Extremely low fuel pressure... im stumped..
#11
#13
#14
i have a 98 5.9 24 valve with replacement ddrp lift pump was running fine
now after about mile or two fuel pressure goes from 20lbs to zero
i have to pull over and shut truck off and let sit five min then pressure goes up good for another two miles so on
sometimes if driving i take my foot off pedal pressure goes back up
what can do this ecm ???
now after about mile or two fuel pressure goes from 20lbs to zero
i have to pull over and shut truck off and let sit five min then pressure goes up good for another two miles so on
sometimes if driving i take my foot off pedal pressure goes back up
what can do this ecm ???
#15
You have a restriction in your fuel system. Either your lift pump is not pulling the fuel from the tank or your fuel filter is clogged, or maybe you have some solid particulate in your tank that is being sucked in or around the fuel pick up. After letting it sit, it falls away and fuel pressure is restored. We had this on a big Peterbilt at work where someone dropped a rag into the tank. As common as the lift pump failures are on these, I would suspect that but I have seen fuel filters do this as well. Personally, I would replace the fuel filter first. I have seen many problems from aftermarket filters that get a little dirty and stop flowing. I personally also only recommend Fleet Guard or Mopar filters. Fleet Guard makes the filters for Mopar diesels. If you buy a Mopar, you are buying a Fleetguard.
Good Luck
Good Luck
#16
Thread
Thread Starter
Forum
Replies
Last Post
RatsMC
Chevy/GMC 6.2L and 6.5L
19
05-04-2015 05:25 PM