[20v] '91 CQ Temp Gauge - when should we be alarmed?

[Christopher Gharibo]

Do you think I should accept the gauge at the thin line before the 2 dots as normal considering the 90-100 degree temps outside?

> On Jul 3, 2014, at 8:45 AM, Peter Schulz <p.schulz at verizon.net> wrote:
> 
> Chris:
> 
> when it starts moving about the two dots around the one o'clock position.
> Make sure the radiator fan wiring is in good shape, especially near the connector - if the wiring is tight, i.e. no slack or strain relief, you are looking at a dead fan or potential under hood fire at some point since the fan IS NOT fused. (BTDT on my first CQ and ditto for Royal's Grey Nag 90 20v.
> 
> Hold old is the radiator?  is it in good shape, have you have flushed it?
> all the stock radiator shrouding in place?
> 
> -Peter
> 
> 
>> On Jul 1, 2014, at 6:36 PM, Christopher Gharibo wrote:
>> 
>> Here is the obligatory summer temp gauge question on an old car. I have a '91
>> CQ with 210k miles.
>> 
>> The temperature vacillates about the old usual thick line at all times,
>> except
>> when the ambient temperature is 90 degrees and the AC is on. These
>> circumstances put the temperature needle past the usual thick line to just
>> before the 1st thin line. If I shut the AC off at this time, the needle backs
>> off to the thick line again. The hi/lo radiator fan is cycling correctly. 
>> 
>> Does everything seem to be operating normally? At what point in the gauge
>> should I be alarmed?
>> 
>> Any help would be appreciated.
>> 
>> 
>> 
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> 
> -Peter Schulz
> Chelmsford Ma, USA
> http://www.naaclub.org/
> 
> 1995.5 S6 Avant Emerald/Ecru
> 1995.5 S6 Avant Silver/Platinum
> 1993 S4 Silver/Black (parts car)
> 1993 S4 Black/Black
> 1994 S4 Silver/Black
> 1991 CQ Silver/Black
> 1991 CQ Silver/Platinum (eS2 recipient) 
> 
> 
> 
> 
>