95 4x4, 4.3, Vin W, OBDII, CMFI...PCM question
 

Truck won't stay running. Replaced most sensors already, finally checked voltage to the sensors, from PCM. No voltage going to TPS, or MAP Sensor. Haynes manual says I should have 5 volts to each with the ignition on, but I have nothing to these 2 sensors. My next guess is the PCM is spent. everything else checks out fine. Found a PCM that comes programmed according to my VIN#, from NAPA for $150, so it could be worse. Just want someone else's opinion. anybody got any ideas before I order the PCM?

RE: 95 4x4, 4.3, Vin W, OBDII, CMFI...PCM question
 

Well, you could probe the wires at the PCM that send the voltage to the TPS & MAP sensors. That may be were I'd go next before coughin' up the $150...

I don't have my references with me at work, but I may be able to get you the cavity numbers on the PCM for the wires you need. Plus I'll take a look at the wiring diagrams to see if there is anything else in common with those sensors that you may be able to check.