Good afternoon, I have been having a terrible time tracing down why my 04 Crown Vic blower motor does not work. Here is what I have checked:
Blower motor, good. Checked it by hard wiring to the battery.
Fuse, good
Relay, good
Wire from fuse to relay, good power
Wire after relay, NO POWER
Resistor, good
Blower motor switch, good
All battery positive connections are tight with no corrosion
All grounds on passenger kick panel and passenger front fender, good. I checked these ground by connecting other power sources to them and the wires.
This leads me to believe that it is a power problem somewhere.
Any ideas? Thanks.
Blower motor issues.
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hotrod ford
- Blue Oval Guru
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Blower motor issues.
1971 Sport Custom SWB: 360/C6 3.00
1965 Ford Falcon 4Dr: Inline 170 3sp
1965 Ford Falcon 4Dr: Inline 170 3sp
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sargentrs
- 100% FORDified!
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Re: Blower motor issues.
Sounds like a bad relay. There are a number of "how to test a 12v relay" threads on the web or your local parts store probably has a plug in tester.
Randy
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1987 F-150 XLT Lariat, 5.0/C6 auto.
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1987 F-150 XLT Lariat, 5.0/C6 auto.
-
hotrod ford
- Blue Oval Guru
- Posts: 1121
- Joined: Wed Apr 25, 2007 12:09 am
Re: Blower motor issues.
Not the relay, I took one out of my 05 F150 and still nothing.
1971 Sport Custom SWB: 360/C6 3.00
1965 Ford Falcon 4Dr: Inline 170 3sp
1965 Ford Falcon 4Dr: Inline 170 3sp
-
sargentrs
- 100% FORDified!
- Posts: 9866
- Joined: Fri Jun 22, 2007 9:30 am
- Location: Georgia, Jasper
Re: Blower motor issues.
Then I don't have a clue. Modern vehicle circuitry makes me cring. But I'll be following your problem to learn more. Sorry I couldn't help.
Randy
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1987 F-150 XLT Lariat, 5.0/C6 auto.
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1987 F-150 XLT Lariat, 5.0/C6 auto.
-
hotrod ford
- Blue Oval Guru
- Posts: 1121
- Joined: Wed Apr 25, 2007 12:09 am
Re: Blower motor issues.
Ok, here is an update. I just connected the outgoing pwr terminal of the vent selector switch to another pwr source and the blower motor will work in all speeds. Am I losing pwr somewhere or is this a ground issue?
1971 Sport Custom SWB: 360/C6 3.00
1965 Ford Falcon 4Dr: Inline 170 3sp
1965 Ford Falcon 4Dr: Inline 170 3sp
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tac
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- Location: Dallas/Ft. Worth
Re: Blower motor issues.
Power. It would only be a ground issue if you got it working when you connect the blower ground to an alternate (ground) source.