Running hot

[Cody Forbes]

PS, I do agree about the lack of need to upgrade the cooling system. It is perfectly adequate in stock form when opertating correctly. You could add the auxiliary radiator if it doesn't already have it (Huw knows more about the details of that than I do, I only have big chassis cars).

-Cody Forbes (mobile)

> On Jun 1, 2015, at 8:41 PM, Huw Powell <audi at humanspeakers.com> wrote:
> 
> You might want to test your radiator fan sender doohickey (if that's what you mean by "new temperature sensor then you're all set).
> 
> It's a two-speed fan, and "high" is pretty loud.  "Low" is not so bad, but if the sender is partly bad you might have high only.  That makes it louder, and also a bit hotter before it comes on.
> 
> The fan should almost never come on while you are moving, but idling on an 80F+ day it will cycle on and off every couple of minutes.
> 
> I'm wary of your concept of "superior", since you already put the wrong fuel pump in your car...
> 
>> On 6/1/2015 8:23 PM, David Vanden wrote:
>> It hasn't overheated.  I refuse to drive it until I at least get the
>> radiator cleaned and install the new temperature sensor.  I removed the
>> radiator from the car.  It seems to have a lot of gook inside.
>> 
>> I just liked the idea of a superior radiator because I get annoyed with
>> it not running cooler and with the cooling fan coming on so frequently.
>> I figured if there was a way to quiet the cooling fan and not be so
>> reliant on it it would be cool
>> 
>> On Mon, Jun 1, 2015 at 8:01 PM, Huw Powell <audi at humanspeakers.com
>> <mailto:audi at humanspeakers.com>> wrote:
>> 
>>    This Nissen's:
>> 
>>    http://www.partsgeek.com/catalog/1987/audi/4000_quattro/cooling_system/radiator.html
>> 
>>    is what people have been using "forever".  Direct fit, but does
>>    require a "universal" corrugated top hose since for some reason the
>>    hose nipple is a couple of inches further from the engine.
>> 
>>    I cut two original hoses and joined them with a stainless steel
>>    barbed fitting, but that's not necessary, it was just fun to do.
>>    And cheaper.
>> 
>>    I don't know if people have used the other radiator shown there.
>> 
>>    Has your car overheated yet?
>> 
>>    - Huw
>> 
>> 
>>    On 6/1/2015 6:26 PM, David Vanden wrote:
>> 
>>        This question may be perhaps rhetorical but did anyone install a
>>        Flex A
>>        Lite universal fit radiator, see significant improvement, and do
>>        so without
>>        spending a lot of money on mounting hardware?
>> 
>>        On Sun, May 31, 2015 at 11:57 PM, Andrew Buc <abuc at andrewbuc.com
>>        <mailto:abuc at andrewbuc.com>> wrote:
>> 
>>            Your 4kq is old enough that the odds are pretty good it
>>            needs a new
>>            radiator. I had the radiator on my ’87 4kq replaced 2 or 3
>>            years ago. In my
>>            case, the issue was coolant loss, not overheating (I started
>>            carrying jugs
>>            of coolant in the trunk and topping up as needed), but still.
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