Running hot

[David Vanden]

Well, the cooling fan has 5 blades.  I am wondering if the problem might be
a resistor, because it always seems to be on high.  I am waiting to get
pulled over for violating a noise ordinance or some such other bastardized
law.  Be glad you don't live in Florida.  The cops here do what they want.

On a more serious note I will have to explore the resistor concept.

On Mon, Jun 1, 2015 at 9:21 PM, David Vanden <dvanden46 at gmail.com> wrote:

> There seem to be varying opinions on whether that fuel pump is acceptable
> or not.  I have got it idling at about 900 so it seems to be working.  I
> replaced the radiator fan sending unit just recently so that is not the
> problem.
>
> I am replacing the coolant temperature sensor.  It rests on the side of
> the engine right at/before the coolant hose inlet on the bottom side.  It
> is directly above the location of the thermostat.
>
> I am wondering if the fan is indeed  only functioning in high speed
> because it is so loud and obnoxious.  But since the radiator  fan sender is
> less than a year old and the fan did that since I put it in as did the old
> one, I don't think that is the culprit.
>
> It does seem like the fan comes on too often.  I am hoping that getting
> the radiator cleaned will help.
>
> On Mon, 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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>>>
>>>
>