Need help
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New User
Joined: Nov 2013
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Need help
Hi guys. I just bought my 1970 F-100 sport custom 2 days ago. I'm new to these trucks and don't know much about them. The heat stopped working. About every second or so the truck clunks. It's hard to find 3rd gear (it's a 4 speed) anybody know what those things might be?
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 83
From: NorCal
Congrats on your new ownership.
Besides turning on the ignition and putting gasoline into the tank, how much have you tried to learn about your truck? You have to start somewhere and posting your symptoms without any troubleshooting on your part is, well, rather lame.
Have you looked under the hood to see if the heater valve cable slipped off? What about checking the heater cable at the controls? Still connected? What about the coolant level?
"Clunks". Under what circumstances does it happen? Shifting into gear? Turning? Stopping? Do you feel the clunk or can you just hear it?
Gears... check the lubrication level? What transmission do you have? Does it happen all the time or only when hot or cold?
I'm busting your ballz because YOU have to have some skin in the game and to be your own detective. Be inquisitive but be smart about it... posting your very vague questions without any background info or actual work on your part does no one any good except us waste time guessing at your issues.
Besides turning on the ignition and putting gasoline into the tank, how much have you tried to learn about your truck? You have to start somewhere and posting your symptoms without any troubleshooting on your part is, well, rather lame.
Have you looked under the hood to see if the heater valve cable slipped off? What about checking the heater cable at the controls? Still connected? What about the coolant level?
"Clunks". Under what circumstances does it happen? Shifting into gear? Turning? Stopping? Do you feel the clunk or can you just hear it?
Gears... check the lubrication level? What transmission do you have? Does it happen all the time or only when hot or cold?
I'm busting your ballz because YOU have to have some skin in the game and to be your own detective. Be inquisitive but be smart about it... posting your very vague questions without any background info or actual work on your part does no one any good except us waste time guessing at your issues.
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New User
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Well the clunk i can hear and feel when i'm driving down the road. I'm new to all of this and I don't know where a lot of it is. I'm going to pick up a Chilton's catalog for this year hopefully soon. The heater was working just fine and then it started just blowing out cold air. Maybe it's the core or maybe one of the hoses are clogged. I'm just seeing if anyone is having the same issues or has had them in the past. The transmission was originally an automatic but was converted to a manual. It has a Mercury 390 V8 in her.
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 83
From: NorCal
Crawl (eegads?) under your truck and wiggle the driveshaft to check for loose or worn u-joints. In fact, grab and wiggle everything under there to check for integrity. It might just be the exhaust system rubbing against something.
Check the heater valve and cable I mentioned above. That does of course require opening the hood...
Learning curve ahead!
Check the heater valve and cable I mentioned above. That does of course require opening the hood...
Learning curve ahead!
Lead Driver
Joined: Dec 2012
Posts: 7,877
Likes: 49
From: Tennessee
First thing to check on the heat issue ,,, Coolant level . I see it often , low coolant no heat .
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Lead Driver
Joined: Dec 2012
Posts: 7,877
Likes: 49
From: Tennessee
Yes it may . If coolant is too low , not enough to properly flow through the heater core . Can be low enough to not heat , and not overheat . Get the radiator fixed or replaced . A slow leak can turn into a fast leak quickly !
Elder User
Joined: Nov 2009
Posts: 891
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From: Mayfield, KY
also, if heater control valve is still connected to dash then the valve may be stopped up, heater core could be clogged. I would recommend unhooking heater hoses and running hose water through them to see if you can dislodge anything.......
Lead Driver
Joined: Dec 2012
Posts: 7,877
Likes: 49
From: Tennessee
