Helpful ReplyWinter slumber wake up.....Earth issue

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jellytott
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jellytott PCGB Member
2018/03/07 14:30:38 (permalink)

Winter slumber wake up.....Earth issue

So the snows gone no salt on the roads... so Snow joke.....Fired up the 944S after the winter layup took her out to Region 21 meet at the Black Horse pub in Chesham Bucks last night, looks like I've developed an earth issue as I found out when switching from "Dipped to main beams" or turning on the "Fogs/spot lights" also when "Rad fan trips in" it kills the ECU and radio for a split second and recovers quickly? So anything switching on by the looks of it drawing with a large current draw blips the ECU and radio.
So I'm early stages of chasing an earthing corrosion issue? or a duff alternator? (Voltage regulator pack) as always grateful if anyone has been there before.
Finally, any recommendations where in the Buckinghamshire area (will consider others) getting my existing Alternator rebuilt.
 
Regards and as always thanks in advance,
 
John 
944Turbo
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Re: Winter slumber wake up.....Earth issue 2018/03/08 21:45:22 (permalink)
Might be worth getting a multimeter on the battery (DC volts) and checking around the earth points (Ohms), a cheap multimeter might save you a few pounds later,
Tony

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jellytott
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Re: Winter slumber wake up.....Earth issue 2018/03/09 11:36:08 (permalink)
Thanks Tony,
I have the kit to check these sort of things out....I just always think the worse with these earthing issues, I've come across this before when earth points become a 10's of ohms and the earth path then take a totally path to earth with bazaar symptoms. 
In fact, I seen a fault with applying a foot brake making the headlights come on too on a friends car, we've all followed the odd car with a duff earth with the indicators flashing the side lights/brakes when the brakes are applied.
 
At less with these old technology electrics we have a fighting chance verses modern cars with multiplex control systems that just about controls everything on them.
 
John
post edited by jellytott - 2018/03/09 12:18:43
jellytott
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Re: Winter slumber wake up.....Earth issue 2018/03/31 16:51:51 (permalink)
Fingers crossed...
 
Main -ve battery earth point in boot cleaned (I have removed the inline Battery isolator switch as a precaution), front engine bay/Bulkhead earth point and lastly the Fan earthing point front left strut too, have manage to source some dielectric grease to apply, strange how the picture looked huge when it arrived was tiny  !! read the quantity size!!
PSH
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Re: Winter slumber wake up.....Earth issue 2018/03/31 18:14:58 (permalink)
Hi John
 
Chesham isn't to far from me, are non club members welcome or is that taboo?
 
Pete

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Frenchy
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Re: Winter slumber wake up.....Earth issue 2018/03/31 19:59:59 (permalink) ☄ Helpfulby PSH 2018/03/31 21:06:54
Pete, you have a 944 never taboo fella, all about the love, club or no club.

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jellytott
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Re: Winter slumber wake up.....Earth issue 2018/04/16 03:50:52 (permalink)
Sorry Pete....missed the hint about non members. Im over at Gt Missenden
 
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