Question about 1990 Ford F250
First things first - check to make sure proper fuel was put into it - a gas engine will start, run and drive with diesel for short distance. Usually the engine will begin to idle high, or just die.
1. You're fusable link (next to battery) came loose or is disconnected. I had this exact same year make and model truck a few years ago, and after replacing part after part, I was told to check this, and sure enough, as a few days before I was fiddling in this area (checking wires), the fusable link came loose (was not tightened all the way).
How to Fix: Easy - find the fusable link (will be right at top behind battery (along other wires, only one of it's kind though). Push the two connectors together and twist each toward eachother (one clockwise, the other counter clockwise).
If this does not fix the issue - check all battery terminal connections including the starter, ground to chassi or block (sometimes a bracket ) - just follow the negative (black/ground) wire from the battery.
Please let me know if you need further assistance.
Guru, Premium Expert @ Fixya.com
Posted on Jul 15, 2010
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Posted on Jan 02, 2017
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