Electronic ignition problems
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Electronic ignition problems
I have a '87 Ford F350 one-ton truck with a 460 gas engine and automatic transmission. I am having problems with the ignition system. I can get the truck started but when I put it in gear, it dies. It will do this when moving in a straight line, going around corners, etc.
To date I have changed the fuel pump switch (located on the frame by the left gas tank), a switch of some form - (green in color, cube-type), the oil pressure switch, and an electronic ignition box that mounts on the left fender well and has a blue tab on it.
I am at a complete loss as to what is still causing the problems. Can anyone help? Has anyone had this problem? I use this truck as a tow-vehicle as well as for other chores. I would like to avoid having to put it in a shop if I can but have run out of brilliant ideas.
Thank you for your help.
Gordon Cheffings
To date I have changed the fuel pump switch (located on the frame by the left gas tank), a switch of some form - (green in color, cube-type), the oil pressure switch, and an electronic ignition box that mounts on the left fender well and has a blue tab on it.
I am at a complete loss as to what is still causing the problems. Can anyone help? Has anyone had this problem? I use this truck as a tow-vehicle as well as for other chores. I would like to avoid having to put it in a shop if I can but have run out of brilliant ideas.
Thank you for your help.
Gordon Cheffings
Senior User
Joined: Jun 1999
Posts: 276
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Electronic ignition problems
HAVE YOU TRIED CHANGING THE MODULE ON THE DISTRIBUTOR . I HAD SMILLIAR PROBLEMS AND THE CAUSE WAS THE MODULE ON THE SIDE OF THE DISTRIBUTOR. ALL AUTO PARTS STORES STOCK IT , COST IS AROUND $30 , AND YOU NEED THE TOOL TO TAKE IT OF USALLY LESS THAN $10 . GOOD LUCK
Senior User
Joined: Jun 1999
Posts: 361
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Electronic ignition problems
Dont want to overlook the obviouse. did you relace the fuel filter??? A fouled filter may allow enough fuel to keep you at idle,but stall when the demand becomes more that can be supplied.
Senior User
Joined: Jun 1999
Posts: 349
Likes: 1
Electronic ignition problems
Would definitely disassemble and clean (or replace) the by-pass (BYB) valve (the solenoid like dufer bolted to a casting on the intake). Also clean the throttle bore and butterfly valve with a brush and thinner or carb cleaner. Fords are famous for this problem. The BYB valve meters air past the butterfly valve to control idle. As the clearance between the butterfly and throttle bore get gunked up, the BYB valve is overtasked, resulting in poor idle or stalling.
HTH
HTH
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