97 f 350 blows heater cores - Ford Powerstroke Diesel Forum
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 12 Old 11-30-2010, 01:16 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Nov 2010
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
97 f 350 blows heater cores

i have tried everything that i can think of in the last year (11 heater cores) i have hooked ground wires from the heater core to the fender and on to the block, cleaned all the oem grounds that i can find, flushed the system treated the water electrolisis and for the ph balance, what could be causing this, they ususally last between 600 and 1500 miles
dano4 is offline  
post #2 of 12 Old 11-30-2010, 01:46 PM
Premium Member
 
ryandamo's Avatar
 
Join Date: Jun 2009
Location: Connecticut
Posts: 1,205
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
are you using a cheap brand? did you install it correctly or is it rubbing on something, 11 seems a little high, what exactly are they doing when they blow


2016 F450 6.7L XLT 4x4Dump, bone stock
1994 F250 7.3L XLT 4x4 ZF5 , Centurion, 4" Lift, 6637, Gulf Coast Bypass Filter, Big fuel tanks, dana 60 swap, No longer dually
1997 F350 7.3L XLT 4x4Dump, E4OD, 4 in exhaust, TS 6 position, 3/8 Trans line+external filter
2013 Scag Turf Tiger 61" 1.1L Caterpillar Diesel
1960 John Deere 440 Backhoe 2-53 detroit
ryandamo is offline  
post #3 of 12 Old 11-30-2010, 05:28 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Nov 2010
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
i have tried napa, schucks orielly, tisco(local international dealer) and ford i have got it down to 11 minutes i can do it in the parking lot all of the mounting rubbers are good they are getting pinholes in the top tank or in the tubes at the top where the water is hitting and dispersing when it comes in
dano4 is offline  
post #4 of 12 Old 11-30-2010, 06:30 PM
Compression Ignition Addict
 
Join Date: Aug 2008
Location: Madison, WI
Posts: 3,922
Thanks: 4
Thanked 132 Times in 128 Posts
Mentioned: 0 Post(s)
Quoted: 35 Post(s)
Feedback Score: 0 reviews
Some contaminant in the coolant? Have you flushed the coolant anytime in the meanwhile?
madpogue is offline  
post #5 of 12 Old 11-30-2010, 07:07 PM
Premium Member
 
ryandamo's Avatar
 
Join Date: Jun 2009
Location: Connecticut
Posts: 1,205
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
thats very odd, maybee try installing a coolant filter? what type of coolant are you running


2016 F450 6.7L XLT 4x4Dump, bone stock
1994 F250 7.3L XLT 4x4 ZF5 , Centurion, 4" Lift, 6637, Gulf Coast Bypass Filter, Big fuel tanks, dana 60 swap, No longer dually
1997 F350 7.3L XLT 4x4Dump, E4OD, 4 in exhaust, TS 6 position, 3/8 Trans line+external filter
2013 Scag Turf Tiger 61" 1.1L Caterpillar Diesel
1960 John Deere 440 Backhoe 2-53 detroit
ryandamo is offline  
post #6 of 12 Old 11-30-2010, 07:17 PM
Compression Ignition Addict
 
late_99_PSD's Avatar
 
Join Date: Oct 2009
Location: Taneytown, Maryland
Posts: 3,293
Thanks: 2
Thanked 11 Times in 11 Posts
Mentioned: 0 Post(s)
Quoted: 10 Post(s)
Feedback Score: 0 reviews
sounds like your having pressure building in your system. Maby your cap is bad or a clogged vent?

Allen
1999.5 F-350 7.3, six-speed

late_99_PSD is offline  
post #7 of 12 Old 11-30-2010, 07:58 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Nov 2010
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
we have flushed it twice, i heard somewhere that sometimes this engine has this problem and there is a flow reducer available that you can put in the pressure line leading to the heater core, it seems to do it if i am pulling hard up hill at higher rpms or if i have came down a long hill out in the woods and maybe go 15 minutes without accelerating and the engine temp is down so the thermostat is closed and then go to go uphill and it gets the sudden change in pressure or flow. i have also changed thermostat and cap
dano4 is offline  
post #8 of 12 Old 12-06-2010, 07:27 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Nov 2010
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
hmm a coolant filter i hadnt thought of that, maybe deposites in the system eroding holes in the heater core. when i fixed the oil cooler last week the block heater had mineral deposites on it and it looked like a solid bar, so i took a wire brush and a little pick and made it look like copper again. as far as the coolant i am using i have been getting it from a freind that has a fleet of logging trucks comes in a 55 gallon drum pre mixed with disstilled water
dano4 is offline  
post #9 of 12 Old 12-06-2010, 05:23 PM
Compression Ignition Addict
 
Join Date: Aug 2008
Location: Madison, WI
Posts: 3,922
Thanks: 4
Thanked 132 Times in 128 Posts
Mentioned: 0 Post(s)
Quoted: 35 Post(s)
Feedback Score: 0 reviews
Does this supply of coolant have the anti-cavitation additive (SCA), or are you adding it yourself, and measuring the concentration?
madpogue is offline  
post #10 of 12 Old 12-06-2010, 06:30 PM
Compression Ignition Addict
 
Join Date: Jan 2010
Location: Western Montana
Posts: 288
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Short of making this a X-File episode; if the coolant has been a constant (granted, there are other constants), try a different coolant. I don't get how the coolant would cause that, but...

Brian

'96 F250 SC, 7.3, 4x4, E40D, and it's red... and white.
retmotor is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome