Engine Stumbles After Approx 10 Miles Driven

[FR-425]

morning, thanks for the response. I haven't noticed any throttle issues so far so will move on to next thing and get TPS tested. I tried testing the MAF yesterday but wasn't having any luck following instructions from the Haynes manual (possibly/probably operator error...lol) and will def check out that ground strap you spoke about on right side. What's the best procedure to accurately test the MAF? Thanks again everyone for your help!!! She's getting there

What I was getting at was that the MAF is an easy location to test the "reference voltage" I didn't mean test the MAF.

You have codes for low voltage and short or no output type faults all over the place..

Checking that the reference voltage is between 4.8 and 5.2 volts seems like a good place to start.