1992 Astro - Silver / Gray / 4 Wheels
I checked mine today, and in-gear at idle I measured 5.67 g/s but I can't say if this is normal or not.pmou said:that would be great! the reason i thought this was low was because in the factory manual under P0101 it states that the MAF should read " 7-12g/s at ide to 150g/s or more at the time of the 1-2 shift"tonydobbs said:If my memory serves the last time I measured my MAF it was 4.6 at idle, so that doesn't seem too unusual. It's going to measure higher when it's cold and the RPM is higher. If I take a drive today I will check the MAF data and post it here.pmou said:It then read what seemed quite low (4.5g/s). Before this, it was reading between 8.5 - 11.5 at low/high (cold) idle.
lol and now that i'm reading this closer it also states that
I'm assuming the ignition 1 circuit is the red lead? i verified resistance from that pin to + terminal. So perhaps this could be the problem? I will double check that resistance (this was KOEO) edit -- err, key on engine off.. i realized i have no idea how to differentiate the O's for off/on in those abbreviations.a high resistance of 15 ohms or more on the ignition 1 voltage circuit may cause this DTC to set. A high resistance may cause a drivability concern before this DTC sets
Definitely replace the crumbling line, but it sounds like your issue is fixed. I wouldn't stress to much about the MAF reading.pmou said:Anyway, following up on the P0101 -- took a longer drive and still no code (not pending either) so that seems promising. None of the MAF numbers appear to have changed though. My manual says 7-12.5 g/s is a normal reading for MAF at idle, however when searching for P0101 and looking at what other people have copy/pasted as the trouble code description, some site 3-10 g/s as the proper range. Perhaps this is a different model year? I have no idea. I'm going to plan to replace that crumbling PCV line with something and then see what I see as far as the PCV system soon when I have the doghouse off. For now, calling the P0101 "Fixed"
I'm not sure I'm totally following.. you are saying there is another vaccum check valve I need to look at? I have a 2003 w/ rear AC, no rear heat.sixsix said:One member is using an aquarium piece - 2-3 bucks if that.
Years later he says it still works.
The CPI motor has 2 check valves in the vacuum circuits.