Well I'm still having that bogging and shuttering problem, and someone I talked to said that can happen when you charcoal canister is full or broke (can't remember his exact wording). So how do I know when it's not doing it's job anymore? And if it's not, would it cause my car to bog or shutter when making a hard turn from a stand still (i.e. turn lane or pulling out of a parking lot)?

Thanks for your help.

-The Gunny

 

The canister is filled with little "charcoal brickets" (for lack of a better term.) They never actually reach a high enough temp to burn, they just absorb the fumes of unburnt fuel from the carb/FI system after you shut off the car. Once you start the car, the fumes are slowly sucked back into the carb/FI system.

I've never seen of heard of one being "full". Maybe that's a indescriptive way of saying that the charcoal is no longer working? I dunno.

If it is "broken", then depending on where and how, it could be letting too much air into the fuel mixture, similar to a vacuum leak. But I can't say for sure on a TBI since I've never paid much attention to where it's connected. Just one of those things I never studied.

I do know that on a carb, it's hooked up to the air cleaner itself, therefore it won't ever cause any problems like that. The only problem is, if it's letting air in, it's unfiltered air since the tube is normally set behind the air filter.

I'm not ruling it out as a possibility though. If you want to check it, just find out where it hooks up to the TBI, disconnect it, plug the hoses so the engine doesn't get a "vacuum leak" effect, and see if it helps.

AJ

 

I had a similar problem with my car stalling when stopped at a light, or stop sign. I plugged the vaccuum line that runs to the intake from the canister, and the problem went away. I never determined whether it had something to do with the selenoid or the canister itself. But I just left the inlet to the throttle body plugged and the outlet of the canister open. And everything worked fine. This was on a TPI engine but the idea is the same. If you think it is your canister area giving you the problems, then I would try this. Trial and error can be your best friend sometimes I guess.

 

It has 1 wire harness connected to it.

It has 1 tube that comes out and goes towards the back of the car. I can't tell where it goes, but about 2 feet from the canister (going backwards), it goes from being a rubber hose, to steel tubing. (like brake lines)

It has 1 tube that goes to the front of the TBI unit itself. I guess I'll try that and see what happens.

 

After five days I would hope you found out something.

But anyway, the hose that "turns into" a metal line is where the fuel vapors from the tank come to the canister. The line from the canister to the TBI is where the vapors get sucked into the intake (this is the line that I plugged, that "covered up" my problem) and the wire harness goes to the selenoid which controls when the vapors go to the intake. That's the simplest way I can describe it.

I never did find out the exact problem, nor did I fix it. I just left it, and then my car went bye-bye.