HOrnbrod Posted August 15, 2017 Share Posted August 15, 2017 The aux fan comes on w. the A/C and/or when the engine temp reaches ~230 or so. Mine never comes on before that even after trying different temp sensors in the thermostat housing. My dash temp gauge could be reading high too.... Link to comment Share on other sites More sharing options...
Rymanrph Posted August 16, 2017 Author Share Posted August 16, 2017 I rented the fuel pressure tester yesterday again and the truck wouldn't start. It looks like my battery might not be holding a charge. I charged it up for a while and could get the truck to crank and start, but would either die immediately or occasionally I could keep it running with gas, but would die as soon as I got off the throttle. From the short amount of time that it would run, it looks like I was getting fuel pressure in the high 40s. My battery is less than a year old, but I'm going to go have it tested just to be sure. Link to comment Share on other sites More sharing options...
Rymanrph Posted August 17, 2017 Author Share Posted August 17, 2017 I got the battery tested and it's fine. The truck started right up yesterday with no issues; it ran for a while and never cut off. The fuel pressure was good and steady. I also did a leak down test and it was fine too. I ran it for a while, turned it off and turned it back on without incident. I'm really confused now. Link to comment Share on other sites More sharing options...
HOrnbrod Posted August 17, 2017 Share Posted August 17, 2017 Still no codes? Link to comment Share on other sites More sharing options...
Rymanrph Posted August 17, 2017 Author Share Posted August 17, 2017 Still no codes? Nothing. The only thing that I can think of is that I didn't have a good connection at the battery, but I had already replaced my battery terminals maybe a year ago and I even recently removed and cleaned them with a wire brush after I started having issues (both the cable terminals and the posts on the battery). Link to comment Share on other sites More sharing options...
Rymanrph Posted November 2, 2018 Author Share Posted November 2, 2018 If anyone ever comes back and reads this thread, it ended up being my battery terminals. I really had to crank down on them to get a solid connection, but I've had no issues since. Link to comment Share on other sites More sharing options...
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