
DoggyDiner
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Location (City, State)
Hayward CA
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DoggyDiner started following Multiple LP failures now hard starting when hot and Engine surge between 1500 and 2000 RPM
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Thanks to all that replied to my post. I was able to connect the wire from the cab to the yellow/white wire and Bob's your uncle, it worked. Another issue with surging cropped up while test driving it. Thanks to Mopar1973Man's article and video I was able to reset/calibrate the APPS which cured that issue.
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I wish FASS had kept the wiring for the OE fuel pump to make things a lot easier. If someone could detail how to wire the FASS to the oe fuel pump pigtail, that would be great. I don't like the idea of a switch, because my wife drives it and she could forget to flip the switch to turn the pump back on. I'm a "dummy" when it comes to wiring myself.
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This weekend I got it up to normal temp. I tried starting it after about 5 to 10 minutes. it started as normal. I waited for 30 minutes or so, and tried again. Cranking was longer to start. I tried running cool water over the VP for a few minutes, still longer cranking time. I removed the fuse to the FASS fuel pump. It started as normal. I put the fuse back in, longer crank time. I waited for about an hour to try again. Longer crank time if I waited for the Please Wait light to go out. I tried cranking without waiting, it started as normal. How can I rectify the long crank time when ho
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It starts fine when cold. They rebuilt the original VP44 pump that came on the truck. It's not a Napa part. Napa VP44 pumps start at $1750 not including core. When I start the FP is around 14psi then build up to around 16. I'll see if I have the issue again this weekend, we will be hitting around 100 degrees here in CA.
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Last November my original LP and IP failed. Both were replaced at the same time. The LP was a Napa stock replacement. It failed when I got home from a 900 mile trip. I took it to a shop and they diagnosed the LP failed. When I got it back with a new LP and pressure gauge, the LP failed after 2 weeks. I took it back to the same shop, it's under Napa's warranty, they replaced the LP again. Got it back, 2 weeks later the LP failed. Being fed up with the Napa LP dying, I researched online on aftermarket pumps. I settled on the FASS 95gph mounted close to the fuel tank. Got it started and r