I got this new to me 06 3.5l 150,000miles

The truck is starting fine and runs in open loop but has a hard stall in closed loop, like I turned the ignition off stall, no hickup or stuttering. This stall is at idle and I cannot drive it once is stalls , I have to wait for it to cool/ go into open loop.
If i disconnect the MAF it will not stall.

I'm thinking this is a PCM issue but not for sure, I would appreciate any insight that y'all may have.
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Clean the MAF.

 

I cleaned the original MAF and when it didn't help replaced it with a new acdelco MAF just to be certain.

Please let me know what other info you need for input. The truck got a full tuneup I'm really at a loss except for a vvt or pcm issue
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​​​i am reaching my diagnostic limits and would very much appreciate some help

 

how long will it run without the MAF connected? what temps are you seeing on intake and engine.

 

​​​​​​It seems to run at idle indefinitely with MAF disconnected. I did not try to put it on the road

I'm not sure exactly what your asking of intake. Ambient temperature is 60f. I got 217f engine temp on the scanner, I could see the thermostat regulating the temp some . Please explain this more

 

Clean the MAF connector. Btw, post the codes.

 

 

I will reclean the connector tomorrow, as of now there are no codes .

I will update after cleaning
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Thank you so very much!

 

​​​​​​I don't understand, from what I can tell normal operating temps are 195f to 220f
I got 117f from the OBD2 .

am I missing something?




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what do you mean by ambient air temperature at 60?
the MAF sensor has an intake temperature sensor what temp does the scanner read for that sensor.