Engine Dies When Lambda Is Unplugged?

[felix2566 2]

I have been having problems with my Gti6, one of them is that when the lambda is unplugged the engine slowly stops running. It takes about 15-20 seconds before it stops. I was under the understanding that it should run with out the lambda? If I unplug it and the engine is close to stalling and I plug it back in it will slowly pick up again.

 

It is the same with three different sensors I have tried.

 

Can any one shed any light onto why this might be?

[welshpug 1,657]

Sounds like it may be running VERY rich (due to another sensor problem) they should still run with the Lambda unplugged albeit a bit rich btu it shouldnt make it stall.

Edited June 26, 2008 by welshpug

[felix2566 2]

Think I will check the ecu water temp sensor again to check that all is Ok there.