93yotasr5
Come and take it
Any of yous guys have a spare 93-94 vafm that is in working condition that they'd be willing to sell? Mine is on its way out.
93-94 vafm (1 Viewer)
- Thread starter 93yotasr5
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What is your truck doing?
If you want to come over to my house Saturday morning you can test drive your truck with my AFM to see if that really is the issue to help pinpoint the problem.
93yotasr5
Come and take it
buy a v8 60 and the code problem will go away 
Test your wiring before throwing parts at it. Mine had intermittent major issues turned out to be a bad ecu ground in the wiring harness. Misfiring, codes and cold start issues. It was the ECM ground for tps and afm.
I have a spare afm if you want to test with it. It has a bad temp sensor but won't throw the afm code. I have a spare 94 ECM too if you want to throw it in to test.
To test your wiring unplug the correct plug from your ECM and sensor giving you trouble. Then run a wire from the ecu side pin to one lead on your multi meter. I used a paper clip in the ecm connector pin with the wire wrapped around it. With the sensor connector disconnected connect the other lead on your multimeter to the same color wire under the hood. Each wire should have .1 ohms to .7. If it's higher than .7 ohm you have a bad wire somewhere in the harness or bad connection. Also with both sides of wiring unplugged testing from pin to pin there should be infinite resistance between all pins. If there is any continuity between pins there are bare wires are touching inside the harness somewhere.
PM me if you need the ECM pin out diagram
I have a spare afm if you want to test with it. It has a bad temp sensor but won't throw the afm code. I have a spare 94 ECM too if you want to throw it in to test.
To test your wiring unplug the correct plug from your ECM and sensor giving you trouble. Then run a wire from the ecu side pin to one lead on your multi meter. I used a paper clip in the ecm connector pin with the wire wrapped around it. With the sensor connector disconnected connect the other lead on your multimeter to the same color wire under the hood. Each wire should have .1 ohms to .7. If it's higher than .7 ohm you have a bad wire somewhere in the harness or bad connection. Also with both sides of wiring unplugged testing from pin to pin there should be infinite resistance between all pins. If there is any continuity between pins there are bare wires are touching inside the harness somewhere.
PM me if you need the ECM pin out diagram
Atwalz
Civil Engineer
Yes. Bad temp sensor
what was the solution to your code 25 and 26? I have the same intermitted issue.