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Strange temp behaviour 

 

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 Post subject: Strange temp behaviour
Posted: Sun May 04, 2014 11:24 pm 
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Age: 46

Posts: 12

Joined: 15th Aug 2013

Ride: 1966 Mustang

Location: Mandurah
WA, Australia

Hi guys,
I have an EL 5.0 windsor (efi) in a 66 mustang.
I have transplanted the whole lot - and the ecu, aircon, thermofan control etc are all as Ford intended.

When I am driving along, temp sits beautifully on 192f - almost the exact opening of the thermostat.
However, when I turn on the aircon - the temp drops down to 140

Now 2 questions -
Is 140 too cold for the old girl ?
How can I be running below my thermostat opening temp ?

Cheers
Dave
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 Post subject: Re: Strange temp behaviour
Posted: Sun May 04, 2014 11:32 pm 
Getting Side Ways
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Age: 34

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Joined: 27th Dec 2011

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Ride: ef falcon futura

Power: 154 rwkw

Location: Koo Wee Rup
VIC, Australia

thermostat isn't stuck open a bit is it? with a/c on the fans should be on which would cool it down a bit

 

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 Post subject: Re: Strange temp behaviour
Posted: Sun May 04, 2014 11:41 pm 
Fordmods Newbie
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Age: 46

Posts: 12

Joined: 15th Aug 2013

Ride: 1966 Mustang

Location: Mandurah
WA, Australia

Sorry - should have said ...
First thing I did was change the thermostat for a new genuine ford one.
Same behavior...
Cheers
Dave
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 Post subject: Re: Strange temp behaviour
Posted: Mon May 05, 2014 12:12 am 
Getting Side Ways
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Age: 41

Posts: 4629

Joined: 23rd Nov 2006

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Ride: 5.0 AU's and 5.0 Maverick

Power: 139 rwkw

Location: Sydney West
NSW, Australia

Possibly an earth fault somewhere affecting the guage?

 

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 Post subject: Re: Strange temp behaviour
Posted: Mon May 05, 2014 12:21 am 
Fordmods Newbie
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Age: 46

Posts: 12

Joined: 15th Aug 2013

Ride: 1966 Mustang

Location: Mandurah
WA, Australia

Great idea matt.
The gauge is a separate powered one. I'll have to run a temp gun on it.
Cheers
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