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Engine Temp Problem

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Location: Boise, ID

Engine Temp Problem

Post #1 by embergloP51 » Wed Oct 01, 2014 3:05 pm

Hey all,

As winter is coming, and my 66 Mustang is my DD, I'm trying to get my heater sorted. Everything is working fine, but my engine won't warm up. Has anybody else had this problem?

I've tried everything I can think of to get the engine running hotter but nothing helps. So far I've: changed my thermostat, changed spark plugs, flushed the heater core and block and radiator, and blocked off the airflow to the radiator.

Blocking off the airflow to the radiator is the only thing that has made any difference at all. Even then it takes at least 30 minutes of revving pretty high to get the heater core to warm up.

Any suggestions on what else I can try to make it run hotter?

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Re: Engine Temp Problem

Post #2 by powerband » Wed Oct 01, 2014 7:03 pm

... is it the engine or the heater not getting hot?, check your heater hoses to and from heater coil, if one gets hot and one does not'. it may be partially blocked.

Just took a trip up through Vermont with my '63 amd hooked up heater - DEFROSTER for first time. Heater core was OK but remains (? :? ) in heater box needed cleaning. Short cut instead of removing heater was hole-sawed' 2" access ports for a vacuum in the fiberglas heater coil plenum under glove box.

have fun
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Re: Engine Temp Problem

Post #3 by embergloP51 » Thu Oct 02, 2014 2:59 pm

Thanks powerband,

I think both hoses are getting warm. I flushed the core and hoses and block and radiator so I don't think there's a blockage anywhere. When I seal the grill off the engine warms up some and the heater starts blowing kind of warm air. I don't think it gets nearly as warm as it should be.

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Re: Engine Temp Problem

Post #4 by bubba22349 » Thu Oct 02, 2014 3:19 pm

You might check to see if your heater hoses are reversed the heater won't work as good if they are not hooked up (or routed) in the correct way. Good luck :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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Re: Engine Temp Problem

Post #5 by Soldmy66 » Thu Oct 02, 2014 4:13 pm

I had the same conditions several years ago.

I just THOUGHT there were no blockages - when in reality it turned out the heater core was a mess.

And, yes, I (too) had flushed everything.

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Re: Engine Temp Problem

Post #6 by chad » Tue Jul 31, 2018 8:37 am

1st & cheepest is timing probs.
Timed wrong can get hot.
Bubba has a great post (several times) on base , initial timing (& tune).
Following it will get U to a 'pinging' situation. @ that point U just 'turn it back' a lill by ear.

Let's C if we can find his guidelines...
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. (413) 259-1749

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