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    PatHebert's Avatar
    PatHebert Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Feb 21, 2009, 08:51 AM
    97 dodge ram problems
    Hi,
    I have a 97 ram 1500 with a 5.9 gas engine. I had to replace the trans and now the truck won't start. I need to know how to test the pcm if possible? I've replaced the cam sensor, crank sensor, coil, dist. cap rotor. My fuel pump is not kicking on and I have no spark. I do have power to pcm with ignition on but no voltage coming from pcm to asd. I have been told that the pcm is bad but I don't know if they were guessing or not. Truck been sitting almost a year now and I don't want to spend more money on parts that I don't need.
    Thanks


    Any suggestions?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Feb 21, 2009, 08:57 AM

    . Test all underhood and underdash fuses with a test light or multimeter:

    https://www.askmehelpdesk.com/cars-t...tml#post252145

    Locate fuel pump fuse and relay, in the underhood fuse/relay box. Remove and clean contacts going to each--apply dielectric grease. Ensure relay works.

    . Test for codes.

    . Test PCM for 5 reference volts, using a multimeter, going to the MAP Sensor connector, when the ignition switch is turned to ON:

    http://shop.advanceautoparts.com/Pro...pe=414&PTSet=A

    Attach positive probe to socket, negative probe to ground.

    . Locate and clean main PCM ground.

    . Check ignition switch for wear, pitting, or melting.
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