|
|
|
|
|
#1
06-11-2002, 05:41 PM
|
|||
|
|||
|
M119 Radiator Overheating
I have a 99 s420 with 45k miles. I thought my overheating problem was due to the cats but I replaced everything from the cats to the rear muffler and 02 sensors but still I am staying at around 100C (MOSTLY ON HIGHWAY). I have had my coolant changed at the dealer, so I think it is not my coolant/H20 ratio. The dealer performed a roar test twice and reported it stayed at 84C. Also I have had my oil pump switched out too. With my generous warranty dwindling to an end, I was wondering if my radiator is the culprit. Please post on what should I do?
Also on my 97 E320 rear door, there is some crackling noise once I it is moved and it doesnt slam good. Is the problem my door check straps. 
|
|
#5
06-14-2002, 08:35 PM
|
||||
|
||||
|
Are you sure that anyhting is really wrong?
At highway speeds with 80F temp and 80% RH using A/C, staying around 95-100C is not bad!
Check the coolant ratio for yourself and make sure it's no more than 50/50, preferably 40/60 (af/water) ratio. If you think something is still wrong, check the thermostat! Wonder what a roar test is? ROAD???
|
|
#6
06-14-2002, 09:19 PM
|
|||
|
|||
|
I would second JimF's comments. My M119 engine runs 90-100 degrees with ambient temp >80, at highway speeds. This is despite having Water Wetter, a new water pump, radiator, and thermostat, so I am PRETTY SURE the system is functioning as efficiently as it can ...
__________________
Steve '93 400E
|
|
#7
06-14-2002, 11:03 PM
|
|||
|
|||
|
The "roar" test is also known as the viscous fan test.
Based upon temperature and RPMs, the viscous fan is suppose to engage at x-degrees and y-RPM, and disengage at z-RPM. Viscous-Fan coupling airflow temp: 92-100C Safety Cut-off Fan Speed: 4500, engine RPM 3250 Also, it's called a "roar" test because if it's hot outside and in the engine-bay, once you hit about 3500 RPM the viscous fan should be engaged and you'll hear the "roar" of the fan. :-) neil 1988 360TE AMG 1993 500E Last edited by ke6dcj; 06-14-2002 at 11:10 PM.
|
 |
| Bookmarks |
|
|
Linear Mode
