Heater Core Failures
Thread Starter
|
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
Heater Core Failures
My friend has a 95 F150 with a 4.9 and is not able to keep a funtioning heater core in his truck for more than a few months. It doesn't matter if its one from the dealer or from the auto parts store. This has been an issue for the last year or two. Does anyone know what is going on with his truck?
Thread Starter
|
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
That could be, but I'm pretty sure there is not any crud in the cooling system. He takes care of his truck and does the maintanace on it.
Good point on the radiator cap. I'll ask him which one he has on it.
Good point on the radiator cap. I'll ask him which one he has on it.
Laughing Gas
Joined: Aug 2010
Posts: 983
Likes: 40
From: Colorado Springs CO
Posting Guru
Joined: Jan 2004
Posts: 2,403
Likes: 4
From: Charlestown, RI
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
I used to blow up heatercores all the time. (like 16 of them)
Went down to a 8psi cap, still happened.
I know the owner of an auto radiator shop and would watch him pressure test them to 30psi.
Electrolysis wasn't the issue.
I had also pressure tested the whole system.
Turns out I had a cracked head that wouldn't show up until I had to quickly back out of high rev's.
It was odd, but I finally figured it out.
Went down to a 8psi cap, still happened.
I know the owner of an auto radiator shop and would watch him pressure test them to 30psi.
Electrolysis wasn't the issue.
I had also pressure tested the whole system.
Turns out I had a cracked head that wouldn't show up until I had to quickly back out of high rev's.
It was odd, but I finally figured it out.
Trending Topics
Thread Starter
|
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Thread Starter
|
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
I used to blow up heatercores all the time. (like 16 of them)
Went down to a 8psi cap, still happened.
I know the owner of an auto radiator shop and would watch him pressure test them to 30psi.
Electrolysis wasn't the issue.
I had also pressure tested the whole system.
Turns out I had a cracked head that wouldn't show up until I had to quickly back out of high rev's.
It was odd, but I finally figured it out.
Went down to a 8psi cap, still happened.
I know the owner of an auto radiator shop and would watch him pressure test them to 30psi.
Electrolysis wasn't the issue.
I had also pressure tested the whole system.
Turns out I had a cracked head that wouldn't show up until I had to quickly back out of high rev's.
It was odd, but I finally figured it out.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
But some of my heater cores were so expanded I actually had to pry them out of the heater box.
There was no corrosion or other signs of them having weeped.
The radiator cap never came open, not even with an 8 lb. cap.
I soldered a spade terminal to the header tank and plugged a ground wire to it.
I tried a flow restriction ahead of it.
I got on a first name basis with the owner of the radiator shop, and he must have lost his pants providing me warranty replacements.
Fixed cracked head, problem went away...
Posting Guru
Joined: Jan 2004
Posts: 2,403
Likes: 4
From: Charlestown, RI
It was a half-assed repair, because I didn't really care about the car, but I soldered a wire onto one of the hose fittings before I put the hoses on, and fastened the other end to the factory firewall ground.
Thread
Thread Starter
Forum
Replies
Last Post
vanceboroguy
1948 - 1956 F1, F100 & Larger F-Series Trucks
12
Nov 24, 2014 09:09 AM
dohc_chump
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
27
Sep 28, 2010 03:04 PM
Mudman
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
7
Mar 25, 2007 05:08 AM
FordCrazy1970
Cooling, Heating, Ventilation & A/C
13
Sep 5, 2005 11:41 AM
