View Full Version : Cold Start Air Pump
stubill2
31-08-2002, 14:39
Hey people,
What other SEAT models have the emmisions air pump that makes your car sound like a sherpa van on cold start up ?
Does the 20VT have it too ?
Is anyone else's running at this time of the year (ie. mornings and after work) ?
primekart
01-09-2002, 17:36
Most post year model 2001 engines have it. It works every cold startup between 5-30 deg (EURO 4 ECU) OR 15-30 deg (EURO 3 ECU).
Thanks primekart,
Good to know the pump is working when it is supposed to.
I have also dicoverved that the car sounds a lot quieter on cold starts if the output pipe from the pump is actually attached to the engine !
primekart
02-09-2002, 11:17
If the pump is not working, or the input/output pipe is not connected, the ECU will write a fault in its memory, a "Check Engine" sign might light up also, usually because the system is interconnected with the vaccume system!
Interesting.
Had a full diagnostic done last week (while pipe was off) - no faults found.
The only thing the disconnected pipe seems to cause is the car sounding like it has no exhaust while the pump runs. I guess there must be a valve that opens when the car is supposed to be taking secondary pumped air ? Hence the engine noise coming straight out from the open intake ?
Maybe it's a different system on newer engines.