mmmbeer

Walker was the name of the culprit aftermarket lambda.

Thw shop had used an aftermarket lambda-sensor, which cost 1/3 of the OEM, but obviously did not handle the heat. A OEM is ordered and happy results are expected next week. It costs the norwegian equivalent of 415USD and had to be special ordered from Germany. That is kind of steep for a lambda, but it needs doing.

Problem solved! (almost) The problem seems to be in relation to the lambda as you guys said. I took a test drive today and could feel the problem coming and going away. A huge loss of power for 10-20 seconds and then back to normal. The plugs were full of sot and smelled of fuel. I then disconnected the lambda wiring-connectin and the problem disappeared. I am now getting back to normal color on my plugs and I took a long testdrive with no problems. The remaining question is if it is caused by the lambda-probe itself or some other issue like ground or ecu problem. Anyway I am going back to the shop which installed the new lambda-probe. I checked all the ground wires and they seem to be in good condition.

I had a exhaust emission test done before and after the catlytic converter and lambda change. It was high on all emissions before the change and perfect after the change. This was a few months ago. Now it is really flooding fuel, so much that I can smell the fuel and also getting drops of fuel/sot out the exhaust tip. Edit: At least I thought it was fuel dripping, because of the smell. But it could ofcourse be condensed water with sot along with the smell of fuel. Anyone have info about hall-sender symptoms?

Thanks for the help so far guys, but the problem seem to still be there. But only now and then. I got a tip that it could be the hall-sender. Could anyone explain what symptoms one might get when this one starts to act up?

The blue tempsensor seems to be working. I measured the resistance to be 300ohm in a boiling caserolle, and climbing all the way up to 2200 when dipped in cool tapwater. Any other ideas? The lambda is only providing small fuel corrections, right? It could not cause this much fuelflooding, or could it? If it could I would have to get it back to the shop who installed the new catalytic converter and lambda recently.

I recently had some hessitation and almost stalling with my G60. The problem seemed to come and go. I pulled the sparkplugs and they were all black of sot and drenched in fuel. The same for all 4 plugs. What can cause the engine to get too much fuel? I have not found any vacuum leaks and the airfilter seemed OK enough. The exhaust, catalytic converter and lambda-probe are recently changed by a shop. Please explain what sensors or similar that control fuel delivery to the G60.