[Vwdiesel] Vwdiesel Digest, Vol 62, Issue 8
Terry Briggs
vbriggs at stny.rr.com
Sat Dec 6 04:20:14 PST 2008
Over the years I've noticed major differences during cold weather and
heat output. Most noticeable on my old '86 Golf of course that one ha a
head gasket issue and had oil all through the cooling system but it
never overheated { it did apparently with the previous owner} Cardboard
in the grill worked very well to help my partially clogged heater core.
My rabbit seemed to like about 80% of the radiator covered once the
temps stayed down past about 35 degrees. I'm not sure about the jetta
yet, I haven't cardboarded the rad yet. I did find it started fairly
easy in very cold weather last night though. It was a balmy 13 out and
it started right up for the most part. It did take about another mile
before I got decent heat compared to when it's just a bit warmer out.
Terry
On Dec 6, 2008, at 12:11 AM, LBaird119 at aol.com wrote:
> In a message dated 12/5/2008 8:08:00 PM Pacific Standard Time,
> lug1970 at yahoo.com writes:
>
>> I am pretty sure that the iq is not quite right because of the
>> decrease in
>> fuel milage around town, but on the plus side I will get up to temp
>> by the
>> time I have travelled the 10 miles across town most mornings. I am
>> of the
>> opinion right now that the iq was set really low and there wasn't
>> that much heat
>> being produced, especially at temps lower then 20.
>>
>
> If you're not short on power then even if the fuel quantity is set
> low, it's not your issue. Setting the fuel screw to a lesser quantity
> (lean is irrelevant on a diesel for the most part) is for the most part
> no different than not flooring it, putting a block under the pedal,
> having too much slack in your throttle cable. Other than idle, you
> simply get less maximum fuel. Sure it's less all along but it's simply
> a sliding scale. You get a range of say 2 to 8. Turn up the screw
> and your range goes from 3 to 9 until you turn down the idle screw
> and you might get 2 back. Often you only get to 2.5 if you've gone
> for way more power. Turn the screw out and the range drops from
> 1 to 7. Turn up your idle and you now have 2 to 7. Not going
> to cause you to not get heat out of the car by itself.
> Cold weather has a HUGE effect on operating temps of these
> engines. Remember, I found out the other week that simply
> TOWING at 20mph in 2nd gear caused the pickup to put out
> close to the same heat as running it! That cold air really cools
> things down!
> The cold air and lack of operating temp can noticeably kill the mpg
> too. We've already seen a drop of 2 mpg in Dad's Passat, presumably
> from the ambient air temp because it runs at operating temp fairly
> well.
> Loren
>
>
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