was wrong with that thing

[@PracticallyStock]

The bog/violent missing right off idle was being caused by a faulty TPS. The TPS had a dead spot and would trick the computer into cutting fuel and freak the whole system out. The video shows how I tested the new and old TPS

[@SuperReznative]

got s10 with the same issues..as well as an old bazer

[@PracticallyStock]

I think it's a relatively common issue, at least checking the throttle position sensor is pretty easy

[@Wedge-Antilles]

@@PracticallyStock its the catalytic converter, cut it off.

[@PracticallyStock]

@@Wedge-Antilles Symptoms didn't suggest a faulty cat and I checked it troubleshooting a different issue and the back pressure was reasonable

[@BillBarr-f1p]

Check the C/K relationship.

[@napodano26]

Also did you check the EGR common in Gm

[@PracticallyStock]

I didn't expect it given the symptoms but I did check it and it was working as intended

[@BillBarr-f1p]

Does it backfire?

[@PracticallyStock]

No, it had a dead spot in the throttle where the car ran really bad but it would always run normal if I kept the throttle below or past that problematic point. The issue was the TPS had a bad spot where it was telling the computer the TBI was at 0% throttle when it was really about 15%. That tricked the computer into cutting back fuel and making the engine lean and miss

[@BillBarr-f1p]

@@PracticallyStock we built a garage in 59 sold it in 17 . My brother died about a year after we retired so I went back to work for the people that bought it. It just wasn’t the same. It’s hard to take orders when you know it’s not going to help so I retired for good about a year later.

[@PracticallyStock]

Understandable. I hope your retirement is going well!

[@Flocks-p7c]

Vacuum leak

[@PracticallyStock]

I literally show how the TPS was the problem. The entire video is showing how the TPS was the problem with the car and I even show the car fixed at the end. A vacuum leak was not the problem