Recent content by Iowa Fox

  1. I

    1987 Fuel Selector valve help

    Thanks chengny, With your coaching this is starting to make sense. Check my thinking- if I split the connector at the firewall I should be able to check the power on the gray and tan leads. If I have power at the respective dash mounted switch position the dash switch is OK. What is the pink...
  2. I

    1987 Fuel Selector valve help

    Chengny, Thanks a million for all that information, I know you have put some serious thought into this. I've been staring at it until my eyes are going crossed. I have the 5 wire 6 port system. I think GM put them out both ways in 87. I hope their troubleshooting tree applies to both systems. In...
  3. I

    1987 Fuel Selector valve help

    That was the very first thing I did was to take the grond wires off the frame for both tanks and clean and reassemble them. Next I'm going to clean the ground at the buss bar just to be sure. Didn't have time to even look at it today. I also pulled the plug on the selector valve when I cleaned...
  4. I

    1987 Fuel Selector valve help

    Should I be able to hear the valve click when I switch the tanks on the dash with that switch? I think this particular set up was only used for one year (1987). I'm wondering if ethanol could have swelled the o rings in the selector valve since it happened after the very first time I put some in...
  5. I

    1987 Fuel Selector valve help

    Any idea what usually happens to the pollak valves when they take a dump? For a small plastic part they're sure pricey. Thats why I want to be sure before I change it out, plus it looks like a heck of a job.
  6. I

    1987 Fuel Selector valve help

    It stays in place. Its just a simple rocker switch on the 1987 with TB and pumps in the tank.
  7. I

    1987 Fuel Selector valve help

    I'm gonna throw one up for the experts here. I have a 1987 V1500 GMC 305 TB fuel inj that developed fuel system issues. The fuel gage on the right tank stared reading way past full. While driving down the road I flipped the dash switch back and forth a few times to check it. When I flipped it...
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