no heat

Reply Subscribe

Thread Tools

Search this Thread

Dec 13, 2008 | 02:40 PM

rustee90-150

Thread Starter

Senior User

Joined: Jan 2007

Posts: 186

Likes: 1

From: watford, ontario

no heat

ok so in the summer i put a new heater core in the truck and a new water pump. the summer before that i put in a new double core rad. thay were all leaking originals . now its cold out and i have no heat in the truck the engine comes up to opp temp fine within five minutes. the heater core lines are so hot i can barley hold my hand on them the blend door works fine yet even after half hour drive the air coming out still feels cool there is alot of air coming out it blows fine and all my settings work defreost floor ect just no hot air . its a 90 f150 5spd 302 thnxs.

Dec 13, 2008 | 02:55 PM

pc_2000

Senior User

Joined: Dec 2007

Posts: 348

Likes: 1

From: Lutz, FL

Rustee
I'm having the same problem. I'll be interested to hear a solution to it as well.

Dec 13, 2008 | 03:46 PM

ac700wildcat

Senior User

Joined: Nov 2006

Posts: 242

Likes: 0

Are your heater hoses on the right connections? I seem to remember that if you put them on the wrong parts of the heater core it won't work or something?

Dec 13, 2008 | 03:58 PM

pc_2000

Senior User

Joined: Dec 2007

Posts: 348

Likes: 1

From: Lutz, FL

I know I personally check that and reversed them (they were on wrong from PO) no difference.

Dec 13, 2008 | 04:58 PM

Conanski

FTE Legend

Joined: Jun 2006

Posts: 31,930

Likes: 1,499

From: Ottawa, Ontario

You're gonna have to open up the heater box again, there is a lot of cold air getting in there from somewhere, possibly a foreign object preventing the blend door from completely closing.

Dec 13, 2008 | 08:41 PM

rustee90-150

Thread Starter

Senior User

Joined: Jan 2007

Posts: 186

Likes: 1

From: watford, ontario

i took the cover off the heater core and there was a small gap around all four edges of the heater core so i packed them with foam and tweeked the blend door now i have more heat but still not the same as it use to be im thinking its a low quality core .

Dec 14, 2008 | 02:04 AM

Xclimation

Senior User

Joined: Jan 2008

Posts: 277

Likes: 0

From: Ft. Worth, Texas

When I replaced my cooling system a few months ago, the heater hoses were completely blocked. When you say you felt the heater lines, do you mean the hoses that go to and from the heater core to the water pump? Even if they are getting hot, they can still be blocked or partially blocked. They are cheap and easy to replace.

Trending Topics

64 and 63 f100 4x4s

46

1.2k
BREAKING: Ford Drops 6.8L V8 and Standard 6.7L Power Stroke from 2027...

233

17.6k
Looking at ordering an F-250. Questions on what I should be able to get...

25

882
2025 F250 Travel Trailer WDH setup

63

3.5k
What to do with my unused spare tire?

17

473

Dec 14, 2008 | 08:37 AM

250FOREVER

Cross-Country

Joined: Nov 2005

Posts: 58

Likes: 0

From: N E Pa.

I had a leaking heater core once and replaced it with an aftermarket , no more leak but poor heat !! . Suffered with it through a few winters till it got even worse , figured the I300 just dint make alot of heat combined with with a cloging core . Replaced it again , marginal improvement !!!! and yet another winter . Then I think I read here something about aftermarket cores not heveing good flows so I replaced it yet again with a factory core , gets good heat now !!!!!!!!!!!!!!!!!

A warmer Mark