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I've been having a lot of problems with my 2000 F350 5.4 V8. When you put it in reverse it gurgles like a diesel, the rpms drop way below 1000, and it just sounds like all power is dying (my alternator and battery are fine). If you just keep your foot on the gas and back up it'll surge backwards on its own WAY faster than you want, but if you take your feet off of everything it stalls out (it's an automatic so I'm pretty sure that shouldn't happen). It's also been giving me problems going down the road where the rpms will go up between 3000 and 5000 but it'll just sit at 30 mph until it finally kicks back and goes. I'm running 93 and have been using fuel injector cleaner and it's not helping. Any advice would be greatly appreciated!
It has 73,700 miles on it and runs fine in neutral and park. There aren't any codes popping up either. I'm hoping it's not a tranny issue...I just got this truck and it's 100 miles over its thousand mile warranty. Figures...
I had a similar problem with my v10 it was the vacum hose that connects from the pcv valve to the in the passenger side valve cover to the manifold. The engine ran fine at idle, but in gear and driving vacum pulled through the hose caused a slit that had worn through from chaffing to open up and caused all kinds of headaches (engine RPM's up/down, sputtering, stalling while in gear, surgine etc..) Just an idea to check.
Just figured I'd say this so anyone else with these problems knows... my transmission is burnt up. past the point of repair it needs rebuilt. So much for a simple fix.