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1993 civic ex Luke warm heat not getting hotter

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Old 11-12-2013, 04:58 AM
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Default 1993 civic ex Luke warm heat not getting hotter

So I recently did a headgasket, thermostat, heater control valve and flushed the core and I have luke warm heat but it wont get hotter. Engine gets to normal operating temp just wont blow hot air. Any help or insight is appreciated thanks again.
Old 11-12-2013, 10:54 AM
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Default Re: 1993 civic ex Luke warm heat not getting hotter

Did you bleed the cooling system?
Old 11-12-2013, 12:20 PM
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Default Re: 1993 civic ex Luke warm heat not getting hotter

RonJ@HT, sounds like he's on the right track. This actually happened to my old ef si when I did the complete flush when I replaced the heater core. This seems like the place to start.
Old 11-12-2013, 01:40 PM
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Default Re: 1993 civic ex Luke warm heat not getting hotter

had the same problem in my 94 coupe and could never figure it out, it was always just luke warm air. my 98 coupe works great though, gets hot in a minute. hope you figure it out
Old 11-12-2013, 01:58 PM
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Default Re: 1993 civic ex Luke warm heat not getting hotter

Thermostat might need replacing as well. If it takes a while to heat up.
Old 11-12-2013, 06:00 PM
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Default Re: 1993 civic ex Luke warm heat not getting hotter

i bled the system using a coolant buddy and there should be no air left and the tstat was replaced when i did the headgasket i doubt it would need replacing again all work was done less than 1k ago
Old 11-12-2013, 06:02 PM
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Default Re: 1993 civic ex Luke warm heat not getting hotter

Clogged heater core...
Old 11-12-2013, 06:42 PM
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Default Re: 1993 civic ex Luke warm heat not getting hotter

Originally Posted by OoAoO
i bled the system using a coolant buddy
What is this^?
Old 11-12-2013, 08:24 PM
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Default Re: 1993 civic ex Luke warm heat not getting hotter

Looks like your heater core done pooped out.
Old 11-13-2013, 01:30 PM
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Default Re: 1993 civic ex Luke warm heat not getting hotter

core flows freely and coolant buddy is the funnel on the rad tool
Old 11-13-2013, 02:56 PM
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Default Re: 1993 civic ex Luke warm heat not getting hotter

problem fixed the screw that hold the arm on the blend door motor under the dash broke and it was spinning free so when i adjusted the cable the door wasnt moving i have burning hit heat and im happier than ever
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