Originally Posted by blue pearl
Just a quick question on diagnosing a bad pump.....
Is the power loss experienced as extensive as is if you unplug the SC clutch electrical connection? When I did this and took it for a test spin the engine power was much less than just a N/A 6 cylinder. It ran, smooth idle and without missing, but it was WEAK.
Something curious did happened after I reconnected the SC clutch. When I took it for another test spin, to make sure the SC was back in service, upon the first hard acceleration from a stand still it would NOT stop spinning the tires ( I think that when it shifted into second the tires kept spinning). The power seemed better than ever but maybe it was just a fluke. I never tried to re-create the scenario.
I know that when the IC pump is going bad, it DOES feel like the car is a real dog (slower than a normal Crossfire).
I assume this is because the car is running so rich that it bogs it down. More air from a properly functioning supercharger requires more fuel. If that S/C suddenly stops working and the car is still dumping fuel, it will bog and run poorly with low power.
As far as unplugging it...I would THINK that the car would know when it is unplugged, therefore it would know not to dump too much fuel. Maybe not.
SQ