Hello All,
I have been doing the work on a 2000 Chevy Astro for a family member it has roughly 130k on the clock.. It currently has two issues.
1# I pulled a P0101 Mass Air Flow (MAF) Circuit Range. Tried cleaning it with MAF cleaner, no dice.. the vehicle does have two drive-ability symptoms that I believe are related.. sometimes it will hesitate when taking off (never experienced this, but the driver has.) When you try to go WOT, the engine will rev very harshly but will start slowing down(I have experienced this with a clogged cat, but do not believe this is the case). When operating the vehicle with the MAF unplugged, it gains all of its power back.. however the transmission shifts very harshly..
- Is this a confirmed bad MAF? Could there be more underlying issues?
2# Non-visible coolant loss.. are the LIM gaskets the suspect here? Similar to the GM 3.1/3.4 I always thought it was only those two engines, but do not know if it affected any of the others.. are there any other common coolant leaks on these vehicles? I do not see any Anti-freeze in the oil, and no oil in the anti-freeze.. Maybe(hopefully) its a leaky hose/radiator I am not seeing.
If I end up having to pull the intake manifolds and heads.. what kinda job am I looking at.. pretty difficult and pretty expensive?
Let me know your thoughts, thanks!
I have been doing the work on a 2000 Chevy Astro for a family member it has roughly 130k on the clock.. It currently has two issues.
1# I pulled a P0101 Mass Air Flow (MAF) Circuit Range. Tried cleaning it with MAF cleaner, no dice.. the vehicle does have two drive-ability symptoms that I believe are related.. sometimes it will hesitate when taking off (never experienced this, but the driver has.) When you try to go WOT, the engine will rev very harshly but will start slowing down(I have experienced this with a clogged cat, but do not believe this is the case). When operating the vehicle with the MAF unplugged, it gains all of its power back.. however the transmission shifts very harshly..
- Is this a confirmed bad MAF? Could there be more underlying issues?
2# Non-visible coolant loss.. are the LIM gaskets the suspect here? Similar to the GM 3.1/3.4 I always thought it was only those two engines, but do not know if it affected any of the others.. are there any other common coolant leaks on these vehicles? I do not see any Anti-freeze in the oil, and no oil in the anti-freeze.. Maybe(hopefully) its a leaky hose/radiator I am not seeing.
If I end up having to pull the intake manifolds and heads.. what kinda job am I looking at.. pretty difficult and pretty expensive?
Let me know your thoughts, thanks!
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