my heat doesnt work!
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wHiTe kNiGhT
Joined: Oct 2002
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From: ct
my heat doesnt work!
ok the fans work and are just shooting out chilling air, so damn cold here now. i relay on the heat from the shifter, sux ***. i think its the valve that lets the coolent in. how to i fix this? and is it hard to get to because its under that dash. i havent looked yet but im assuming it is.
ps and i believe its the heater core.
ps and i believe its the heater core.
Former Moderator. RIP Icemark.
Joined: Apr 2001
Posts: 25,896
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From: Rohnert Park CA
Do you hear the motor above the driver foot move when you slide the heater controls from cold to warm???
You should hear it very easy with the fan off, key on and engine not running.
If you don't, then the problem is not the heater core, but the air mix motor or the Logicon.
I will have more rebuilt Logicons available this weekend on my website.
You should hear it very easy with the fan off, key on and engine not running.
If you don't, then the problem is not the heater core, but the air mix motor or the Logicon.
I will have more rebuilt Logicons available this weekend on my website.
Former Moderator. RIP Icemark.
Joined: Apr 2001
Posts: 25,896
Likes: 24
From: Rohnert Park CA
No, the fans have nothing to do with what I was asking. That is why I said:
Again does the air mix motor move when you slide the logicon air temp slider from side to side. The air mix motor is the motor that controls the hot or cold and is above the accellerator pedal.
Turn your key to the on position, and move the slider back and forth. Can you hear the air mix motor moving???
You should hear it very easy with the fan off, key on and engine not running.
Turn your key to the on position, and move the slider back and forth. Can you hear the air mix motor moving???
vrmmmmm click vrmmmmmm click. like a little motor (a large AIR MIX flap moving. like Icemark said. engine off, key "ON" Move heater slider back/fourth. also press logicon buttons one by one. you'll hear a motor moving
-Markus
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-Markus
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Former Moderator. RIP Icemark.
Joined: Apr 2001
Posts: 25,896
Likes: 24
From: Rohnert Park CA
Then either the air mix motor or the Logicon is bad. Your original guess of the heater core having a problem would have nothing to do with it at this point.
If the air mix is bad, it will take the logicon with it.
I have posted at least 100 times on how to test the air mix motor. If you had searched on your problem you would find it But here it is again
:
if the air mix motor checks out okay, then it is probably the Logicon that has failed or the fuse for the heat/climate control in the drivers kick panel.
If the air mix is bad, it will take the logicon with it.
I have posted at least 100 times on how to test the air mix motor. If you had searched on your problem you would find it But here it is again
:
So, there are three plugs at the Logicon. Two that plug directly into the back, and the third plug that runs off into the dash and plugs in above the air mix motor in the dash.
We are going to test a couple wires at that third harness.
So unplug that third harness. You now have a car side and a Logicon side. We are going to be testing on the car side of the plug, not the Logicon side.
We need to find the Green w/White stripe wire and the solid Yellow wire in that plug.
Putting your multi-meter on the wires, check for resistance (ohm). Resistance should be between 17 and 21 ohms at 70 degrees F.
If that checks out fine, then jumper 12 volts onto the Yellow wire, and ground onto the Green/white. The motor should move all the way over to the hot position.
If you reverse the two, (12volts on the Grn/wht and ground on the yellow) the motor should move all the way over to the cold position.
You only want to put the 12Volts on the wire until the motor gets to the hot or cold side. Remove the 12 volts after its there.
We are going to test a couple wires at that third harness.
So unplug that third harness. You now have a car side and a Logicon side. We are going to be testing on the car side of the plug, not the Logicon side.
We need to find the Green w/White stripe wire and the solid Yellow wire in that plug.
Putting your multi-meter on the wires, check for resistance (ohm). Resistance should be between 17 and 21 ohms at 70 degrees F.
If that checks out fine, then jumper 12 volts onto the Yellow wire, and ground onto the Green/white. The motor should move all the way over to the hot position.
If you reverse the two, (12volts on the Grn/wht and ground on the yellow) the motor should move all the way over to the cold position.
You only want to put the 12Volts on the wire until the motor gets to the hot or cold side. Remove the 12 volts after its there.
Thread Starter
wHiTe kNiGhT
Joined: Oct 2002
Posts: 1,393
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From: ct
well i didnt know what it was. i didnt know if it was that valve that lets in coolent or the thing that you guys are talking about.
but i will next time, thanks for your help. i will try this most likely tomorrow. i will let you know what i find.
but i will next time, thanks for your help. i will try this most likely tomorrow. i will let you know what i find.
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