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  #1  
Old 12-02-2010, 04:46 PM
theflyingmac theflyingmac is offline
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Default NO HEAT NO Air blending and blower works wide open only help!!

I have a 95 ranger super and I have two problems. ONE is last week I had heat now it just all of a sudden stopped working. The hoses are hot and the box in the engine compartment that is next to the blower motor (heater core?) is cold.

TWO before I lost heat my blend switch would not work. GUESSING my servo went out or doors broke because i replaced the switch.

The AC would work on MAX AC ONLY all others was strait hot air even with compressor kickin on and off on just ac or defrost.


SO my question is should i start with the blend door to see if its broke or the motors gone bad or should i pull the core first.

ALSO my blower will only work on high the number 4 setting. BUT i pulled the resister at the bottom of the heater core (itch to get to) and all the elements are intact. with a power tester and flipping through the speeds I only get power to the BIG coil which is high speed. Replace the control switch on dash for that also. SO What now?
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Old 12-02-2010, 04:51 PM
FireRanger FireRanger is offline
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Default Re: NO HEAT NO Air blending and blower works wide open only help!!

Your blend door is broken. That is what is what would cause having full heat or max ac only.

The heater core is under the dash, not under the hood near the blower. The box next to the blower is for the AC and it shouldn't be hot.

There is a vac operated valve that shuts off the hot water to the heater core in Max AC and off. If this is stuck closed, it will not allow any heat. It is easily bypassed or you can ram a screwdriver in it to force it open again.

Regarding the blower speed, you'll just have to follow the wires looking for a fault.
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How to: Aux light wiring, relays, & fuses
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Old 12-02-2010, 04:55 PM
theflyingmac theflyingmac is offline
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Default Re: NO HEAT NO Air blending and blower works wide open only help!!

you dont happen to have info with detailed instructions on how to get locate and then remove or trouble shoot that blend door do ya? with it not working its going to be hard for me to locate on my own. first timer.
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Old 12-02-2010, 04:58 PM
FireRanger FireRanger is offline
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Default Re: NO HEAT NO Air blending and blower works wide open only help!!

Google ford blend door. You'll find big pictures and instructions. It's a common failure.
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2003 Edge 4.0 4wd

How to: Aux light wiring, relays, & fuses
Info: 300+ intake threads here on FRF
Info: HID Projectors
How To: NO HEAT Troubleshooting Guide
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Old 05-21-2011, 10:24 AM
duke4life0331 duke4life0331 is offline
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Default Re: NO HEAT NO Air blending and blower works wide open only help!!

my ac i have trouble shot the heat and air temp is good the prob. is the air isnt blowing hard enough to reach cab, HELP asap, in el paso tx in army it is too hot
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Old 05-21-2011, 03:14 PM
FireRanger FireRanger is offline
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Default Re: NO HEAT NO Air blending and blower works wide open only help!!

Quote:
Originally Posted by duke4life0331 View Post
my ac i have trouble shot the heat and air temp is good the prob. is the air isnt blowing hard enough to reach cab, HELP asap, in el paso tx in army it is too hot
Can you try to explain what you have checked and what you are experiencing a little more clearly. Not trying to be a dick, but I can't understand any of that.
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2003 Edge 4.0 4wd

How to: Aux light wiring, relays, & fuses
Info: 300+ intake threads here on FRF
Info: HID Projectors
How To: NO HEAT Troubleshooting Guide
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