Search found 4 matches

by stevie69p
Sat Mar 09, 2013 7:59 pm
Forum: Diagnostic discussion
Topic: Astra 1.4 EcoTec running rich
Replies: 10
Views: 15969

Re: Astra 1.4 EcoTec running rich

What are the fuel trims at idle and at 2500rpm, if stft and ltft ate within +/-10% with everything connected then it should be safe to fit a cat. Unfortunately, the car is gone now. The customer decided not to go ahead and have a new cat fitted due to the cost involved. Thanks everyone for your hel...
by stevie69p
Thu Mar 07, 2013 7:37 pm
Forum: Diagnostic discussion
Topic: Astra 1.4 EcoTec running rich
Replies: 10
Views: 15969

Re: Astra 1.4 EcoTec running rich

Thanks for the replies folks. I did have a thought that the cat might be goosed, having seen cars before that were just failing CO at say 0.5 and slightly elevated HC levels. It was just that this one was slightly higher again at 0.8 that was putting me off blaming the cat, but now that I cast my mi...
by stevie69p
Thu Mar 07, 2013 3:32 pm
Forum: Diagnostic discussion
Topic: Astra 1.4 EcoTec running rich
Replies: 10
Views: 15969

Re: Astra 1.4 EcoTec running rich

when's it switching merrily between 0.1 and 0.9v, before or after you pull hose off. Whats B1S2 upto ? any captures ? Before the hose is pulled off (i.e. the normal set up). B1S2 is switching too, between 0.2v and 0.6v ish IIRC. I didn't scope it, but was watching it via live data during my initial...
by stevie69p
Thu Mar 07, 2013 12:03 pm
Forum: Diagnostic discussion
Topic: Astra 1.4 EcoTec running rich
Replies: 10
Views: 15969

Astra 1.4 EcoTec running rich

Hi, first time poster here... we recently got a Picoscope 4 channel kit and I have been trying to get to grips with it... We have a Vauxhall Astra 1.4 EcoTec 2002 model in the workshop with high CO. readings are CO 0.8, HC 130, o2 1.8%, Lambda 1.02 No DTCs present on vehicle. No misfire, car runs ok...