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Blower Motor Problem

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Old Jun 11, 2015 | 11:51 AM
  #1  
Mustangking1's Avatar
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Blower Motor Problem

The other day I was driving my 78 f250 with factory a/c and I parked it and came back 20 minutes later and the a/c will only blow 1 speed. If i mess with the switch enough it will bump up alittle faster but not the full speed it used to have.

I am kind of thinking the blower motor has given up but I am looking for your thoughts on it.
 
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Old Jun 11, 2015 | 05:24 PM
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77&79F250
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Yes sounds like a bad switch... easy fix.... blower motor, not so much.

NORTH COUNTRY SPECIALTIES ®

1979 F100 Air Conditioning

1973-79 BRONCO HEATER CORE - WITHOUT A/C - BRASS | Laurel Mountain Mustang

Ford HEATER AND A/C - 57-79 Truck, 61-67 Econoline list - CG Ford Parts
 
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Old Jun 11, 2015 | 05:33 PM
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Originally Posted by Mustangking1
The other day I was driving my 78 f250 with factory a/c and I parked it and came back 20 minutes later and the a/c will only blow 1 speed.

If i mess with the switch enough it will bump up a little faster but not the full speed it used to have.

I am kind of thinking the blower motor has given up but I am looking for your thoughts on it.
It's not the blower motor, it's either a defective wiper switch or the blower motor resistor.

D3TZ-19706-A .. Blower Motor Resistor / Obsolete

1973/79 F100/350 & 1978/79 Bronco with factory installed integral A/C

WESLEY OBSOLETE PARTS in Liberty KY has 3 = 606-787-5293.

NOS PARTS LTD in Waxahachie TX has 4 = 972-937-2201.

GREEN SALES CO. in Cincinnati OH has 4 = 800-543-4959.
------------------------------------------------------------------
Two different wiper switches: With or without Intermittent Wipers.

D0OZ-17A553-A .. Wiper Switch-Use without Intermittent Wipers (Motorcraft SW-896) / Marked: D0OB-17A553-A or D / Obsolete

1970/71 Fairlane/Torino/Montego / 1970/72 Maverick/Comet / 1973/79 F100/350 / 1978/79 Bronco.

GREEN SALES CO. has 2.

WESLEY OBSOLETE PARTS has 6.

NOS PARTS LTD has 7.
--------------------------
D1OZ-17A553-A .. Wiper Switch-Use with Intermittent Wipers (Motorcraft SW-1010) / Marked: D1OB-17A553-AA / Obsolete

1971 Fairlane/Torino/Montego / 1973/79 F100/350 / 1978/79 Bronco.

WESLEY OBSOLETE PARTS has 2.

GREEN SALES CO. has 7.
 
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Old Jun 11, 2015 | 10:21 PM
  #4  
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Mustangking1
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Weird thing is that tonight I was driving down a bumpy road and suddenly I could use all the different speeds like normal.

It seems like maybe I have a loose plug somewhere.
 
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