Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-06-2015, 05:30 PM   #1
Rivet Master

 
Currently Looking...
1995 36' Classic 36
Ludington , Michigan
Join Date: May 2011
Posts: 1,305
Overheating!

Click image for larger version

Name:	ImageUploadedByAirstream Forums1430950878.761177.jpg
Views:	152
Size:	120.7 KB
ID:	237904

Click image for larger version

Name:	ImageUploadedByAirstream Forums1430950906.296729.jpg
Views:	147
Size:	114.5 KB
ID:	237905

Click image for larger version

Name:	ImageUploadedByAirstream Forums1430950922.926605.jpg
Views:	142
Size:	109.3 KB
ID:	237906

There are advantages and disadvantages to the rear engine configuration. One disadvantage is dust. Add that to the lack of a crank case ventilation filter or PCV system and you get a certain amount of oil mist added to the dust and blown through the charge air cooler and radiator.

Even with the accessible surfaces power washed, this is what lurked in between,
__________________

__________________
Kota is online now   Reply With Quote
Old 05-06-2015, 06:43 PM   #2
Rivet Master
 
AWCHIEF's Avatar
 
2006 23' Safari SE
Biloxi , Mississippi
Join Date: Nov 2011
Posts: 8,135
Images: 33
Been a long time since any one did some PM.
__________________

__________________
MICHAEL

Do you know what a learning experience is? A learning experience is one of those things that says "You know that thing that you just did? Don't do that."
AWCHIEF is offline   Reply With Quote
Old 05-06-2015, 07:05 PM   #3
Rivet Master
 
mayco's Avatar

 
1982 31' Airstream 310
champaign , Illinois
Join Date: Jun 2013
Posts: 2,760
No bueno
__________________
mayco is offline   Reply With Quote
Old 05-06-2015, 07:15 PM   #4
Keen amature
 
martin300662's Avatar

 
1975 20' Argosy 20
Chestfield , Kent
Join Date: Mar 2014
Posts: 2,107
Nasty!
__________________
martin300662 is offline   Reply With Quote
Old 05-06-2015, 07:24 PM   #5
Rivet Master

 
Currently Looking...
1995 36' Classic 36
Ludington , Michigan
Join Date: May 2011
Posts: 1,305
There were quite a few reasons that 94 sold so cheap. Overheating was the main one. They chased it from all the wrong directions including that hideous air scoop they put on the side.

Click image for larger version

Name:	ImageUploadedByAirstream Forums1430958288.435930.jpg
Views:	112
Size:	106.2 KB
ID:	237915
__________________
Kota is online now   Reply With Quote
Old 05-06-2015, 08:09 PM   #6
4 Rivet Member
 
SebasSF's Avatar
 
1991 30' Airstream 30
San Francisco , California
Join Date: Aug 2013
Posts: 440
Is that a K&N air filter?
__________________
SebasSF is offline   Reply With Quote
Old 05-06-2015, 09:32 PM   #7
Rivet Master
 
mayco's Avatar

 
1982 31' Airstream 310
champaign , Illinois
Join Date: Jun 2013
Posts: 2,760
And nobody bothered to hose off the quilt that had formed.......whoa
__________________
mayco is offline   Reply With Quote
Old 05-06-2015, 09:40 PM   #8
Rivet Master

 
Currently Looking...
1995 36' Classic 36
Ludington , Michigan
Join Date: May 2011
Posts: 1,305
Just 15 lbs of 3/16 plate and angle iron. Probably the thinnest he could arc weld with a old Lincoln buzz box. The K&N was behind it along with baffle removed between the air box and engine compartment. I think they were trying to get more air flow for cooling.
__________________
Kota is online now   Reply With Quote
Old 05-06-2015, 09:53 PM   #9
Rivet Master

 
Currently Looking...
1995 36' Classic 36
Ludington , Michigan
Join Date: May 2011
Posts: 1,305
Overheating!

Quote:
Originally Posted by mayco View Post
And nobody bothered to hose off the quilt that had formed.......whoa

That was all out of sight. The accessible surfaces were all clean as a whistle. I even sprayed it down good with gunk and power washed the it thoroughly trying to blow it out the back side. Didn't touch the stuff inside.

You could tell that air just wasn't flowing through it.
__________________
Kota is online now   Reply With Quote
Old 05-06-2015, 10:30 PM   #10
3 Rivet Member
 
bellastream's Avatar
 
1969 31' Sovereign
Auburn , Washington
Join Date: Aug 2014
Posts: 118
No doubt. I bet it was overheating if you spray out regularly it will never build up to the point of not coming out the back side when you spray with a pressure washer.
__________________
bellastream is offline   Reply With Quote
Old 05-07-2015, 06:40 AM   #11
4 Rivet Member
 
Currently Looking...
z , North Carolina
Join Date: Oct 2014
Posts: 262
Images: 7
By the looks of it, you might as well have had a towel over it. Now that's a true case of "starving" for air flow. I'm sure the engine is even saying "Thank you Kota!"
__________________
FishinHatteras is offline   Reply With Quote
Old 05-07-2015, 11:56 AM   #12
Rivet Master

 
Currently Looking...
1995 36' Classic 36
Ludington , Michigan
Join Date: May 2011
Posts: 1,305
Quote:
Originally Posted by bellastream View Post
No doubt. I bet it was overheating if you spray out regularly it will never build up to the point of not coming out the back side when you spray with a pressure washer.

I've cleaned my 95 regularly since I've owned it. It will be interesting to see how the airflow compares. I'm betting the 95 has some dirt embedded in the stack. I've also noticed that the 95 has an unused (factory) freon condenser sandwiched between the CAC and radiator. It's been removed on the 94. You can see the evidence that it was there by the silicone potting.

I think it's important to retrofit a CCV filter in the system to keep the breather mist from turning the radiator into a big K&N.
__________________
Kota is online now   Reply With Quote
Old 05-07-2015, 09:24 PM   #13
Rivet Master

 
Currently Looking...
1995 36' Classic 36
Ludington , Michigan
Join Date: May 2011
Posts: 1,305
Click image for larger version

Name:	ImageUploadedByAirstream Forums1431050913.707338.jpg
Views:	107
Size:	100.3 KB
ID:	237978

After a 20 mile test drive. It used to hit about 210 even on short runs. I'd like to see it run about 180.
__________________
Kota is online now   Reply With Quote
Old 05-09-2015, 06:29 AM   #14
Rivet Master

 
Currently Looking...
1995 36' Classic 36
Ludington , Michigan
Join Date: May 2011
Posts: 1,305
Overheating!

Radiator removal turned out to be fairly easy task.

1. Drain the coolant. I'd recommend refilling with water and doing a flush/clean before pulling the radiator as opposed to after its reinstalled.

2. Remove the CAC and coolant hoses.

3. Remove the reservoir and power steering tank brackets.

3. The fan shroud is held on by 5 bolts across the top and 4 across the bottom. Slide the shroud forward to rest on the fan.

4. The radiator/CAC is held on by the two brackets on the top and two nuts on the bottom. Tilt it back and lift it out. You will need a helper that can lift about 50 lbs awkward without bending the fins on the radiator.

5. The CAC is bolted to the radiator by 4 bolts.

Click image for larger version

Name:	ImageUploadedByAirstream Forums1431169907.462203.jpg
Views:	92
Size:	104.6 KB
ID:	238050

6. It's a good time to pressure wash the engine, change the belts and hoses...

Click image for larger version

Name:	ImageUploadedByAirstream Forums1431170175.371463.jpg
Views:	99
Size:	108.9 KB
ID:	238051

7. If you have 100k miles you might want to think about spending $70 on a new water pump and keeping the old one as a spare.

8. If you have ever been concerned about the Killer Dowel Pin, this is a perfect time to install the kit.

The source of the problem was an oil leak on the air compressor and oil mist from the breather. Mix that with dust and blow it through the fan. The resulting mess was amazingly difficult to pressure wash clean. It took a cans of gunk and couple hot baths an a strong soap solution and a good pressure washer.

I washed the inside of the CAC and pressure tested it.

Click image for larger version

Name:	ImageUploadedByAirstream Forums1431170800.943797.jpg
Views:	98
Size:	111.8 KB
ID:	238052

I found a leak on the inlet tube on the radiator and soldered it.

Click image for larger version

Name:	ImageUploadedByAirstream Forums1431170903.300145.jpg
Views:	98
Size:	288.7 KB
ID:	238053

Click image for larger version

Name:	ImageUploadedByAirstream Forums1431170926.731694.jpg
Views:	87
Size:	111.1 KB
ID:	238054

An option would be to take them both to a radiator shop and have them boiled out and inspected.

I will be installing a crank case vent filter system.

http://diesel-motorsports.com/techfi...tech_specs.pdf

It was amazing how much effort and money was spent by the PO chasing this engine and transmission overheating problem. The visible surfaces were clean. It's impossible to power wash the crud out from the opposite side of the radiator or CAC.

An easy test other than the obvious feel for flow with your hand is placing a light near the fan and looking for light from the back. Works great at night.
__________________

__________________
Kota is online now   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
Overheating 1999 Diesel Cutter Clyde Gartman Mechanics Corner - Engines, Transmission & More... 4 08-24-2011 11:17 AM
New question about an old overheating problem on my 345 Mr. D Mechanics Corner - Engines, Transmission & More... 8 09-30-2006 12:35 PM
Motorhome Overheating Problems geodude1958 Mechanics Corner - Engines, Transmission & More... 14 08-12-2006 09:22 AM
Suburban 350 TV overheating wayne.yl Mechanics Corner - Engines, Transmission & More... 11 06-16-2006 10:13 AM
1989 370 Ford 460 Overheating ViewRVs Mechanics Corner - Engines, Transmission & More... 14 07-05-2004 04:46 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:15 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.