The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 12-30-2012, 09:58 PM   #1
72step
Registered User
 
72step's Avatar
 
Join Date: Nov 2000
Location: chimayo, nm, usa
Posts: 898
Heater not warming

I recently got my 65 C10 running. Long story short, I installed the original 230 on there after being rebuilt with all new parts. New water pump, thermostat, hoses, radiator etc. I drove it yesterday to make a dump run and the heater would just not heat right. It was about 10 degrees outside but I warmed up the truck for a while and everything. It should of heated. The blower motor works great, just only luke warm at best warmth. Any ideas?
72step is offline   Reply With Quote
Old 12-30-2012, 10:29 PM   #2
Big Fenders
Registered User
 
Join Date: Mar 2008
Location: Tucson Arizona
Posts: 264
Re: Heater not warming

If you installed a 180 degree or higher thermostat you should have heat.
Make sure your heater [water] lines are unrestructed with a blower you said works..
These heater are very basic so you should be able to see the problem..
Bob
Big Fenders is offline   Reply With Quote
Old 12-30-2012, 10:38 PM   #3
rs74
Senior Member
 
rs74's Avatar
 
Join Date: Jun 2010
Location: Illinois
Posts: 2,957
Re: Heater not warming

Are the both hoses to the heater core very warm. May need to flush out the heater core. Even though it is a new thermostat, you might want to make sure it is opening.
rs74 is offline   Reply With Quote
Old 12-30-2012, 11:09 PM   #4
72step
Registered User
 
72step's Avatar
 
Join Date: Nov 2000
Location: chimayo, nm, usa
Posts: 898
Re: Heater not warming

Thanks for the ideas. It could be the core could be full of crud as the truck did sit for about 15 years. All the heater and radiator hoses are brand new and un restricted as far as I know. Unless I installed the thermostat upside down if that is even possible? The spring goes down right?
72step is offline   Reply With Quote
Old 12-30-2012, 11:18 PM   #5
rs74
Senior Member
 
rs74's Avatar
 
Join Date: Jun 2010
Location: Illinois
Posts: 2,957
Re: Heater not warming

Quote:
Originally Posted by 72step View Post
Thanks for the ideas. It could be the core could be full of crud as the truck did sit for about 15 years. All the heater and radiator hoses are brand new and un restricted as far as I know. Unless I installed the thermostat upside down if that is even possible? The spring goes down right?
Lol! Yeah spring down. With it sitting that long and if the heater core ends were not closed off with tape or something it is a good chance that bees or something has crawled in there and made a nest.

Take both heater hoses off the engine and flush the core out both ways real good. I usually take my garden hose sprayer that has a tapered end on it and hold it tight against the core nipple and let it rip. You can just run water through it but it might not dislodge some stuff as good as a little pressure would. Just my thoughts anyway.
rs74 is offline   Reply With Quote
Old 12-30-2012, 11:25 PM   #6
72step
Registered User
 
72step's Avatar
 
Join Date: Nov 2000
Location: chimayo, nm, usa
Posts: 898
Re: Heater not warming

I'll try that out as soon as we get a day at least a few degrees above freezing lol. Thanks!
72step is offline   Reply With Quote
Old 12-31-2012, 12:39 AM   #7
KJSR
Registered User
 
KJSR's Avatar
 
Join Date: Aug 2012
Location: Tooele, Utah
Posts: 327
Re: Heater not warming

It was real cold here the other day (15 or so) and I had the same issue (would not heat). Ended up it was just not warm enough. Did you drive it or give up when you didn't get heat?
__________________
1936 Chevrolet 1/2t
1964 Chevrolet C10
1964 Chevrolet C10 (sons)
1965 Chevrolet K10 Suburban
1969 Chevrolet C10
1937 Plymouth P4
KJSR is offline   Reply With Quote
Old 12-31-2012, 12:55 AM   #8
dracko
Registered User
 
dracko's Avatar
 
Join Date: Jan 2010
Location: Regina, SK
Posts: 804
Re: Heater not warming

It gets down to -40F here and my heater gets plenty hot. I also run a 190 thermostat though. Cardboard over the radiator will help the truck heat up a little faster, cut a circle out in the center for some air movement and just keep an eye on your temp gauge.

Both in/out heater hoses should be equally hot.
dracko is offline   Reply With Quote
Old 12-31-2012, 12:58 AM   #9
72step
Registered User
 
72step's Avatar
 
Join Date: Nov 2000
Location: chimayo, nm, usa
Posts: 898
Re: Heater not warming

Well, I warmed it up for like 15 minutes then I drove the 6 miles one way to the trash station and back. It never did warm up much. I tried with the heater control both all the way in and all the way out. I also have a drivers side vent that I have to hold with my foot to keep closed so that didn't make matters any better. How could I fix that vent to stay closed?
72step is offline   Reply With Quote
Old 12-31-2012, 03:56 AM   #10
donthekawguy
Registered User
 
donthekawguy's Avatar
 
Join Date: Aug 2012
Location: Rathdrum ID
Posts: 1,129
Re: Heater not warming

Make sure the fresh air vent is closed also. It's the one in the heater box that brings in fresh air from the cowl. The cable might be broken and the vent could be open letting too much cold air in. A quick fix for the vent by your foot would be cut a piece of cardboard out that you can cover the hole with. If you can't get it to stay in the hole you could duct tape it to the wall until spring. It aint pretty buy it keeps the cold air off your leg.
__________________
66 shorty
donthekawguy is offline   Reply With Quote
Old 12-31-2012, 05:57 AM   #11
72step
Registered User
 
72step's Avatar
 
Join Date: Nov 2000
Location: chimayo, nm, usa
Posts: 898
Re: Heater not warming

Quote:
Originally Posted by donthekawguy View Post
Make sure the fresh air vent is closed also. It's the one in the heater box that brings in fresh air from the cowl. The cable might be broken and the vent could be open letting too much cold air in. A quick fix for the vent by your foot would be cut a piece of cardboard out that you can cover the hole with. If you can't get it to stay in the hole you could duct tape it to the wall until spring. It aint pretty buy it keeps the cold air off your leg.
Thanks but is there a more permanent fix?
Posted via Mobile Device
72step is offline   Reply With Quote
Old 12-31-2012, 07:32 AM   #12
tincan1966
Registered User
 
tincan1966's Avatar
 
Join Date: Oct 2010
Location: Independence,KS
Posts: 1,477
Re: Heater not warming

What was the engine temp when you were driving? If the engine wasn't at a normal operating temp, you won't have much heat.
tincan1966 is offline   Reply With Quote
Old 12-31-2012, 07:35 AM   #13
72step
Registered User
 
72step's Avatar
 
Join Date: Nov 2000
Location: chimayo, nm, usa
Posts: 898
Re: Heater not warming

Quote:
Originally Posted by tincan1966 View Post
What was the engine temp when you were driving? If the engine wasn't at a normal operating temp, you won't have much heat.
I dont know. I
My temp gauge isnt working. I think i need a new sensor asall my other gauges work.
Posted via Mobile Device
72step is offline   Reply With Quote
Old 12-31-2012, 07:42 AM   #14
tincan1966
Registered User
 
tincan1966's Avatar
 
Join Date: Oct 2010
Location: Independence,KS
Posts: 1,477
Re: Heater not warming

That will be the key to the heater working.

Flushing the heater core would be a good plan, anyway, since you have all the other components new, you can keep the crud out of them.

I would try putting a piece of cardboard in front of the radiator, as mentioned and drive it, if the heat is better, then the engine isn't warming up- not a big problem, actually very common on these trucks.

BUT a prioity is to fix the temp gauge- especially with a new engine.
tincan1966 is offline   Reply With Quote
Old 12-31-2012, 12:27 PM   #15
72step
Registered User
 
72step's Avatar
 
Join Date: Nov 2000
Location: chimayo, nm, usa
Posts: 898
Re: Heater not warming

Quote:
Originally Posted by tincan1966 View Post
That will be the key to the heater working.

Flushing the heater core would be a good plan, anyway, since you have all the other components new, you can keep the crud out of them.

I would try putting a piece of cardboard in front of the radiator, as mentioned and drive it, if the heat is better, then the engine isn't warming up- not a big problem, actually very common on these trucks.

BUT a prioity is to fix the temp gauge- especially with a new engine.
I agree. I plan on starting by replacing the sensor on the thermostat. Is there any other thing it could be? Everything used to work on this truck before.
72step is offline   Reply With Quote
Old 12-31-2012, 01:40 PM   #16
ChevyFreak60
Registered User
 
ChevyFreak60's Avatar
 
Join Date: Oct 2011
Location: Nambe, New Mexico
Posts: 407
Re: Heater not warming

Hey brotha I see you got you truck running!! Hows everything?
__________________
1960 Chevy Stepside 2wd
1966 Chevy Fleetside 2wd
1965 Chevy Suburban 2wd
1965 Chevy Fleetside 4X4
1960 Chevy Fleetside BBW 2wd
ChevyFreak60 is offline   Reply With Quote
Old 12-31-2012, 01:43 PM   #17
72step
Registered User
 
72step's Avatar
 
Join Date: Nov 2000
Location: chimayo, nm, usa
Posts: 898
Re: Heater not warming

Quote:
Originally Posted by ChevyFreak60 View Post
Hey brotha I see you got you truck running!! Hows everything?
Doing good, trying to stay outta the cold. Yeah got it running. Just trying to work out a few minor things. How are your projects coming along?
72step is offline   Reply With Quote
Old 12-31-2012, 01:50 PM   #18
1963c-10
Registered User
 
1963c-10's Avatar
 
Join Date: Nov 2011
Location: fayetteville nc
Posts: 10,338
Re: Heater not warming

For the manual vents...try adjusting the bracket that the handle goes through. If you slide the bracket (2 bolts) up a hair, it should put a little friction on the handle keeping it closed or opened in summer. Also...not uncommon for the gaskets to wear out on the vents causing them to become looser. Id try the bracket adjustment 1st though as the gaskets are a PITA to replace.
__________________
1963 Short bed step side SBW 427 big block and borg warner T-16 HD 3 speed manual
http://67-72chevytrucks.com/vboard/s...d.php?t=519869
1963 Short bed fleetside BBW 348 1st gen big block w/Powerglide
http://67-72chevytrucks.com/vboard/s...d.php?t=619024
1964 Short bed trailer
1963c-10 is offline   Reply With Quote
Old 12-31-2012, 01:54 PM   #19
72step
Registered User
 
72step's Avatar
 
Join Date: Nov 2000
Location: chimayo, nm, usa
Posts: 898
Re: Heater not warming

Quote:
Originally Posted by 1963c-10 View Post
For the manual vents...try adjusting the bracket that the handle goes through. If you slide the bracket (2 bolts) up a hair, it should put a little friction on the handle keeping it closed or opened in summer. Also...not uncommon for the gaskets to wear out on the vents causing them to become looser. Id try the bracket adjustment 1st though as the gaskets are a PITA to replace.

Hey thanks, it appears that a little friction is what it needs more than anything else. The Vent loop handle is not making any contact with the other part it goes through. I will try that. Thanks!
72step is offline   Reply With Quote
Old 12-31-2012, 01:56 PM   #20
ChevyFreak60
Registered User
 
ChevyFreak60's Avatar
 
Join Date: Oct 2011
Location: Nambe, New Mexico
Posts: 407
Re: Heater not warming

Theyre doing good bro, I drive my blue 65 almost everyday to work and the stepside just chills at home lol. Good luck with getting your heater going.
__________________
1960 Chevy Stepside 2wd
1966 Chevy Fleetside 2wd
1965 Chevy Suburban 2wd
1965 Chevy Fleetside 4X4
1960 Chevy Fleetside BBW 2wd
ChevyFreak60 is offline   Reply With Quote
Old 12-31-2012, 02:07 PM   #21
72step
Registered User
 
72step's Avatar
 
Join Date: Nov 2000
Location: chimayo, nm, usa
Posts: 898
Re: Heater not warming

Quote:
Originally Posted by ChevyFreak60 View Post
Theyre doing good bro, I drive my blue 65 almost everyday to work and the stepside just chills at home lol. Good luck with getting your heater going.
Blue 65 huh? I'm thinking and I can't remember seeing it on the road. Is it dark or light? I drive through your neighborhood into Santa Fe every day.
72step is offline   Reply With Quote
Old 12-31-2012, 02:23 PM   #22
ChevyFreak60
Registered User
 
ChevyFreak60's Avatar
 
Join Date: Oct 2011
Location: Nambe, New Mexico
Posts: 407
Re: Heater not warming

Name:  image.jpg
Views: 168
Size:  40.0 KB
Quote:
Originally Posted by 72step View Post
Blue 65 huh? I'm thinking and I can't remember seeing it on the road. Is it dark or light? I drive through your neighborhood into Santa Fe every day.
Posted via Mobile Device
Posted via Mobile Device
__________________
1960 Chevy Stepside 2wd
1966 Chevy Fleetside 2wd
1965 Chevy Suburban 2wd
1965 Chevy Fleetside 4X4
1960 Chevy Fleetside BBW 2wd
ChevyFreak60 is offline   Reply With Quote
Old 12-31-2012, 02:29 PM   #23
72step
Registered User
 
72step's Avatar
 
Join Date: Nov 2000
Location: chimayo, nm, usa
Posts: 898
Re: Heater not warming

Quote:
Originally Posted by ChevyFreak60 View Post
Attachment 1033758
Posted via Mobile Device
Posted via Mobile Device
Man that's a nice rig! Original 4x4? I sure can't really say I remember seeing that on the road. 60-66 4x4's are pretty rare actually.
72step is offline   Reply With Quote
Old 12-31-2012, 02:39 PM   #24
Hx16457
Registered User
 
Hx16457's Avatar
 
Join Date: Sep 2012
Location: Lawton Oklahoma
Posts: 308
Re: Heater not warming

Man;
I like the rig, right down to the All American Gun Rack in the rear window! Only thing missing from that Pic is a 30-06!
Love it!
__________________
People who make excuses didn't want to do it in the first place!
http://s1326.photobucket.com/albums/...cpZZ1QQtppZZ16
Hx16457 is offline   Reply With Quote
Old 12-31-2012, 02:57 PM   #25
ChevyFreak60
Registered User
 
ChevyFreak60's Avatar
 
Join Date: Oct 2011
Location: Nambe, New Mexico
Posts: 407
Re: Heater not warming

LOL thanks guys!! OG 4x4 isn't working right now I'm thinking maybe its some bad hubs.
__________________
1960 Chevy Stepside 2wd
1966 Chevy Fleetside 2wd
1965 Chevy Suburban 2wd
1965 Chevy Fleetside 4X4
1960 Chevy Fleetside BBW 2wd
ChevyFreak60 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
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

Forum Jump


All times are GMT -4. The time now is 06:01 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com