!990 bronco 5.8L pip voltage

[Dan 2663]

I am have a really bad time with this Bronco trying to find what is causing this erratic idle and driving condition. I left the computer unpluged over night and I installed new plugs and I thought it was over, it ran smooth for about ten minutes, until a few miles down the road and the problem came right back. I run the codes and get 11, 11, 34, 34. but I check all the valve and sensors and they seem to be correct. maybe its the pickup in the distributer, (ICM dist mount) is the PIP voltage surpose to be constant or does it vary like from 10.1 down to 5.8...v . I have installed a new EEC-IV and maybe the parts store been giving me the wrong one. If I remove the spout connector the idle runs smooth but as soon as I plug it in the idle goes haywire again.. I tried an IAC but still did the same. Could it also be the ICM, but I thought that when they go they go, work or no work, not intermitting. I need HELP. Anyone with the same problem at one time or another...

DAN

 

[Dan 2663]

I am have a really bad time with this Bronco trying to find what is causing this erratic idle and driving condition. I left the computer unpluged over night and I installed new plugs and I thought it was over, it ran smooth for about ten minutes, until a few miles down the road and the problem came right back. I run the codes and get 11, 11, 34, 34. but I check all the valve and sensors and they seem to be correct. maybe its the pickup in the distributer, (ICM dist mount) is the PIP voltage surpose to be constant or does it vary like from 10.1 down to 5.8...v  . I have installed a new EEC-IV and maybe the parts store been giving me the wrong one. If I remove the spout connector the idle runs smooth but as soon as I plug it in the idle goes haywire again.. I tried an IAC but still did the same. Could it also be the ICM, but I thought that when they go they go, work or no work, not intermitting. I need HELP. Anyone with the same problem at one time or another...DAN

27193[/snapback]

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I think I found the problem... and someone mentioned it to me from somewhere. My fuel pump relay was getting hot so I unplugged it and as I was plugging it back in the red power wire came out of the connector and it was very corroded and was not making a good contact sooooo.... tomorrow I will clean all the connection with all the relays and see how the Bronco will function, it was already showing a diifferance with just sliding it on and off a few times... I will keep trying till I get it...

Dan