The plastic on the outside is green, same as the original.

Chris G

From: Jim Hearne 
Sent: Monday, May 16, 2016 1:57 PM
To: [email protected] 
Subject: Re: [Quantum Owners] Overheating

A third of the way up the gauge sounds very low for the fan cutting in.
What colour is the fan switch, the different colours are different 
temperatures, at least on Ford OEM parts.

Jim



From: Chris 
Sent: Friday, May 13, 2016 11:03 AM
To: mailto:[email protected] 
Subject: Re: [Quantum Owners] Overheating

Plus, the fan wasn’t kicking in when it should have so the temp just kept on 
rising. Then when it did decide to work it would bring the temp back down a bit 
until it decided not to work again (usually when going over a bump in the road).

When I idled the engine up to temp after fitting the new wire, the fan came on 
when the needle was about a third to half of the way up the gauge, which from 
the last 2 trips I did was normal running temp.

By the way, it also has a new rad, new ish heater matrix, a new water pump and 
new ish silicone hoses
I need to check the ignition timing with my new timing gun as I only did it by 
ear.

Chris G


From: Jim Hearne 
Sent: Thursday, May 12, 2016 7:12 PM
To: mailto:[email protected] 
Subject: Re: [Quantum Owners] Overheating

I hope you've fixed your problem, but....

The only earth wire from the starter is the great big black one from the engine 
block/starter to the battery.
If that had a break in it i'd also expect you to have trouble with the battery 
charging and the engine cutting out.
Also, the fan wouldn't normally be earthed to that point, though it is a 
Quantum so it's possible somebody did.
If you have intermittent starting issues it's probably the starter wire from 
the ignition switch that has the problem (Black with a Blue stripe from 
memory), quite possibly it's the round push on fitting on the end if it's 
original or a crimp connector if not.  
The stud or tab on the starter is plated steel and rusts creating an 
intermittent connection.

Also, 17 amp wire isn't really enough for the fan circuit, the fan is fused 
with a 20 amp fuse.
I would use 27 to 30 amp (3mm squared) wire for the fan circuit 

The fan should only be coming on in slow moving or stationary traffic, if it's 
overheating while moving it's something else.

Sorry,

Jim




On 12/05/2016 16:12, Chris wrote:

  My 1.6 saloon has been plagued by overheating problems for nearly a year.

  The Thermostat was playing up – so I changed it.
  The Fan switch was intermittent – see above.
  The Head gasket blew – bugger.....see above.
  The Fan switch plug disintegrated – ditto.
  The Fan was notchy – you get the idea..........

  After all that it STILL overheated alot.

  Until I had a thought........

  The Earth wire from the starter has a break in it (I know this), so that 
sometimes when I turn the key nothing happens and I have to pop the bonnet and 
wiggle the wire a bit, then try again.
  The Fans Earth connects to the same wire......Hmmm
  ‘If the Earth wire is dodgy between the Fan and the Battery, that would 
explain alot’

  I now have a New 17 amp wire running from the Fan earth to the battery.
  Yesterday, for the first time in a long time, it Didn’t overheat.
  In fact, the needle didn’t even get halfway up the gauge!

  I’m currently touching every piece of wood in the house, hoping that I have 
now Finally fixed it........

  Chris G 

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