petervan

The words...."part throttle"....do not appear in the pro-diag tool.
Man, I hate this crap. Old days....running rich? Throttle up to where the issue is, cut ignition at that rpm and roll to a stop. Now...check the plugs. eeeaassyy.
Hell, if you know your car well enough...just look at and smell the exhaust!
Not sure....start rejetting the carbs....idles, main, air correctors, tubes, chokes....a feel for the difference. To me...THAT was fun!.... understanding how to read what a computer is reading isn't

TonyStarkz

032 same as vag...they are all the same

petervan

many thanks!!....well, it's out into the rain, I guess

petervan

Idled car for ~ 10 minutes. Block32...O2 P.L. stayed at 2.3%. Good reading?

jhoeppel

* FUEL TRIM: compensation for fuel injector maps. "Additive" trim=at idle; "multiplicative" trim=higher rpm's.
Measure block--Group 032
>Field 1: trim at idle (additive)
>Field 2: trim at higher rpm (mult)
Negative values= running too rich and O2 sensors are leaning it out; Positive values= running too lean and O2 sensors are making it richer. Both readings will vary in real time; specs for normal operation usually +/- 10%. Out of spec Additive trim (1st field) indicates vacuum leak... Out of spec Mult trim (2nd trim) indicates a fault at higher rpm's and may indicate a faulty MAF.

So I'd suspect 2.3% at idle is fine. Might check at high rpm's as well, although that's indicative of MAF problems.

~john

joe@vwvortex

Yup - right in the range