I was hoping someone might have a suggestion I'm on my 6th emissions air pump on my 2002 Impala 3.8 V6. The first 5 were on Chevy and I thouht they finally solved the problem but 8,000 later the dreaded check engine light came on and it was the air pump one more time. I got the pump from the mechanic and after taking it apart I found that the failure was caused by water ,black exhaust smelling water, in the motor housing itself. I asked the mechanic if they checked the function of the check valve from the exhaust and they said it seem to be working correctly.
The chevy dealer who did the first 5 pumps said that water has gotten into the fan housing and rusted out the fian blades which seems interesting since the blades are plastic! They did replace the check valve the last time they replaced the pump and the intake upgrade has been installed.
I'm hoping someone might have a idea on how to get this pump to last a little longer I like the car and really don't want to sell it.
Thanks Tim