high temps...bad thermostat?
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Joined: Oct 2005
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high temps...bad thermostat?
Hey all, I'm thinking of getting a '94 E320 w/ 79k on it. The only thing holding me back is that the car runs rather hot. The temp needle reaches just shy of the 120 mark when just sitting in traffic. I took only a quick glance under the hood to investigate. Here's what I found: there is quite a bit of pressure in the overflow tank, the cooling fans don't have much of an effect on temp and the biggest tell tale for me is that of the three hoses going into the thermostat housing, only one has pressure. The other 2 are completely soft. Does this sound like a stuck thermostat to you guys? Hopefully it won't be too big of an issue. Thanks in advance...
-Tom
'95 M3 (track car/daily)
'94 Miata (track rat)
-Tom
'95 M3 (track car/daily)
'94 Miata (track rat)
Junior Member
Joined: Apr 2005
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From: Peru
G - 55 AMG, E 320 Coupe Sportline, C 230 kompressor
gooood car
i got a 1994 E 320 coupe sportline and let me tell you that is a fine car. Good engine and a really fun ride. The problem may be caused by the heat sensor, its usual after 11 years. I don't think it could be something significant if you feel the car runs ok but just in case you wouldn't lose anything by checking it. And believe me, this is a great car
MBWorld Fanatic!
Joined: Mar 2004
Posts: 2,529
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From: Irvine, CA
2016 AMG C63s
Originally Posted by ebennz
all merc temps will spike sitting at a light or in traffic...
m119's engines do run hot.
do a "search" on m119 problems at ALLthe m.b. forums
research before you buy
a neglected car might cost you your *** in repairs
m119's engines do run hot.
do a "search" on m119 problems at ALLthe m.b. forums
research before you buy
a neglected car might cost you your *** in repairs
i would check:
the thermostat
the water pump
the radiator (maybe its clogged)
the heater core
keep in mind these engines do run hot especially if it is HOT outside. if it is cold outside they dont run that hot. if it is running hot and its say 70 or below outside you need to take your care in. if it gets too hot it will blow a head gasket.
to check to see if you have a blown headgasket which you might if you are getting back flow into the bottle do this:
1) remove radiator cap
2) turn on your car and warm it up
3) now step on the brake firmly
4) put the car in drive AND HOLD ONTO THE BRAKE
5) give the car gas and keep it that way while trying NOT to burn the tires off the rim
if the water starts shooting out of your overflow bottle you are the proud owner of a blown head gasket.
Senior Member
Joined: May 2005
Posts: 366
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hey eric,
thanks for that guide... would do the check when i've got the chance
just want to make sure.. you remove the radiator cap, and the water would shoot out of the bottle (the one where you add coolant in?) if the gasket is blown?
thanks
thanks for that guide... would do the check when i've got the chance
just want to make sure.. you remove the radiator cap, and the water would shoot out of the bottle (the one where you add coolant in?) if the gasket is blown?
thanks
MBWorld Fanatic!
Joined: Mar 2004
Posts: 2,529
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From: Irvine, CA
2016 AMG C63s
Originally Posted by jeffreyli86
hey eric,
thanks for that guide... would do the check when i've got the chance
just want to make sure.. you remove the radiator cap, and the water would shoot out of the bottle (the one where you add coolant in?) if the gasket is blown?
thanks
thanks for that guide... would do the check when i've got the chance
just want to make sure.. you remove the radiator cap, and the water would shoot out of the bottle (the one where you add coolant in?) if the gasket is blown?
thanks
Senior Member
Joined: May 2005
Posts: 366
Likes: 1
Originally Posted by AMG_Eric
yes and make sure you are loading up the engine. it wont do it at idle in neutral.
but i thought, putting the car in Drive with both brakes and gas applied, would put strain on the tranny and maybe cause premature wear?
i did that quite a few times at the traffic lights just to get the quickest launch speed
i have an underpowered car 
MBWorld Fanatic!
Joined: Mar 2004
Posts: 2,529
Likes: 4
From: Irvine, CA
2016 AMG C63s
Originally Posted by jeffreyli86
thanks once again..
but i thought, putting the car in Drive with both brakes and gas applied, would put strain on the tranny and maybe cause premature wear?
i did that quite a few times at the traffic lights just to get the quickest launch speed i have an underpowered car
but i thought, putting the car in Drive with both brakes and gas applied, would put strain on the tranny and maybe cause premature wear?
i did that quite a few times at the traffic lights just to get the quickest launch speed
i have an underpowered car Trending Topics
Almost a Member!
Joined: Aug 2005
Posts: 65
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From: Seattle, WA
1992 300e
My car did the same thing a little while after I got it, I noticed it had an Aftermarket radiator cap. Replaced it with an OE one and temps are now fine. Idles all day with no overheating.
HTH,
Ron
HTH,
Ron
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