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Next: Alfa Romeo White Edition
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External
Since: Apr 21, 2007
Posts: 17
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(Msg. 1) Posted: Tue Dec 16, 2008 6:09 am
Post subject: two fans by radiator not spinning
Archived from groups: rec>autos>makers>vw>watercooled (more info?)
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Hi there,
Not sure if it is due to the cold here, it is about -15 degrees
Celsius or so, but i have noticed that the two fans by my radiator are
not spinning, and I'm trying to figure out if this is a problem -
since i can only see this when the car is stopped. I drive a 2000
Golf 1.8T.
My temperature gauge isn't showing that the car is over heating,
actually it is showing that the temperature of the engine is below 90,
or the middle of the gauge. I have noticed that is i'm doing highway
driving where that is wind the temperature actually goes down about 1
unit of measure on the gauge. When i'm in the city driving around,
the temperature is in the middle of the gauge or 90.
I'm wondering, shouldn't these two fans be spinning all the time?
I don't see adverse performance or temperature inside the car nor from
the temperature gauges - and i don't remember if they use to spin in
the summer time.
Advice?
H |
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External
Since: Apr 21, 2007
Posts: 17
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(Msg. 2) Posted: Tue Dec 16, 2008 6:36 am
Post subject: Re: two fans by radiator not spinning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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| ....I'll check them with the a/c on, but I'm assuming that my engine
would be *hot* after driving it 1/2 an hour. I realize it is winter,
but still...
I'm worried that i may have a blown sensor or something, however, then
I would expect my car to overheat driving it on the highway, correct?
....maybe I'm paranoid.
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>> Stay informed about: two fans by radiator not spinning |
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External
Since: Nov 26, 2006
Posts: 187
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(Msg. 3) Posted: Tue Dec 16, 2008 7:46 am
Post subject: Re: two fans by radiator not spinning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Dec 16, 9:36 am, HT wrote:
> ...I'll check them with the a/c on, but I'm assuming that my engine
> would be *hot* after driving it 1/2 an hour. I realize it is winter,
> but still...
> I'm worried that i may have a blown sensor or something, however, then
> I would expect my car to overheat driving it on the highway, correct?
> ...maybe I'm paranoid.
It is also possible that you have a failed (open) thermostat. Under
these conditions, it will take a VERY long time for the car to heat up
to fan-trigger temperatures. Do you have good heat inside the car? Is
your mileage still good? Does your exhaust smell any? Does it seem to
be running rich?
Peter Wieck
Melrose Park, PA >> Stay informed about: two fans by radiator not spinning |
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External
Since: Apr 21, 2007
Posts: 17
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(Msg. 4) Posted: Tue Dec 16, 2008 8:00 am
Post subject: Re: two fans by radiator not spinning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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I have really good heat inside the car, and my mileage hasn't changed
(+/- my regular caught in rush hour idling)
I haven't noticed any difference in my exhaust.
Do you mean heating up the interior?
> It is also possible that you have a failed (open) thermostat. Under
> these conditions, it will take a VERY long time for the car to heat up
> to fan-trigger temperatures. Do you have good heat inside the car? Is
> your mileage still good? Does your exhaust smell any? Does it seem to
> be running rich?
>
> Peter Wieck
> Melrose Park, PA >> Stay informed about: two fans by radiator not spinning |
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External
Since: Apr 21, 2007
Posts: 17
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(Msg. 5) Posted: Tue Dec 16, 2008 8:11 am
Post subject: Re: two fans by radiator not spinning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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External
Since: Nov 29, 2004
Posts: 67
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(Msg. 6) Posted: Tue Dec 16, 2008 9:30 am
Post subject: Re: two fans by radiator not spinning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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They only spin when the temp sensor tells them to spin or if the A/C is on.
If the engine's not hot, they're not needed.
"HT" wrote in message
> Hi there,
>
> Not sure if it is due to the cold here, it is about -15 degrees
> Celsius or so, but i have noticed that the two fans by my radiator are
> not spinning, and I'm trying to figure out if this is a problem -
> since i can only see this when the car is stopped. I drive a 2000
> Golf 1.8T.
>
> My temperature gauge isn't showing that the car is over heating,
> actually it is showing that the temperature of the engine is below 90,
> or the middle of the gauge. I have noticed that is i'm doing highway
> driving where that is wind the temperature actually goes down about 1
> unit of measure on the gauge. When i'm in the city driving around,
> the temperature is in the middle of the gauge or 90.
>
> I'm wondering, shouldn't these two fans be spinning all the time?
> I don't see adverse performance or temperature inside the car nor from
> the temperature gauges - and i don't remember if they use to spin in
> the summer time.
>
> Advice?
>
> H >> Stay informed about: two fans by radiator not spinning |
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External
Since: Apr 11, 2004
Posts: 59
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(Msg. 7) Posted: Tue Dec 16, 2008 10:25 am
Post subject: Re: two fans by radiator not spinning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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They only run above a certain coolant temp. I believe it's about 95C and the
second stage at 102C. So if the engine is at 90C or less then they will not
run.
SFC
"HT" schreef in bericht
> ...I'll check them with the a/c on, but I'm assuming that my engine
> would be *hot* after driving it 1/2 an hour. I realize it is winter,
> but still...
> I'm worried that i may have a blown sensor or something, however, then
> I would expect my car to overheat driving it on the highway, correct?
> ...maybe I'm paranoid. >> Stay informed about: two fans by radiator not spinning |
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External
Since: Jul 30, 2008
Posts: 4
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(Msg. 8) Posted: Tue Dec 16, 2008 11:25 am
Post subject: Re: two fans by radiator not spinning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"HT" wrote
> ...I'll check them with the a/c on, but I'm assuming that my engine
> would be *hot* after driving it 1/2 an hour. I realize it is winter,
> but still...
Erik meant 'hot' as in 'over-heating'
Do a google, or similar, on 'thermoswitch' ;o) >> Stay informed about: two fans by radiator not spinning |
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External
Since: Oct 08, 2008
Posts: 4
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(Msg. 9) Posted: Tue Dec 16, 2008 11:28 am
Post subject: Re: two fans by radiator not spinning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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most likely not.
the fans arent absolutely necessary when driving at highway speed
"HT" wrote in message
> ...but am i safe to assume that if the temp sensor was gone, wouldn't
> my car overheat driving to work (about a 45 minute ) drive? >> Stay informed about: two fans by radiator not spinning |
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External
Since: Aug 14, 2006
Posts: 301
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(Msg. 10) Posted: Tue Dec 16, 2008 2:20 pm
Post subject: Re: two fans by radiator not spinning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Tue, 16 Dec 2008 08:11:10 -0800 (PST), HT
wrote:
>...but am i safe to assume that if the temp sensor was gone, wouldn't
>my car overheat driving to work (about a 45 minute ) drive?
How do I tell if my engine is hot? Look at your oil temp guage.
Fans are to get air moving over the radiator. Those fans to not move
as much air running full speed as passes the radiator naturally at 45
mph. Well that is my theory with no scientific method to test my
theory. If I had a wind speed indicator to mount behind the radiator
maybe I could test.
Your car is more likely to overheat stuck in traffic than while
driving at a fair speed. Of course if you have a TDI it is unlikely to
ever overheat much less get warm at idle in traffic when it is -15C. >> Stay informed about: two fans by radiator not spinning |
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External
Since: Apr 21, 2007
Posts: 17
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(Msg. 11) Posted: Fri Dec 19, 2008 6:29 am
Post subject: Re: two fans by radiator not spinning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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I just got in from checking my car, i just drove to work taking more
than an hour with a mixture of highway and stop and go traffic.
....even with the a/c on, the two fans on my 2000 VW Golf 1.8T don't
spin, however, my temperature gauge inside the car never pass 90. I
checked it when i can to a stop at work. Actually, if i turn on the
fans full blast, it goes down a knotch or two while I'm driving (with
heat on full blast). It takes about 5 minutes or so for my car to
warm up, which is normal, since is is -25 degrees Celsius here.
....you guys are saying that the fans should kick in as soon as a/c is
engaged? It the air itself gets really cold, but the fans don't
spin. ...and i'm still wondering, if they weren't kicking in,
wouldn't my car over heat eventually or at least show a temperature
higher than 90? it has never gone over 90 degrees. (this is a
canadian panel).
H >> Stay informed about: two fans by radiator not spinning |
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External
Since: Apr 21, 2007
Posts: 17
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(Msg. 12) Posted: Fri Dec 19, 2008 7:01 am
Post subject: Re: two fans by radiator not spinning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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External
Since: Aug 14, 2006
Posts: 301
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(Msg. 13) Posted: Fri Dec 19, 2008 8:16 pm
Post subject: Re: two fans by radiator not spinning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Air conditioning may not engage if it is too cold. Is the compressor
turning? No not the idler pully but the AC crankshaft.
Why do you believe an engine is going to get hot when it is cold
outside? What is your oil temp? If it is not 90C then the engine is
not hot. You can get hot water out of a gas engine but the engine is
not neccessarily hot. It is just getting heat off the head but the
rest of the engine can be relatively cold. When you put your hand on
the oil pan after driving it for an hour can you hold your hand there
for 10 minutes without pain? If the answer is yes then the engine is
not hot.
On Fri, 19 Dec 2008 06:29:06 -0800 (PST), HT
wrote:
>I just got in from checking my car, i just drove to work taking more
>than an hour with a mixture of highway and stop and go traffic.
>
>...even with the a/c on, the two fans on my 2000 VW Golf 1.8T don't
>spin, however, my temperature gauge inside the car never pass 90. I
>checked it when i can to a stop at work. Actually, if i turn on the
>fans full blast, it goes down a knotch or two while I'm driving (with
>heat on full blast). It takes about 5 minutes or so for my car to
>warm up, which is normal, since is is -25 degrees Celsius here.
>
>...you guys are saying that the fans should kick in as soon as a/c is
>engaged? It the air itself gets really cold, but the fans don't
>spin. ...and i'm still wondering, if they weren't kicking in,
>wouldn't my car over heat eventually or at least show a temperature
>higher than 90? it has never gone over 90 degrees. (this is a
>canadian panel).
>
>H >> Stay informed about: two fans by radiator not spinning |
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External
Since: Apr 11, 2004
Posts: 59
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(Msg. 14) Posted: Sat Dec 20, 2008 1:25 pm
Post subject: Re: two fans by radiator not spinning [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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No, if it's a bad thermostat then it'll take a very long time (>1h) to warm
up. I guess the only thing you could try is to block the air going to the
rad with e.g. card board.
If it still stays at 90deg then it's just too cold and it'll never overheat!
SFC
"HT" schreef in bericht
> Sounds like an open thermostat no?
> ...anyone know how much that would run at the garage?
> >> Stay informed about: two fans by radiator not spinning |
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External
Since: Sep 26, 2003
Posts: 57
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(Msg. 15) Posted: Sat Dec 20, 2008 1:25 pm
Post subject: Re: two fans by radiator not spinning [Login to view extended thread Info.]
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"SFC" wrote in message
> No, if it's a bad thermostat then it'll take a very long time (>1h) to
> warm up. I guess the only thing you could try is to block the air going to
> the rad with e.g. card board.
This is an easy way to check this, but stay with the car. I did exactly
this once for just this purpose, and got called away for something I thought
would take a few minutes. It took a lot more than a few minutes and I
barely avoided an overheating by coming back just in time.
- Bill >> Stay informed about: two fans by radiator not spinning |
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