Go Back   iRV2 Forums > iRV2.com COMMUNITY FORUMS > Vintage RV's
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Thread Tools Search this Thread Display Modes
Old 12-04-2014, 05:39 PM   #1
Zoom45's Avatar
Join Date: Nov 2013
Location: Terry, MS
Posts: 89
1988 Ford E350 Fuel issue?

I have a 1988 Ford E350 Class C with a Ford 460 EFI motor. The converter was stopped up when I first got it but I removed it and replaced with a pipe so it has been running pretty good since then. It has about 27,000 original miles and I have replaced the in tank fuel pump, fuel filter, added new plugs and spark plug wires, distributor cap and rotor. It has always gotten about 8-10 mpg. On my last trip it seemed to run fine (cruise at about 62) but the gas mileage has dropped to about 5-6. When I got home it runs great from idle to about mid range then it seems to start stumbling if I push the pedal to the floor. It still runs but doesn't seem to make any more power. It seems to be fine until you get on the gas hard. I checked the fuel pressure at the rail and it reads 32 at idle and if I rev it up high it stays steady at about 36 but the motor seems to start stumbling. The pressure doesn't lose any. Does this sound like a bad high pressure pump under the driver side or a bad ignition module? I haven't removed the filter to check it yet but it is fairly new.

Zoom45 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 12-05-2014, 08:19 AM   #2
Senior Member
429CV23's Avatar
Join Date: Nov 2014
Posts: 306
If it had a cat, I assume it has an O2 sensor? Was it replaced?
What is the fuel pressure spec? 32/36 seems low, but I'm not familiar with the Ford EFI system. I've had 350 and 454 fuel injected GMs, and their spec is ~55psi at idle.
1997 Newmar Mountain Aire 3757
429CV23 is offline   Reply With Quote

ford, fuel

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
1991 Fleetwood 460 Ford fuel pump/starting problems Dick & Kathy Ford Motorhome Chassis Forum 7 10-05-2014 11:45 AM
Genset issue, question about Bio Diesel smlranger Country Coach Owners Forum 3 09-29-2014 05:26 AM
Winnie fuel pump issue sesdawg Class A Motorhome Discussions 22 08-08-2014 05:21 PM
Fuel Gauge, Sender, Empty Fuel Tank TwelveVolt Spartan Motorhome Chassis Forum 2 07-06-2014 11:54 AM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:07 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.