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Electrics issues 

 

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 Post subject: Electrics issues
Posted: Wed Apr 12, 2006 10:16 pm 
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Hey all,

Just wondering if anyone can help me out with an electrics issue Im having at the moment... okay..

First of all its a 91 EB Fairmont V8.

Has digital speedo, tacho, clock, climate control etc.

When the head lights are on and I am driving at night, at some point the dash lights(all of them) including the climate control display & clock flash on intermittently or stop altogether. When I turn off the head lights the dash displays will flash intermittently and there is a kind of weird clicking noise(similar to an indicator). Lastly, when the interior light is switched on the dash display lights up fine and stays lit up.

I dont know if its related but the air con/climate control seems to go up and down quite a bit too, but I thought it may be just adjusting the temp.

Can anyone give me some advice on this or had a similar problem?

Any help appreciated

Cheers
Pat
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Posted: Wed Apr 12, 2006 10:31 pm 
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u might want to check the relays. and see if any of them are stuffed. if not one of the positive cables at ur battery might be corroded and needs to be cut, restripped and then put back on. if not there might be a short somewhere behind the dash?

on my EA when i turned on the headlights my car just turned off because there was a positive power cable that was hanging on one copper strand from a 4 guage wire. after rewiring it worked like a charm.

hope that helped

phong =P~

 

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Posted: Wed Apr 12, 2006 10:39 pm 
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Thanks for that phongus.

From memory the battery terminals did look a bit corroded. I'll have a closer inspection tomorrow.

Hopefully I'll get it sorted soon...

Cheers
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Posted: Wed Apr 12, 2006 10:43 pm 
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no problems and good luck =D

 

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phongus = Post whore 2006
EL XR6 motor, EL ECU + J3 chip, WADE 1673 Camshaft, 3" S/S intake, Pacy 4480, 2.5" Hi flow cat, 2.5" Lukey exhaust.
Max Power = 144.6 rwkw (03/05/2008)

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Posted: Fri Apr 14, 2006 2:51 pm 
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The battery seems fine. I replaced all the fuses today and the problem still occurs...

Looks like it might be a job for an auto electrician :roll:
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Posted: Fri Apr 14, 2006 3:41 pm 
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Pat5L wrote:
The battery seems fine. I replaced all the fuses today and the problem still occurs...

Looks like it might be a job for an auto electrician :roll:


What about the *relays*?

 

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Posted: Fri Apr 14, 2006 4:40 pm 
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No I didnt check the relays. What is the best method to check them?

Should I check the relays in the interior fuse compartment or are there more in the engine bay? :?

Cheers
Pat
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Posted: Fri Apr 14, 2006 5:10 pm 
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Relays should be located near the battery, under a black plastic cover.

Pull 'em out, check relay holders and the relays themselves for corrosion, fouling, etc.

I had a problem with my auto a while ago, where I'd turn my high beams on and the auto would switch to LHM. It sucked. I pulled out all the relays and put them back in again, as well as cleaning all the terminals (battery included) and everything was back to normal again!

Incidentally, I stopped popping globes too.

Hopefully it's just a dirty relay connection for you.

-Dave-

 

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Posted: Fri Apr 14, 2006 8:13 pm 
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if it wasnt the battery then yeah check ur relays. thats all i can really think off

good luck

 

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phongus = Post whore 2006
EL XR6 motor, EL ECU + J3 chip, WADE 1673 Camshaft, 3" S/S intake, Pacy 4480, 2.5" Hi flow cat, 2.5" Lukey exhaust.
Max Power = 144.6 rwkw (03/05/2008)

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Posted: Fri Apr 14, 2006 10:54 pm 
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Cheers guys, I'll have another look in the morning and see how I go... I hope its an easy fix :)
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Posted: Sat Apr 15, 2006 12:33 pm 
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Sounds like a break in the electric circuit somewhere. Hvae fun.
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Posted: Sat Apr 15, 2006 1:34 pm 
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cHECK ALL THE earth CONNECTIONS ALSO AS A BAD EARTH CAUSES ALL THE ABOVE MENTIONED PROBLEMS ON e SERIES FALCONS :shock: :P

 

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Posted: Sat Apr 15, 2006 5:33 pm 
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OK. I have checked and cleaned all the relays today.

The box that they sit in was a bit filthy so I cleaned it out also. Once I put them back in I tested the lights, same thing happened. Im starting to think it could be more like a wiring/circuit fault.

Would it be worth replacing the relays as a safety measure as well as checking for a bad earth? :roll:

Thanks
Pat
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Posted: Mon Apr 17, 2006 1:38 pm 
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Check your wiring first before replacing things.

My thermofans died on the weekend, and today will be the first chance I get to check them out. Before I replace anything, I'm going to rewire it straight to the battery, because I suspect it's the ignition wire which is stuffed (somewhere... the wire runs all the way into the cabin to a ciggy lighter, and it's wired up hobo style)

The fuse seems fine (first thing I checked), albeit bloody hot :S

I'm assuming it's either an earthing fault (it could be), or the thermoswitch itself, or the ignition wire. I doubt its the thermofans.

But all this is speculation, I gotta get off my a** and check it out!

Sorry to hijack your thread mate ;)

-Dave-

 

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Posted: Mon Apr 17, 2006 8:10 pm 
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Its all related Ghia5L :)

I just wish I knew more when it comes to working with electronics , wiring etc. :?
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