Hey guys,
So the 02 Passat 4 motion I picked up came with the CEL on and these codes.
Try as I could to hear the SAI pump running on cold start, I could not. Even when turning off the motor, giving it a chance to begin blowing after starting, I would not hear the vacuum sound winding down.
I checked the fuse and tested the relay, they were all good. Plastic hoses were good. Assumed the pump was dead.
Yesterday spent about 2 hours at the pick & pull with some wires and a drill battery to test multiple pumps, ended up finding one and bought it ($35).
Today I installed it, cleared the code, and started the car. No CEL came back on. Went under the car and confirmed that the pump was blowing and then as I let it idle a few minutes it eventually powered down.
Here's where things get stupid. With the first pump out of the car I hooked it up directly to the battery and it turned on just fine...
For my loss-wasted time.
Can anyone explain what may have been going on here. I should have just cleared the code to begin with before getting into all this and next time I'll remember to test the pump on the car before removal. Biggest question is: Why would I not hear the vacuum sound continuing when shutting off the car?
So the 02 Passat 4 motion I picked up came with the CEL on and these codes.
Try as I could to hear the SAI pump running on cold start, I could not. Even when turning off the motor, giving it a chance to begin blowing after starting, I would not hear the vacuum sound winding down.
I checked the fuse and tested the relay, they were all good. Plastic hoses were good. Assumed the pump was dead.
Yesterday spent about 2 hours at the pick & pull with some wires and a drill battery to test multiple pumps, ended up finding one and bought it ($35).
Today I installed it, cleared the code, and started the car. No CEL came back on. Went under the car and confirmed that the pump was blowing and then as I let it idle a few minutes it eventually powered down.
Here's where things get stupid. With the first pump out of the car I hooked it up directly to the battery and it turned on just fine...
For my loss-wasted time.
Can anyone explain what may have been going on here. I should have just cleared the code to begin with before getting into all this and next time I'll remember to test the pump on the car before removal. Biggest question is: Why would I not hear the vacuum sound continuing when shutting off the car?