Go Back   iRV2 Forums > iRV2.com COMMUNITY FORUMS > Vintage RV's
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
 
Thread Tools Search this Thread Display Modes
 
Old 12-14-2009, 04:21 PM   #1
Senior Member
 
TitanicPilot's Avatar
 
Join Date: Oct 2009
Location: Southern Wisconsin, USA
Posts: 144
1985 P30 Chassis-Where is the Fuel Pump Relay?

The P30 chassis has an in-tank electric pump, a chassis rail mounted booster pump, plus the mechanical pump on the engine. The electric pumps won't run and I can't find the fuel pump relay that is shown in the schematic. Can anybody tell me where to look for that little devil?

Thanks,
__________________

__________________
Dave & Marilyn - Southern Wisconsin
1985 33' Pace Arrow "Titanic", 454+.040", Thorley Tri-Y
Quadrajet, Torque Cam, TH475 w/Cooler, No Dash A/C
TitanicPilot 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 12-14-2009, 08:41 PM   #2
Senior Member
 
Gary - K7GLD's Avatar
 
Join Date: Aug 2009
Posts: 1,696
HMMmmmm - wonder if that's true on our P30 based '88 Winnie as to the intank pump?
__________________

__________________
John Day....|'88 Winnebago Super Chief 27ft. Class A
Eastern .....|'88 KIT model 240 24 ft. 5er
Oregon ......|'02 Dodge/Cummins 2500 Quad Cab
Gary - K7GLD is offline   Reply With Quote
Old 12-14-2009, 08:55 PM   #3
Senior Member
 
Workhorse Chassis Owner
Join Date: Dec 2006
Location: La Quinta California
Posts: 523
Quote:
Originally Posted by Gary - K7GLD View Post
HMMmmmm - wonder if that's true on our P30 based '88 Winnie as to the intank pump?
Gary, My 87 had the in the tank pump but I'm not sure about the 85 model.....

The current 83 only has the mechanical and I made the big mistake of adding a "Carter" electric pump

Carter claims the fuel can be pulled through but with a stock A.C. Delco mechanical pump and thats not true, Added a Edelbrock 1722 mechanical and tossed the Carter and all is well.

Jim
__________________
JimElliott is offline   Reply With Quote
Old 12-14-2009, 09:19 PM   #4
Senior Member
 
mfire1339's Avatar
 
Monaco Owners Club
Workhorse Chassis Owner
Join Date: Jun 2008
Location: Glendora Ca.
Posts: 1,080
My thinking was if the engine was fuel injected it got an high pressure electric pump in fuel tank. My 85 was carb'd so just a mechanical pump.

Mike
__________________
2004 Monaco Monarch
Blueox, SMI, 1990 Wrangler YJ
mfire1339 is online now   Reply With Quote
Old 12-14-2009, 09:28 PM   #5
Senior Member
 
Join Date: May 2004
Location: Auburn, CA, Havasu, AZ & Mulege, BCS
Posts: 5,007
Dave- my 95 P30 V-8 diesel had an oil sender/ fuel pump relay in the valley of the V (as in V-8) at the rear of the engine. Hard to see and had to R&R it by Braille. Took a special deep socket, tho it was available at any NAPA. Oil pressure pushed a plunger w/contacts on it to close the relay & allow continued fuel pump voltage; the ECM discontinued fuel pump voltage after about 5 seconds so the electric pump needed the relay closed to keep fuel pumping & engine running.
Your gasser may have a similar relay in the same area (GM's engineers designed both engines).
__________________
Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project
EngineerMike is offline   Reply With Quote
Old 12-14-2009, 10:11 PM   #6
Senior Member
 
justimagination's Avatar
 
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Apr 2008
Location: Monroe, Ga USA
Posts: 670
Dave,
I may not have an answer for you, but on my previous 1982 Pace Arrow P-30 454 engine, which had a carbeurator, I could not be sure if it even had a fuel pump in the Fuel tank. It only had the Electric Pump mounted on the frame rail, prior to going to distribution block. That motorhome had two (2) seperate fuel tanks, with a switch on the left side of the dash panel. The switch for the electric pump was located right below the fuel tank switch. The motorhome would run fine on the engine mechanical pump without the help of the electric pump as long as you were on the front tank. If you switched to the rear tank, which held more gals of fuel, you had to turn on the electric pump or it would start to miss for lack of fuel flow. Keep up the good work, and good luck.
David G.
__________________
_____________________________________________
USAF 1959-1963/ Innaguration parade 1961,
1997 Fleetwood Southwind 37Y, 460 ENGINE on FORD chassis, Power Platform with Tag Axle.
justimagination is offline   Reply With Quote
Old 12-15-2009, 08:18 AM   #7
Member
 
roadwalt's Avatar
 
Workhorse Chassis Owner
Join Date: Jan 2009
Location: Zephyrhills, Florida
Posts: 48
Fuel Pump Relay

On My 87 Winnebago Chieftan 31', I had two tanks, main 60gal, and Aux 35gal. The main tank had an in tank electric full pump, the rear Aux tank used only the engine pump. The relay and valving to switch tanks was above the main tank. If the fuel filter located in the side rail was dirty, the engine would only rim on the main tank, and stumble badly on the Aux tank (even with a new engine pump)
Also check the condition of the vent lines above the tanks. Mine cracked bad, and would dump fuel on a fill up.
Good luck
__________________
2003 Newmar Kountry Star 3614, W22 248 WB, Banks Stinger & Ottomind, Motosat HD LCD TV's, WD, 58K "Home is where I park it" Walt
roadwalt is offline   Reply With Quote
Old 12-15-2009, 11:25 AM   #8
Senior Member
 
Gary - K7GLD's Avatar
 
Join Date: Aug 2009
Posts: 1,696
Quote:
Originally Posted by mfire1339 View Post
My thinking was if the engine was fuel injected it got an high pressure electric pump in fuel tank. My 85 was carb'd so just a mechanical pump.

Mike
AND:

Quote:
Dave- my 95 P30 V-8 diesel had an oil sender/ fuel pump relay in the valley of the V (as in V-8) at the rear of the engine. Hard to see and had to R&R it by Braille. Took a special deep socket, tho it was available at any NAPA. Oil pressure pushed a plunger w/contacts on it to close the relay & allow continued fuel pump voltage; the ECM discontinued fuel pump voltage after about 5 seconds so the electric pump needed the relay closed to keep fuel pumping & engine running.
Your gasser may have a similar relay in the same area (GM's engineers designed both engines).

HMMmmm - seems we're sorta all over the map here - the OP was referring to an '85 P30 GASSER chassis - and likely a GM BB engine, as in my similar '88 Winnie - as far as *I* know, all these setups prior to about '93 were carbureted (not injected!) engines - mine has the block-mounted mechanical pump, and I *thought* I had seen what appeared to be an OEM electric helper pump mounted to the frame rail as well - this subject of an additional electric fuel pump INSIDE the (SINGLE!) 80 gallon fuel tank is a new one for me - and likely does NOT share any particular relevance with MH setups that are diesel, or made after about '93 or so...

I'd sure like to hear more about this - but sorta limited to the general year and fuel system types that actually apply to this topic...
__________________
John Day....|'88 Winnebago Super Chief 27ft. Class A
Eastern .....|'88 KIT model 240 24 ft. 5er
Oregon ......|'02 Dodge/Cummins 2500 Quad Cab
Gary - K7GLD is offline   Reply With Quote
Old 12-15-2009, 12:39 PM   #9
Senior Member
 
Join Date: Sep 2007
Location: texas
Posts: 1,858
my 1985 southwind doesnt have pump in tank my thought would be check the pressure sensor for the oil pressure with no oil pressure electric pump does not get 12 volts
dave
__________________
whem2fish is offline   Reply With Quote
Old 12-15-2009, 03:15 PM   #10
Senior Member
 
Gary - K7GLD's Avatar
 
Join Date: Aug 2009
Posts: 1,696
Quote:
Originally Posted by whem2fish View Post
my 1985 southwind doesnt have pump in tank my thought would be check the pressure sensor for the oil pressure with no oil pressure electric pump does not get 12 volts
dave
We bought our '88 Winnie late this last summer - and I spent most of my time on higher priority repairs and replacements - so other than a few glances in other underside areas, did not specifically look at the fuel tank and lines running to it - including any wiring to the tank. As stated in my previous post, I saw what I *thought* looked like an electric fuel pump on the frame rail in what I *thought* was the fuel line, in addition to the engine mechanical pump I also saw - but didn't take the time to get into a detailed inspection...
__________________
John Day....|'88 Winnebago Super Chief 27ft. Class A
Eastern .....|'88 KIT model 240 24 ft. 5er
Oregon ......|'02 Dodge/Cummins 2500 Quad Cab
Gary - K7GLD is offline   Reply With Quote
Old 12-16-2009, 12:43 AM   #11
Senior Member
 
TitanicPilot's Avatar
 
Join Date: Oct 2009
Location: Southern Wisconsin, USA
Posts: 144
Quote:
Originally Posted by whem2fish View Post
my 1985 southwind doesnt have pump in tank my thought would be check the pressure sensor for the oil pressure with no oil pressure electric pump does not get 12 volts
dave
Then how do you get fuel to the engine before you try to start it? Is there an overide switch? We have a carburetor, a single fuel tank and no dash switch.

Dave
__________________
Dave & Marilyn - Southern Wisconsin
1985 33' Pace Arrow "Titanic", 454+.040", Thorley Tri-Y
Quadrajet, Torque Cam, TH475 w/Cooler, No Dash A/C
TitanicPilot is offline   Reply With Quote
Old 12-16-2009, 03:40 AM   #12
Senior Member
 
Join Date: Sep 2007
Location: texas
Posts: 1,858
if my rv has sat for a while the carb is dry so motor will turn over maybe 15 seconds before starting this is on the mechanical pump unless some one has abdded a override switch there will not be one i had read the oil pressure switch is a safty in case of a wreck and gas is leaking no oil pressure no gas hope this helps
dave
__________________
whem2fish is offline   Reply With Quote
Old 12-18-2009, 12:07 AM   #13
Senior Member
 
TitanicPilot's Avatar
 
Join Date: Oct 2009
Location: Southern Wisconsin, USA
Posts: 144
I've exchanged emails with Donna R. Roe, Sr. Administrative Specialist at Fleetwood customer relations and she wrote this:
Quote:
By taking off the engine cover between the driver and passenger seats, the fuel pump relay is a little black relay and would be located on the left hand side of the engine block. The oil pressure switch could also be bad and that would also be on the left hand side, at the bottom by the sending unit. There were some Chevrolet chassis that had an OEM electric fuel pump in the gas tank along with the side mounted electric fuel pump installed by Fleetwood.
When we pulled the engine I didn't see any relay on it, so that still remains a mystery. I will check out the pressure switch as had also been mentioned by whem2fish. I wonder how much pressure it takes to trigger the switch? By the way, we also have the single, 80 gallon fuel tank like Gary - K7GLD.

Thanks for all the suggestions and comments so far; I feel like we're getting close to a solution.
__________________
Dave & Marilyn - Southern Wisconsin
1985 33' Pace Arrow "Titanic", 454+.040", Thorley Tri-Y
Quadrajet, Torque Cam, TH475 w/Cooler, No Dash A/C
TitanicPilot is offline   Reply With Quote
Old 12-18-2009, 03:47 AM   #14
Senior Member
 
Join Date: Sep 2007
Location: texas
Posts: 1,858
hope it works out keep us informed ill try to help
dave
__________________

__________________
whem2fish is offline   Reply With Quote
Reply



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
Anyone change generator fuel hose from tank to fuel pump? vacation on wheels MH-General Discussions & Problems 4 07-19-2009 08:39 PM
Generac Fuel Pump tropical36 National RV Owner's Forum 5 09-10-2008 12:46 PM
Gen. Fuel pump Yellow Crow Vintage RV's 4 06-17-2008 02:54 PM
Generator Fuel Pump tropical36 Workhorse and Chevrolet Chassis Motorhome Forum 1 05-11-2008 03:53 PM
Fuel Pump TAN Workhorse and Chevrolet Chassis Motorhome Forum 3 04-18-2008 08:53 AM

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

RV & Travel Trailer Communities

Our RV & Travel Trailer sites encompasses virtually all types of Recreational Vehicles, from brand-specific to general RV communities.

» More about our RV Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002-2012 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:52 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2014, vBulletin Solutions, Inc.