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Username Post: Alternator fan is hot        (Topic#365147)
Denver56BelAir 
Senior Member
Posts: 557
Denver56BelAir
Loc: Parker, Colorado
Reg: 01-11-05
05-08-21 11:11 AM - Post#2819493    

My car has been sitting for a few hours. I tried to start the car up and noticed it won't stay running. After checking in the hood I noticed the alternator fan is extremely hot. The engine hasn't been running long enough to be a bad bearing or friction from the belt. Could there possibly be a short? The rest of the alternator casing is not hot. The engine is not hot.

I do have a kill switch to the battery I shut off all the time when the car is not running. Perhaps when I turn on the power to the there is an electrical drain due to the alternator. The battery has strong cranking power.

Paul
Parker, Colorado
56 BelAir Post, T56, 327, 4:11, Astro custom chrome steel wheels,
http://tinyurl.com/56belair


 


acardon 
Ultra Senior Member
Posts: 11479

Loc: DFW TEXAS
Reg: 03-25-05
05-08-21 11:50 AM - Post#2819495    
    In response to Denver56BelAir

Yes, it could be a short in the alternator. Take the big power lead off the alternator and see if it still gets hot.

Don
66 Corvair (driving)
57 2dr HT (driving)
56 2dr HT (waiting to be restored)


 
Denver56BelAir 
Senior Member
Posts: 557
Denver56BelAir
Loc: Parker, Colorado
Reg: 01-11-05
05-08-21 12:05 PM - Post#2819496    
    In response to acardon

Perhaps the alternator fan has always been hot, perhaps there has always been a short. Not sure if it affecting anything besides getting hot.

I found out why my car is having trouble staying started. It's the accelerator pump.

Paul
Parker, Colorado
56 BelAir Post, T56, 327, 4:11, Astro custom chrome steel wheels,
http://tinyurl.com/56belair


 
Denver56BelAir 
Senior Member
Posts: 557
Denver56BelAir
Loc: Parker, Colorado
Reg: 01-11-05
05-08-21 01:01 PM - Post#2819497    
    In response to Denver56BelAir

Can I reuse my same carburetor gasket if there was no damage to it when I took it apart?



Paul
Parker, Colorado
56 BelAir Post, T56, 327, 4:11, Astro custom chrome steel wheels,
http://tinyurl.com/56belair


 
wagonman100 
Site Ambassador
Posts: 15244

Loc: Baltimore, MD
Reg: 11-27-04
05-08-21 02:23 PM - Post#2819498    
    In response to Denver56BelAir

  • Denver56BelAir Said:
Can I reuse my same carburetor gasket if there was no damage to it when I took it apart?





It should not pose any problems.


Jay
Friends don’t let friends drive Fords.

1999 Silverado Z71 4X4 extra-cab short bed
1983 Malibu Fauxmad - tubbed
1978 El Camino Kustomized
1972 Monte Carlo
1957 210 handyman wagon
1957 Nomad sport wagon
1957 Cameo Carrier


 
55MAS 
Senior Member
Posts: 1586

Loc: North Coast, USA
Reg: 12-19-01
05-09-21 06:22 AM - Post#2819546    
    In response to Denver56BelAir

  • Denver56BelAir Said:
Can I reuse my same carburetor gasket if there was no damage to it when I took it apart?





Standard practice.



 
YOUNG57 
Frequent Contributor
Posts: 1322

Loc: Tennessee
Reg: 12-06-10
05-10-21 06:15 AM - Post#2819625    
    In response to Denver56BelAir

Did we figure out why the alternator fan is hot?



 
GreatNorthWoods 
"6th Year" Silver Supporting Member
Posts: 1287
GreatNorthWoods
Age: 79
Loc: Littleton, New Hampshire,...
Reg: 03-31-02
05-11-21 02:56 AM - Post#2819676    
    In response to Denver56BelAir

Has to be an internal short of some kind. Did you try disconnecting the BAT wire as suggested? If it no longer heats up after removing that wire I would replace the alternator.

Vern

1953 Chevy Belair Sport Coupe - 355 Chevy V8, 700-R4, 4-wheel disc brakes, Ididit column, cruise/tilt,'59 Vette Steering Wheel, A/C

1930 DeSoto Business Coupe- 350 Chevy V8, EFI, 4-wheel disc brakes, Wire Wheels, TH400, S-10 Rear, A/C


 


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