404 overheating -- mystery solved?
Tue, 07/27/2010 - 19:47
So, I finally, after a month or so, had some time to go out and tinker
with the truck. It had been overheating badly in the ambient summer
temps.
I pulled the thermostat, then took her and ran her for about 20
minutes, mostly in 3rd and 4th gears. The engine reached 60C fairly
quickly, then slowly inched up to 80C, where it stayed stable.
I'm going to take it tomorrow and run it out a little more when it's a
little warmer to see if it still stays in a reasonable temperature
range.
Kirk Haines
German 404.1 w/ M130
Search Archives
Loading
Syndicate
User login
Who's online
There are currently 0 users and guests online.
Random Gallery Photo
|
|
|
|
|
|
My swiss 404 always ran a rock solid 82C. My manual.is at home so I am
unsure of spec. The M130 should be in the same range, and indeed the one in
my 1972 250 sedan runs consistently right about there.
I have manuals at home and can check official documentation tonight.
Kirk Haines
On Jul 31, 2010 1:28 PM, "Jack Miles" wrote:
Its been almost a year, but I think I recall the operating temperature
around 85-90*C.
- Jack Miles
On Sat, Jul 31, 2010 at 3:04 PM, wrote:
> What should the temp be on 180 66...
My truck has an M130 in it, which runs hotter than the M180 by quite a bit.
It also runs dual 14" electric cooling fans.
I will be running cooling system cleaner through it when I change the
thermostat, along with thoroughly flushing the block side of the cooling
system.
Kirk Haines
On Jul 31, 2010 7:28 PM, "Frank" wrote:
I have found it normal for my Swiss 404 with the larger cooling system to go
up to about 90C soon after a cold start, and then settle back to 80C for the
rest of the run. On extremely hot days, it may run closer to 90C steadily.
You may want to take this opportunity to run some coolant system cleaner
through your truck, since you will be draining your coolant to replace the
thermostat.
I have been known to run with no fan belt all winter, and even in the summer
for a long road trip, so I don't have to listen to the fan. The air moving
through the radiator just from road speed is enough to cool mine. I did
that on my first trip to NMMF, and did fine until traffic backed up in
Portland on I-5. Man was I looking for an exit. For those thinking about
this, don't try it if you have stop and go traffic in warm weather.
Frank in Wa.
I have wondered. I flushed the bejesus out of the radiator but not the block
yet. Since i have to open it up again to put a new thermostat in anyway i am
going to thoroughly flush the block too. Hopefully that helps to do the
trick.
Kirk Haines
On Jul 31, 2010 3:09 PM, "Jim Procter" wrote:
I wonder if you've got a blockage somewhere. Assuming the fan is running, it
should run cooler at idle than under load. If you have a blockage, then the
high revs are needed to get enough liquid through to move the heat to the
radiator.
jim
n 31/07/10 18:09, Kirk Haines wrote:
> >
> > On Wed, Jul 28, 2010 at 11:28 AM, Kirk Haines
> wrote:
> >>
> >> Yeah. Mine was o...
>
> >
Yeah. Mine was overheating to the point of boiling over. The thermostat just
wasn't opening sufficiently it appears. I will replace it and all should be
good.
On Jul 28, 2010 9:12 AM, "James Holmes" wrote:
My 404 was running a little hot with an empty trailer a few days ago. All of
the fluid levels were fine. I even checked the vent line on the overflow
from the radiator line. Mud dobbers like to build a nest and clog it. It was
fine. I ran it the next day and all was normal. The outside temps were from
101 the first day to 87 the second. The mog likes cooler days. The
thermostat is doing its job. It was just hot and it ran a little hot. Then I
foolishly over filled the reservoir and it leaked for a few minutes. All is
well now.
On Wed, Jul 28, 2010 at 11:28 AM, Kirk Haines wrote:
> Yeah. Mine was overheating to the point of boiling over. The thermostat just
> wasn't opening sufficiently it appears. I will replace it and all should be
> good.
I took it into town today to pick up a load of construction and
fencing material. It is still running without a thermostat.
Ambient temperature was about 70F when I left, and 82F on the way
home. The truck warmed up to run about 78C into town. It ran around
85C if I just sat it somewhere idling, and when I increased the engine
RPMs (increasing coolant flow), it'd drop down to 80-82C and hold
stead there in and out of town.
I have a 180F thermostat on order for it to replace the one that I
pulled. Hopefully with the new thermostat it'll warm to that 82C point
and will then just stick closely to it.
Kirk Haines
I have found it normal for my Swiss 404 with the larger cooling system to go
up to about 90C soon after a cold start, and then settle back to 80C for the
rest of the run. On extremely hot days, it may run closer to 90C steadily.
You may want to take this opportunity to run some coolant system cleaner
through your truck, since you will be draining your coolant to replace the
thermostat.
I have been known to run with no fan belt all winter, and even in the summer
for a long road trip, so I don't have to listen to the fan. The air moving
through the radiator just from road speed is enough to cool mine. I did
that on my first trip to NMMF, and did fine until traffic backed up in
Portland on I-5. Man was I looking for an exit. For those thinking about
this, don't try it if you have stop and go traffic in warm weather.
Frank in Wa.
I wonder if you've got a blockage somewhere. Assuming the fan is
running, it should run cooler at idle than under load. If you have a
blockage, then the high revs are needed to get enough liquid through to
move the heat to the radiator.
jim
n 31/07/10 18:09, Kirk Haines wrote:
> On Wed, Jul 28, 2010 at 11:28 AM, Kirk Haines wrote:
>> Yeah. Mine was overheating to the point of boiling over. The thermostat just
>> wasn't opening sufficiently it appears. I will replace it and all should be
>> good.
>
> I took it into town today to pick up a load of construction and
> fencing material. It is still running without a thermostat.
>
> Ambient temperature was about 70F when I left, and 82F on the way
> home. The truck warmed up to run about 78C into town. It ran around
> 85C if I just sat it somewhere idling, and when I increased the engine
> RPMs (increasing coolant flow), it'd drop down to 80-82C and hold
> stead there in and out of town.
>
> I have a 180F thermostat on order for it to replace the one that I
> pulled. Hopefully with the new thermostat it'll warm to that 82C point
> and will then just stick closely to it.
>
>
> Kirk Haines
>
>
What should the temp be on 180 66 404 the gauge has 40 80 100 C
Ty
Sent on the Sprint® Now Network from my BlackBerry®
Its been almost a year, but I think I recall the operating temperature
around 85-90*C.
- Jack Miles
On Sat, Jul 31, 2010 at 3:04 PM, wrote:
> What should the temp be on 180 66 404 the gauge has 40 80 100 C
> Ty
> Sent on the Sprint® Now Network from my BlackBerry®
>
>
My 404 was running a little hot with an empty trailer a few days ago. All of the fluid levels were fine. I even checked the vent line on the overflow from the radiator line. Mud dobbers like to build a nest and clog it. It was fine. I ran it the next day and all was normal. The outside temps were from 101 the first day to 87 the second. The mog likes cooler days. The thermostat is doing its job. It was just hot and it ran a little hot. Then I foolishly over filled the reservoir and it leaked for a few minutes. All is well now.