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NLW73
Barcelona


Joined: 27 May 2014
Posts: 1398
Location: Yateley


PostPosted: Mon Dec 31, 2018 10:01 am    Post subject: Smoke from alternator after cleaning car!! Horrid smell Reply with quote

Folks urgent ask ..just cleaning car and noticed a burning smell..opened engine lid and smoke coming from alternator area.

Has stopped now but bit worrying anyone had that before??

Car starts and runs so not sure if I have fubarred the alternator or just some water hitting electrics?

Should I unplug the battery as worried about leaving it now??
Thanks nw
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Luddite
Silverstone


Joined: 18 Dec 2018
Posts: 145
Location: Scotland


PostPosted: Mon Dec 31, 2018 4:04 pm    Post subject: Reply with quote

Jeez, thought you would have had the benefit of a reply by now... It is years since I worked on a Porsche and have little to no knowledge of modern car circuitry or how much if any re-programming might be needed if a battery is disconnected but my advice.. 50 yrs a spark... is to disconnect the earth lead at the battery and seek professional advice... If you have AA, RAC, or other backup then perhaps worth giving them a call..? if not there may be a mobile auto electrician in your area... but disconnect the battery for sure..

Hope DeMort picks up on this.

Good luck.
 
  
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deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6184
Location: Brighton


PostPosted: Mon Dec 31, 2018 4:32 pm    Post subject: Reply with quote

First off sorry for the late reply .. im never online in the mornings .

I assume you have the battery disconnected now ?

Did water get into the alternator ?

Car started and ran but was it charging the battery ?

Ive only seen this once and it was after an alternator replacement .. the main power lead was fitted into the wrong slot .. there are 2 and an easy mistake .. this in turn made it slightly touch the engine block causing the lead to melt.

Water in the alternator could in theory do the same but it would need a fair bit in there and ive seen rather a lot of cars washed but never this so atm im unconvinced.

Acrid burning smell .. thats plastic melting so main power lead or internal to the alternator.

With out seeing the car im afraid i will have to go with the safe option .. a garage or yourself needs to remove the alternator and have a good look at the leads .


There is No fuse on the main power lead .. its about 1cm squared of copper and direct to the battery .. very unsafe if it does short out .. hence im going with get it checked out .
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neil_911
Monza


Joined: 04 Dec 2016
Posts: 173
Location: Doncaster


PostPosted: Mon Dec 31, 2018 6:27 pm    Post subject: Reply with quote

Just water on the multi-rib belt?

Mine sometimes squeals if I've been cleaning with a pressure washer and waters got under there.
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NLW73
Barcelona


Joined: 27 May 2014
Posts: 1398
Location: Yateley


PostPosted: Tue Jan 01, 2019 4:42 pm    Post subject: Reply with quote

thanks for the replies.

i think the alternator has just toasted itself as I now have the warning light on the dash saying battery charging unit error so am guessing its fubarred itself

its probably the brushes have gone

the car was not running when it went and started smoking so could not be belt.
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Suzuka


Joined: 11 Jun 2015
Posts: 1143



PostPosted: Tue Jan 01, 2019 7:15 pm    Post subject: Reply with quote

Sounds like you have fried the electrics on the alternator..... not nice! Take alternator off and send for repairs....
 
  
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