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Car Forum / Ford / Ford Trucks / November 2006heater
I got a ford f-150(1992) and well not the heater, but the fan itself will not turn on unless it is on high. I put it on low and medium and nothing happens, but when I put it on high it always turns on. I'm curious does anyone know what this could be? it is a manual tranny with a 6cyl 4.9L. On Wed, 15 Nov 2006 03:21:17 -0800, mitsurugi3644 rearranged some electrons to form: > I got a ford f-150(1992) and well not the heater, but the fan itself > will not turn on unless it is on high. I put it on low and medium and > nothing happens, but when I put it on high it always turns on. I'm > curious does anyone know what this could be? it is a manual tranny with > a 6cyl 4.9L. Blower motor resistor needs to be replaced.  SignatureDavid M (dmacchiarolo) http://home.triad.rr.com/redsled T/S 53 sled351 Linux 2.4.18-14 has been up 48 days 19:44 >I got a ford f-150(1992) and well not the > heater, but the fan itself will not turn on [quoted text clipped - 4 lines] > could be? it is a manual tranny with a > 6cyl 4.9L. >Blower motor resistor needs to be > replaced. The blower motor speeds are controlled by the resistor pak which is controlling the ground to the motor. Having only High speed means the motor has a direct connection to ground. The lower speeds use higher resistance because of the different values in the resistor pak. The pak is located in the blower-motor housing on the passenger side in the engine compartment. You will see some wiring to the housing and they plug into the resistor pak. The part is about $12 and available in parts stores. Failure is a common fault with this part. Dave S(Texas) ya I replaced the resistor and it fixed my problem, but let me tell you that getting that old resistor off and the connector apart took my almost 2 hours. I had to cut everything off, because the old resistor and connectors were rusted together. I did get it apart, but what should have been a 5 mins job took me 2 hours, because I didn't want to cut the wires. After that ordeal everything works fine and thanks for the info. > ya I replaced the resistor and it fixed my problem, but let me tell you > that getting that old resistor off and the connector apart took my [quoted text clipped - 3 lines] > cut the wires. After that ordeal everything works fine and thanks for > the info. Where the pack located - engine compartment or under dash? Got a ranger w/ low fan speed out. >> ya I replaced the resistor and it fixed my problem, but let me tell you >> that getting that old resistor off and the connector apart took my [quoted text clipped - 6 lines] > Where the pack located - engine compartment or under dash? Got a > ranger w/ low fan speed out. Usually under the dash,look on the air ducts for a rectangular port with several wires coming out of it. The resistor is mounted in the air duct so it will be cooled by air movement. SignatureDavid M (dmacchiarolo) http://home.triad.rr.com/redsled T/S 53 sled351 Linux 2.4.18-14 has been up 2 days 4:16 > > Where the pack located - engine compartment or under dash? Got a > > ranger w/ low fan speed out. > > Usually under the dash,look on the air ducts > for a rectangular port with several wires coming out of it. The resistor > is mounted in the air duct so it will be cooled by air movement. Thanks, Dave. Got a Haynes and will also look if it's included in there. ACTUALLY, they are usually on the engine side of the heater case next to the blower motor. steve >> ya I replaced the resistor and it fixed my problem, but let me tell you >> that getting that old resistor off and the connector apart took my [quoted text clipped - 6 lines] > Where the pack located - engine compartment or under dash? Got a > ranger w/ low fan speed out. could be the switch, could be the resistor. steve >I got a ford f-150(1992) and well not the heater, but the fan itself > will not turn on unless it is on high. I put it on low and medium and > nothing happens, but when I put it on high it always turns on. I'm > curious does anyone know what this could be? it is a manual tranny with > a 6cyl 4.9L. |
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