no heat
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Joined: Oct 2012
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no heat
I have a 85 Ranger with a 2.3L engine. I'm not getting any heat. The temperature gauge never moves off of C, except when stuck in stop & go traffic. Even then it doesn't come up much. I tried to fix this last year by putting in a new thermostat, but it didn't help. Any ideas?
Posting Guru
Joined: Mar 2005
Posts: 1,533
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From: Dexter, MI
Is the upper radiator hose cols, luke warm, fairly warm or hot? If the temp is anything except hot,you may need to flush the cooling system.
How many miles are on the truck? Have you followed the regular maintenance schedule? What is the color of the coolant? Is it rusty colored?
If the truck has a lot of miles on it, you may need a new water pump.
Let us know what you find out.
How many miles are on the truck? Have you followed the regular maintenance schedule? What is the color of the coolant? Is it rusty colored?
If the truck has a lot of miles on it, you may need a new water pump.
Let us know what you find out.
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New User
Joined: Oct 2012
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Drained the coolant and replaced the thermostat after flushing the system until it ran clear today. The antifreeze was all rusty, totally brown and only recognizable as antifreeze by the smell. The truck has 130,000 or so miles on it. After a run of about 15 miles on the freeway, the temp gauge still barely moved off of the C. This was with the radiator blocked with a piece of cardboard! It still puts out very little heat compared to what it used to. All of the hoses are hot to the touch.
Cargo Master
Joined: Oct 2010
Posts: 2,762
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From: barton city mi
How about the hoses, supply and return on your heater core. The supply should be close to same temp as your rad hoses. Supply will be a bit warmer than return if heater core has flow through it. If a large difference, heater core may be plugged, or maybe mixing valve is not open.
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Joined: Aug 2010
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I agree with the previous two responses to your situation. I have a vintage Ranger who had the same problem. Nasty rusty coolant that never quite ran clear no matter how many times I flushed the system. Pull the Heater core and run water through one of the pipes and you will flush a ton of muddy/rust out of it. Do this with the core out of the vehicle of course, and keep an eye out for water leaking in the passenger floorboards after the job is done. You will have wonderful heat again providing you don't have a problem with the blender door. Heater cores aren't expensive and are pretty easy to replace yourself. (In this vehicle!) Good luck!
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