Running hot

Mon Jun 1 18:45:12 PDT 2015

No, no  I made sure the pump was a Bosch.  I didn't want to fit it with any
other brand.

Thanks for the tip about the fan speeds and their respective noise levels.

On Mon, Jun 1, 2015 at 9:37 PM, Huw Powell <audi at humanspeakers.com> wrote:

> Ah, Cody, why didn't you correct me before I said that twice?
>
> Are you sure about the pump he bought, though?  I saw nothing about 120
> PSI in the description.  Keep in mind it was not a Bosch, but a copy,
> IIRC.  The highest pressure mentioned was 5 bar.
>
> I'm pretty sure they also use a power resistor to make the low speed, but
> the ones on the small cars don't have a reputation for burning out.  That
> said, there's no harm in testing it.
>
> - Huw
>
>
> On 6/1/2015 9:08 PM, Cody Forbes wrote:
>
>> I assure you Huw ol pal that the 044 pump is indeed proper for any CIS
>> car. There's the 040 and the 044, one being the in tank version and one
>> being the external version. They are identical in specification and rated
>> to flow at pressures exceeding CIS system pressures. Again, the in tank
>> version is the OE pump on a 5000 Turbo. A fuel pump is a fuel pump as long
>> as it will flow enough fuel at high enough pressure to let the pressure
>> regulator do its job. Flow rate is inversely proportionate to pressure (as
>> pressure goes up, flow rate goes down) so you've got to be sure it can flow
>> enough at 120psi for CIS and the 044 pump absolutely, unequivocally,
>> unquestionably, can.
>>
>>
>> On the fan noise:
>> Do these have the same big cooling fan resistor as the 5000's? I know on
>> the 5000's the resistor burns out on low speed and you end up with only
>> high speed which is very loud. Also on the 5000's there are different fan
>> options with 3, 4, and 5 blades. The more blades the quieter the fan at
>> similar flow rates. Perhaps the small chassis cars also have different
>> blade quantity options to look in to?
>>
>> -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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>>>>
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>>>>
>>>>
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>>
>>