Fuel Pump
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New User
Joined: Aug 2010
Posts: 1
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Fuel Pump
Hi. I have a 1996 Coachman RV which sits on the E350 chassis and 460 engine. Once the engine warms up - 20 miles or so, and the accelerator is depressed, the engine will start to miss, sputter and die. If I turn it off and start it again, it will run great for about 2 miles then do it again. I can actually shift it into neutral at highway speeds, turn it off, start it, shift it into drive and continue.
Here are the codes:
172 EGO Not Switching, Lean exhaust - bank 1
334 EGR (EVP) Voltage above closed limit
542 Fuel pump circuit open - ECA to ground
The shop said that it was the fuel pump but I have replaced the fuel pump and one of the O2 Sensors so far. Still no luck.
Any help will be greatly appreciated!
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Here are the codes:
172 EGO Not Switching, Lean exhaust - bank 1
334 EGR (EVP) Voltage above closed limit
542 Fuel pump circuit open - ECA to ground
The shop said that it was the fuel pump but I have replaced the fuel pump and one of the O2 Sensors so far. Still no luck.
Any help will be greatly appreciated!
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Cargo Master
Joined: Jul 2009
Posts: 2,541
Likes: 54
From: Des Moines
Check and clean the grounds for the fuel pump circuit. I'm not entirely sure what the code 542 means, but I'm guessing it's indicating a bad ground. I can't help you on where to look for them exactly, but perhaps someone else can chime in with that info.
