Rusted Coolant lines to Rear Heater Core on E-350 Also A/C lines - Diesel Forum - TheDieselStop.com
E-Series Vans Technical discussion of topics related to vans powered by any of the Navistar engines. This covers a broad number of years, but there isn't enough demand to split it any further.

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post #1 of 8 (permalink) Old 06-27-2009, 08:28 AM Thread Starter
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Rusted Coolant lines to Rear Heater Core on E-350 Also A/C lines

Is this dangerous? I just bought a 95 E350. It's got rusted metal lines to the rear heater core. They're almost ruptured. I'm guessing if the break, all my coolant goes out. This is bad!

So... what are my options?

Can I find these things?

-Ford E350 PSD 1995 --- 500k+ Upgrades-DIY Push Button Manual Shifting E4OD Computer-Stancor Glow Plug Relay-DIY Stage 1 Injectors-Cat Out-Bigger Rear Tires-DIY SD Electric Fuel Pump system
-98 Taurus 3.0 OHV --- 200k+ New H.Gaskets
-MB 300d Turbo Diesel(s): 1980, 84(x2),85, and 87 Fast, nice to work on, great machines. All outgrown and Sold
-GMC Suburban 6.2 Detroit - Slow. Reliable. Sold.
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post #2 of 8 (permalink) Old 06-27-2009, 12:44 PM
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If there is a 'pick & pull' place, you could go try to find some used lines off another van.

If not, maybe another member might know of a place or have some parts. Other then that, you might have to go to a Stealership and buy some 'new' lines.....

1999 E-350 Cub Wagon, 7.3L Power Stroke, E4OD, 3.55
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1990 E-350 Club Wagon, 7.3L IDI, E4OD, 3.54LS
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1994 Chevy C2500 6.5L TD, 3.42
1983 F-150 2x4, 4.9L, C-6 w/GV-OD, 3.55 Farm pickup
1981 C-8000, 3208 CAT, RT-6510, Rockwell SSHD Tandems (Swap)
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1981 VW Rabbit Pickup 1.6L diesel (project)
1978 VW Rabbit 1.5L diesel (project)
1977 K100C, NTC-350, RT-1110, Tandem
1977 Transtar II, NTC-290, RT-9509 Single
1977 Transtar II, Formula 290, RT0-9513, Tandem (project)
1974 C-750, 391CID, Clark 5 speed, Eaton 2 speed
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post #3 of 8 (permalink) Old 06-27-2009, 01:19 PM
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I thought the dealer ones were pretty reasonable.

I had to change them on my '94. The new ones come with protective plastic conduit to prevent rock damage from initiating rust.
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2000 E350 DRW XLT extended wagon (yes! it's a dually!)
17" Ultra Goliath rims
Banks Powerpack, Diablo Predator
Buckstop front bumper, Reunel rear w/ 20,000# reciever
250,000+
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post #4 of 8 (permalink) Old 06-27-2009, 02:50 PM
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Two words..........................

Heater Hose...

My 96 gasser had the rear heater tube go south, used good heater hose to make the patch.. and 2 years ago my psd had the same line go south... heater hose for the patch, then a short while later another spot went south(leak) and that out in the middle of fraken no where,, so with some extra hose that I had , cut the feed and return lines and looped it there with the hose, no heat in the rear until 2 weeks ago when I cut the metal lines just after the engine and ran 22' of feed and return lines to the rear heater and cut out all of the Ford metal lines... I used a plastic pipe to make the just from my bought hose to the ford hose that goes up into the heater.. works great and no worries about rusting out in the future...
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2000 E350 7.3PSD, Hellwig Stablizer bar, 1.5"spacers from old Correct track OR,140 Lightforce with covers, 5x7 LED's From Truck-lite, extras in the bumper. 4"Aero Turbin and 4" all the way back. 1705 program, Scangauge II,265/75/16E, My Photos
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"FAILURE IS NOT AN OPTION"

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post #5 of 8 (permalink) Old 06-27-2009, 02:58 PM Thread Starter
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Maybe flexible copper tubing?

-Ford E350 PSD 1995 --- 500k+ Upgrades-DIY Push Button Manual Shifting E4OD Computer-Stancor Glow Plug Relay-DIY Stage 1 Injectors-Cat Out-Bigger Rear Tires-DIY SD Electric Fuel Pump system
-98 Taurus 3.0 OHV --- 200k+ New H.Gaskets
-MB 300d Turbo Diesel(s): 1980, 84(x2),85, and 87 Fast, nice to work on, great machines. All outgrown and Sold
-GMC Suburban 6.2 Detroit - Slow. Reliable. Sold.
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post #6 of 8 (permalink) Old 06-27-2009, 03:02 PM
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Seen the price of copper?

2000 E350 7.3PSD, Hellwig Stablizer bar, 1.5"spacers from old Correct track OR,140 Lightforce with covers, 5x7 LED's From Truck-lite, extras in the bumper. 4"Aero Turbin and 4" all the way back. 1705 program, Scangauge II,265/75/16E, My Photos
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post #7 of 8 (permalink) Old 06-14-2019, 11:10 PM
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Quote:
Originally Posted by 777funk View Post
Is this dangerous? I just bought a 95 E350. It's got rusted metal lines to the rear heater core. They're almost ruptured. I'm guessing if the break, all my coolant goes out. This is bad!

So... what are my options?

Can I find these things?
Same problem on my 95 club wagon xlt. Slight poke by the gas tank caused a coolant leak all over. Careful inspection showed gross amounts of rust all along the metal coolant pipes to the rear heater. A brief search has not found any replacement metal tubing parts (perhaps Ford stopped making or stocking them if they ever did). Options seem to build new piping from metal tubes and fittings, or perhaps replace the whole metal tubing run with rubber hosing that is easier to route along corners and turns than rigid metal. It seems Ford engineers failed in designing heater tubing that would resist rust over an extended usage life. A question remains, why did they use metal instead of rubber in the first place, which might be applicable knowledge relevant to any plan to replace them with rubber. Another question, similar Ford vans have been built for 2.5 decades since, what parts from more recent models might retrofit onto a 1995?
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post #8 of 8 (permalink) Old 06-25-2019, 07:44 AM
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I agree, something else(material wise) should have been used. When the salt/slush sits on the warm pipes, that's when the corrosion starts much quicker. It's the heat combination. I disconnected mine up near engine, where the quick disconnects are, & made up a small 1/2" copper U-turn with the quick disconnects to plug back in by engine, thus disabling rear heater line. I dont haul a bunch of passengers, to keep warm. If you do decide to monkey with the disconnects, be prepared & have the new ones on hand, because there's a good possibility they will break from aging.

1999 E350 7.3psd , XLT , 15 pass/ext , purchased 6/6/05 w/255k on odo, 8/05 added BTM/straight pipe,5/06 BTS,1"shimmed front coil springs,Michelin XPS 235/85 16 R.,FredGroeske2"rear wheel spacers,1-1/2" rear sway bar,AIC,3 A-pillar guages, Tekonsha envoy,coolant filter,4 pos dp-tuner,In-tank mod & harpooned,dahl-100 prepumpfilter,Scan-guage,Bilstein shocks.
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