RV.Net Open Roads Forum: Class A Motorhomes: FORD 460 Overheating Mystery

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Class A Motorhomes

Open Roads Forum  >  Class A Motorhomes

 > FORD 460 Overheating Mystery

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 8  
Prev  |  Next
Sponsored By:
Stim

NE Florida

Senior Member

Joined: 05/23/2007

View Profile


Offline
Posted: 06/22/20 08:43pm Link  |  Quote  |  Print  |  Notify Moderator

To check head gasket you do a compression check.
Has the timing been checked to see if it is correct?
Possible advance problem, vacuum hose?

A Good Cigar

Avondale, AZ

New Member

Joined: 07/25/2016

View Profile


Offline
Posted: 06/22/20 08:47pm Link  |  Quote  |  Print  |  Notify Moderator

I agree, if your engine fan isn't kicking on until 230 or 240 then it's bad or the wrong one! Verify the temps, maybe it's not the heavy duty one for RV's. I'd also do a cooling system flush, there may be build up in the engine block if it wasn't flushed during the radiator replacement from years ago. I'm in Avondale, so not too far from you, and after I did my coolant flush I did a 70/30 distilled water to coolant ratio. We don't have to worry about freezing temperatures in the valley, and more water is better for removing heat! BTW, you didn't adjust the carburetor on a `97, Ford went to fuel injection on the 460 in `88[emoticon]
Let us know what you find!


2000 Itasca Suncruiser 35U
2004 Grand Cherokee Overland HO 4.7 4x4 Toad

goprolocal

Gilbert, Arizona

New Member

Joined: 06/21/2020

View Profile


Offline
Posted: 06/22/20 09:20pm Link  |  Quote  |  Print  |  Notify Moderator

Great ideas on the timing and flush. I don't know that the shop that replaced the radiator did any sort of flush. The rig has low mileage, but it's 23 years old...maybe there's **** clogging up the cooling system. Would a radiator "flush" clean it out? Is there a way to know if there is a blockage somehow?

So I have 3 things to check:

collapsing radiator hose
flush coolant system and put 70/30 (thanks for the ratio, i would have though more coolant is better)
timing

I'll update you soon! Thanks again.

crawford

Dandridge Tenn.

Senior Member

Joined: 03/22/2006

View Profile



Good Sam RV Club Member

Offline
Posted: 06/23/20 07:25am Link  |  Quote  |  Print  |  Notify Moderator

goprolocal wrote:

I'm going to try that blown head gasket coolant test too...thanks!

This channel South main auto is the man and e bay sell the kit cheep no quessing this channel if you like to learn the right way to repairs it's the one.


Change from a c class to a A class Georgetown 07 triple slide

STBRetired

I-80 and I-55

Senior Member

Joined: 11/23/2015

View Profile



Good Sam RV Club Member

Offline
Posted: 06/23/20 10:01am Link  |  Quote  |  Print  |  Notify Moderator

If your transmission cooler is inside the radiator, install a separate one and don't use the one in the radiator. The trans will put a lot of heat into the radiator when under load like towing of climbing hills. Your trans will be happier too. Check your trans fluid to see if it is darker than normal and if it smells burnt.


1999 Newmar MACA 3796 F53 6.8L
2016 Ford Edge Sport
Roadmaster Sterling A/T with Brake Buddy Select


RLS7201

Beautyful Downtown Gladstone, MO

Senior Member

Joined: 10/26/2002

View Profile


Offline
Posted: 06/23/20 12:45pm Link  |  Quote  |  Print  |  Notify Moderator

STBRetired wrote:

If your transmission cooler is inside the radiator, install a separate one and don't use the one in the radiator. The trans will put a lot of heat into the radiator when under load like towing of climbing hills. Your trans will be happier too. Check your trans fluid to see if it is darker than normal and if it smells burnt.


On the OP's coach, not using the trany cooler in the radiator is a very bad idea. The OP's coach has 2 tranny coolers. The first one is air over oil and the second one is coolant over oil. The second cooler/heater helps keep the tranny up to temperature in cool weather. Ford engineered it correctly.

Richard


95 Bounder 32H F53
460/528 stroker
Web Master
MWPSchooners.com
First brake job
1941 Hudson


Bikeboy57

Inverness, FL

Senior Member

Joined: 08/09/2006

View Profile


Offline
Posted: 06/24/20 11:49am Link  |  Quote  |  Print  |  Notify Moderator

Fan should be coming on at a lower temp.


Richard and Rhonda
1999 Newell
Subaru Outback toad

Brian in Michigan

S.E. Mi.

Senior Member

Joined: 03/13/2003

View Profile


Offline
Posted: 06/24/20 01:29pm Link  |  Quote  |  Print  |  Notify Moderator

Is there a rubber cover/dam above your radiator? this keeps the air coming through the grill from going over the radiator. Quite a few years ago I completely sealed up the front around the radiator. Air has nowhere to go except through the radiator. Made a big difference on the cooling of the engine.


1990 GEORGIE BOY 28' 454 4BBL, TURBO 400 TRANS,
CAMPING: WHERE YOU SPEND A SMALL FORTUNE TO LIVE LIKE A HOMELESS PERSON.

goprolocal

Gilbert, Arizona

New Member

Joined: 06/21/2020

View Profile


Offline
Posted: 06/24/20 02:00pm Link  |  Quote  |  Print  |  Notify Moderator

There is a rubber flap that covers stuff above the radiator..it's intact. I just dropped the rig off at a mechanic that I have some faith in. They'll have it for at least 10 days to try to diagnose the issue. The more I think about it, the more I think it's a fuel delivery issue. I think the rig is running lean. The mechanic will obviously check that. I'm hoping to know what the cause is in a couple weeks. I'll report back here. Thank you again to all of you!

garry1p

Oklahoma

Senior Member

Joined: 08/12/2004

View Profile



Good Sam RV Club Member

Offline
Posted: 06/24/20 03:21pm Link  |  Quote  |  Print  |  Notify Moderator

Well good luck I had the same problem.
Ran hot all the time really ran hot pulling my boat.

Did all the things you have done with little to no help.

After all that I added a small transmission cooler in front of radiator and that helped but didn't fix the problem, added one inch of space between the radiator and the AC condenser (they were almost touching) that helped a lot finally added (I think it was called) Water Wetter to the radiator and that dropped the temp about 10 degrees. Still ran around 210/215 on a hot day but I could live with that.

* This post was edited 06/24/20 03:32pm by garry1p *


Garry1p


1990 Holiday Rambler Aluma Lite XL
454 on P-30 Chassis
1999 Jeep Cherokee sport


Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 8  
Prev  |  Next

Open Roads Forum  >  Class A Motorhomes

 > FORD 460 Overheating Mystery
Search:   Advanced Search

Search only in Class A Motorhomes


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2020 CWI, Inc. © 2020 Good Sam Enterprises, LLC. All Rights Reserved.