: 1985 DeVille Whats That, (Fuel System Canister Valve?)

05-28-11, 06:58 PM
hey quys, on my cadillac behind the coolant overflow tank and forward of the right front wheel well is a canister with hoses going to it and it looks like a electric switch on top of it, i think it has to do with the fuel system, my car was surging alittle i checked all the vacuum lines and found one missing on the canister, i got a new hose, could a missing hose on that item make the car idle surge? thanks

05-28-11, 09:17 PM
That's the EVAP system charcoal canister. If the hose was on the vacuum side (to the manifold), then it is a vacuum leak and can definitely cause a surge.

05-29-11, 06:13 PM
thank you