CRV 2000 heater not warming up

1182 Views 10 Replies 6 Participants Last post by TheDarkKnight, 6 mo ago

70445

Discussion Starter · 6 mo ago

My CRV 2000 heater is not warming up the car! Temperature guage showes normal, does not overheat, just regular temperature. Problem could be thermostat, heater core somewhat plugged, or may fan/ heater activator deflector? Same temp on both drivers and passenger vents. How to figure which it is? Just replace thermostat? Help would be appreciated!

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mklaz

· #2 · 6 mo ago

When did you last check the cabin filter? It is a pain to get to in this car so it could be that it hasn't been changed and is clogged?

On mine, when the thermostat went bad it would take forever for the temp gauge to move and once it got warm would drop again if I drove over 25mph for any length of time. This would lead me towards something in your heating system and not the thermostat if your temp gauge is "normal".

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70445

Discussion Starter · #3 · 6 mo ago

mklaz said:
When did you last check the cabin filter? It is a pain to get to in this car so it could be that it hasn't been changed and is clogged?

On mine, when the thermostat went bad it would take forever for the temp gauge to move and once it got warm would drop again if I drove over 25mph for any length of time. This would lead me towards something in your heating system and not the thermostat if your temp gauge is "normal".

Good ideas! I was thinking thermostat, but maybe not! I’ve changed the canon filter, maybe # or 3 years ago.. maybe the heater core?

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JohnTaper

· #4 · 6 mo ago

I would first verify that the engine is actually warming up with a scan tool and/or a temp gun on the cylinder head. Should be at least 180 F. Cooling fans should come on around 220 F.

There is a shut off valve on heater hose that are prone to fail on hondas. Make sure it's not seized, and that it is open, opens. Download service manual if you haven't.

With the blower on and the engine warmed up you should be able to feel a difference in temperature between the inlet and outlet heater hose. If they are the same temperature I would suspect the in line valve. If it is good try flushing the heater core.

Also with the engine warm and the blower on, move the temperature from hot to cold, and back. You should feel some difference in temperature from vents. If there is no change at all in temperature i would make sure blend door actuator is working.

Probably valve in heater hose stuck closed.

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70445

Discussion Starter · #5 · 6 mo ago

Very useful info..I’ll check all those thing out! Much appreciated, Thank You!

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otto888man

· #6 · 6 mo ago

Water Valve - 2000 Honda CR-V 5 Door EX KA 4AT

Shop in the parts listing - 2000 Honda CR-V 5 Door EX KA 4AT Water Valve. Discounted prices and Hassle-Free Return on genuine Honda parts.

www.hondapartsnow.com

item 9

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70445

Discussion Starter · #7 · 6 mo ago

Oh I see it now! How would you check that to see if it’s fsulty? Thank you the info! Much appreciated.

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otto888man

· #8 · 6 mo ago

You are welcome! Try to turn to the heat position in the cabin but before that remember which position it was on as what John Taper mentioned it could be seized up.

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Carbuff2

· #9 · 6 mo ago

I've had the heater valve mentioned not fully opening, due to loose linkages.

Verify that it is opening fully before you aim the Parts Cannon.

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70445

Discussion Starter · #10 · 6 mo ago

Where can I post pic of my suspected part problem

70445 said:
Where can I post pic of my suspected part problem

How do I post a pic of the suspect part?

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TheDarkKnight

· #11 · 6 mo ago

FAQ

www.crvownersclub.com

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