You really need to scan for codes. No sense shotgunning this. It'll be too expensive.
You CAN get a boost control solonoid from the dealer. They'll have it on the shelf.

I need to know what year your car is (I'm assuming SSEi), and I can give you the part number. You're not going to KNOW what the problem may be without scanning for codes.....BUT sometimes the bcs can fail without setting a code. It could still be any number of problems.

The year is a 1992 SSEi

Well, there is no Service Engine light, that'* why I don't know what the problem is.
I went to the dealer and they said the solenoid is a part of the supercharger unit? And that they can only sell it with the supercharger unit?? What gives...
I guess I'll try another dealership and see what they say.

Do you have the GM part number where I can order from?

I recently went through a similar (but not the exact same) problem. I ended up getting an SES light and a code for MAF sensor and TP sensor and I replaced both. Since I cleaned up my throttle body, the car is running perfectly. If you are not getting an SES light, then I would suggest you take the TB apart for a thorough cleaning if it has never been done. This will not cost you any money (unless you have to changed the TB gasket, which should be reusable), and will probably help performance anyway.

See my problem under "*/C and MAF sensor (URGENT)" thread. I don't know if it was the dirty TB in my case for sure, but that'* what I think.

Yea, I'll probably do the same. I have to change the coupler, and I guess I'll take apart the whole thing and see if anythings clogged.

An idea that keeps popping into my head is a restriction somewhere in the exhaust system.

92 SSEi? Use the procedure in Techinfo to scan for codes. You have the flash feature.



from www.gmpartsdirect.com That'* the part you think you need, but scan first.

Thanks alot man! I appreciate it.

Yeah, thats what it feels like. some sort of exhaust clog up. I cant find where though...the car sounds horrible and runs horrible. Would I have to replace the entire exhaust or is there some sort of trouble shooting trick i can try?

Jack up the right side of your car, and kick your catalytic converter. (when it'* cold).

What do you hear? (and use that procedure in Techinfo to check for codes in the meantime).

I dont have a cat though! Kick the muffler?

No cat? Can you PLEASE put the year and model and any MODS or REMOVALS in your sig?

Thanks!

Have you scanned for codes yet?