I am troubleshooting a idle problem and was wondering if anyone knows what the MAF reading should be. I am getting 5.6 at idle warmed up

 

Here you go
https://blazerforum.com/forum/2nd-ge...eadings-97498/

5.6 is reasonable

 

I appreciate it. I am hoping its the IAC. I am getting a position of 40 at warm up but and waiting for her to cool down to get a reading.

 

Here's my 2001 Blazer at idle in drive. Note timing advance changed slightly while I scrolled down for additional screen capture.

 

I really appreciate it. It is really strange because it only runs real bad for the first 30 seconds then normal. I am also fighting a p0171 and 74 code for the last year. No leaks, fuel pressure good and spider just replaced lol.