Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Proz on 21 February 2009, 15:37:28

Title: Using Live Data
Post by: Proz on 21 February 2009, 15:37:28

Im trying to find out why i have constant P0170 lean exhaust and constant MIL light on.  So if i have live data and my laptop what sort of things should i be looking for ie O2 sensor values , maf values etc ......I've seen lots of pretty numbers but they mean nothing to me  :-[

Thanks

Title: Re: Using Live Data
Post by: Kevin Wood on 21 February 2009, 16:32:49

The fuel trims (long term and short term) would be interesting, Lambda sensor voltages (see if there's activity) and, if you can get someone with a known good MAF sensor to provide some figures for comparison, the MAF voltage &/or volume.

Air and coolant temperatures - make sure they're plausible.

Kevin

Title: Re: Using Live Data
Post by: Proz on 21 February 2009, 16:43:23

Ok thanks .... i'll go out and play tonight or tommorrow with pen and paper and write things down  :y

Title: Re: Using Live Data
Post by: Proz on 21 February 2009, 17:53:32

Should my readings be taken at idle or a various throttle settings.

Title: Re: Using Live Data
Post by: feeutfo on 21 February 2009, 17:59:37

Quote

Should my readings be taken at idle or a various throttle settings.

Would be good to see difference when maf swapped with a known one , as said.

Title: Re: Using Live Data
Post by: Proz on 21 February 2009, 18:52:40

I cant think of anyone even remotely near me with a 2.2 roughly the same year  :-/

Title: Re: Using Live Data
Post by: Kevin Wood on 21 February 2009, 20:29:40

Maybe someone here will be able to take some readings if MAF is suspect. I would be inclined to take some readings at idle and a fast idle, say 2500 RPM with a fully warmed up engine and compare with another car.

Kevin

Title: Re: Using Live Data
Post by: Proz on 21 February 2009, 20:40:50

Quote

Maybe someone here will be able to take some readings if MAF is suspect. I would be inclined to take some readings at idle and a fast idle, say 2500 RPM with a fully warmed up engine and compare with another car.

Kevin

 

Ok thanks for that .... will try and find time to do it tomorrow  :y