Hey scotty, I have a 1986 chevy celebrity 2.8 that's giving me hell!! A month ago I had a new carburetor put on and after the installation the car haven't been running right. It's been misfiring and hesiting and putting out a code 23. I tried finding the intake air sensor but had no success in finding it. I did check and realized that they didn't use the efe heater gasket. Do you think that's the problem?
What problem was the replacement carb installed to address? Is it an OEM type or an aftermarket replacement? Rebuilt or brand new?
By the mid-1980s carburetors were well past their use-by date. The ones that were still in use at that time were fiendishly complex due to period emission controls. Many even had a crude closed-loop mode with a solenoid or stepper motor used to fine-tune the mixture. There are quite a few adjustments that have to be spot on for those carbs to work properly. Mass-market rebuilt carbs tend to be of low quality and are rarely tuned properly.
If that missing gasket is causing a vacuum leak that will definitely give you problems.
