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Old 02-05-2018, 05:25 PM   #81 (permalink)
Thijmen156's Avatar
Join Date: Sep 2017
Location: The Netherlands
Posts: 73

Originally Posted by OkDually View Post
I would install a fresh OPS with that new lift pump.

1995 trucks need the OPS relay mod installed to help take the electrical load off of the OPS.
Thanks for the reply! Everything makes sense now I read that thread you linked me. I did not know that when cranking the truck the ECM sends power to the Lift pump. When started the OPS takes over. I measured the voltage on the LP while a buddy of mine cranked the truck... So it probably never received enough/any power while running.. Makes total sense now. Will order a new OPS tomorrow and I'll work on that relay mod after, thanks!

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