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Water in fuel light diagnostic help...

3K views 1 reply 2 participants last post by  tim94f250 
#1 ·
I really do not like the search feature on this forum...

I have a 1990 F-250 4x4 with the 7.3 engine. The "water in fuel" light does not come on like the other idiot lights do when you turn the key. I grounded out the light and the bulb works but under no other circumstances does the light work. I cleaned the connections to the fuel filter and all the connections are intact at the filter.
Is there any diagnostics I can do to track the problem down? Wiring diagrams? Suggestions?
Thanks!
 
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