maf

  1. CruelJung

    IAT Always Reads 32°

    Earlier this year, I solved a cold start issue with my 2008 Yukon XL (5.3 LMG) by replacing my ECT sensor. I discovered a few other issues along the way to that fix and one of those issues is that my intake air temperature consistently reads 32°, regardless of environmental conditions or engine...
  2. G

    OBD2 information overload.. not sure if I should be worried?

    Hey all, I just access to my first 'big kid OBD2 reader'.. its from a friend and I was able to borrow it for the weekend. Looking at data I have never been able to see before (or rather.. seeing it in a different format) was quite interesting.. First.. I noticed my cooling is not as 'done' as...
  3. T

    P0101 + P0300 = ?

    Hi all: I have a 2001 Chevy Tahoe with about 125K miles that doesn't get driven much. It has shown me a couple of codes over the past two months. It started with a P0101 (Mass Air Flow Circuit Range/Performance), so I replaced the MAF sensor (even I can do this without bloodshed!). It felt...
  4. clemenshess97

    Engine stalls when in drive

    Hey everybody, my tahoe was acting very strange today... When I turned it on after sitting for an hour the engine idled very rough between 500-800rpm and needed like 30secs to stay at 650rpms. After 15mins of driving the check engine light came on and the display said the engine has reduced...
  5. sgosa

    Misfire and no power....

    2003 Yukon, 5.3 flex fuel, 200K miles. CEL came on, but it still ran fine. A week or so later it started fluttering or missing when accelerating to merge with traffic. Within the next 10 miles it lost almost all power. Had to be towed home. Now it will barely idle. Runs very rough, seems to have...

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