Question about 1987 Mercedes-Benz 300-Class

1 Answer

On Load the working temperature rises

When I drive my MB 300d 1987 on the hills instead of working around 82 degrees the temperature rises to almost 98. Is this normal? The radiator and water pump are new. Everything works fine

Posted by on

  • abrahambecke May 11, 2010

    Thanks Jasperony for posting the solution. The fan clutch works fine, and the aux fan is coming on before it reaches 100 degrees. The cooling mix is the original Mercedes yellowish liquid in the recommended % mix. The radiator does not have a cap, The cap is in the recovery tank and the level is always right, it is not leaking or consuming any coolant liquid.

×

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 203 Answers

At 100 degrees c the aux fan will come on. Make sure that fan is working properly and also that your fan clutch is working properly.If this is happening with the a/c on there is an updated temp switch for aux fan operation on the receiver drier. It should be red in color. The temp is going to rise under different loads but that is a bit extreme in my opinion. Make sure you have a 50 50 mix of water and coolant and that the rad. cap seal is o.k. assuming the rest of your cooling system is in proper working order.

Posted on May 30, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My 2008 hhr ss temperature goes from 196 to 210 on the road. Can I drive 1001 miles? While driving the coolant system goes down and then goes up when it's parked. Is it good or bad idea?


I'm fairly sure what you described is normal operation.
The thermostat opens at 195-197 degrees and the radiator fan kicks on around 225 degrees. So the normal range is between those numbers. And the coolant tank would rise when you turn the engine off because it stops flowing.
As long as the temp stays under 220 and you are not losing coolant you should be ok.

Apr 04, 2016 | Cars & Trucks

1 Answer

My 1996 grand marquis keep overheating


there are several problem that will give this indication and your information is not comprehensive enough to make a good diagnosis
the time factor is critical as some time could be 5 minutes to 5 hours and driving is too loose as it could be at highway speeds or stop go traffic , hill work or under load
so I will give to certain conditions that will over heat the car or cause a rise in operating temperature
head gasket--check with compression test
low water level-- check at cap
faulty radiator cap--have tested
partially blocked radiator--have a flow test done
fins on cores falling off --replace radiator
overheating transmission oil--check the transmission is fully operational as high speed with out over drive in will cause a rise in temp
if in traffic --check viscous fan and fan operation if electric
if under load -check load and tyre pressures
check for brake operation- adjust hand brake to full off
run the fault codes to check air/fuel ratios and timing
check for failed cat converter-- blocked exhaust system

Jun 27, 2015 | 1996 Mercury Grand Marquis

1 Answer

Freightliner columbia wont blow heat into cab have replaced thermostats and heater core blend doors work heater core gets hot and blower works but air from vents only gets to 80 deg


The air from the heater core will be as hot as the coolant temperature of the engine. 80 Degrees is the opening temperature of the thermostat and that will be where it remains until the engine starts to work or the ambient temperature rises.
Thermostats come in a couple of different opening temperatures so check around for one that opens around 85 degrees if you want hotter air in the cab
Another point is to close the recirculating vent door to the cabin as the heater core is trying to heat fresh freezing air if it is open

Jan 09, 2015 | Cars & Trucks

1 Answer

My 01 Pontiac Montana is trying to overheat at high power


If your vehicle doesn't actually overheat, just getting hot, I think that's the normal behaviour for these cars. My 03 AWD behaves the same way. When driving uphill, especialy when towing, the temperature rises close to the red marking, but I have never experienced it overheating. I think that the temperature has to rise much over the normal driving temperature to activate the two electric fans.

Jul 15, 2014 | 2001 Pontiac Montana

1 Answer

My 2009 Peugeot 308's heating is baffling me when i drive at normal speeds say 30 and above the engine temperature gauge never rises and the heater doesnt work but when im in traffic or parked with th


Thermostat may not be working properly, hot coolant has to circulate via the heater core in order to get heat. Normally operation temperation should be 180 to 200 degrees.

Nov 21, 2013 | Peugeot 308 Cars & Trucks

1 Answer

I have Mitsubishi Montero Sport 2001. I have problems with my radiator, when go up the hills the temperature goes up, if I drive flat road it never goes up, also the hoses which are connected to the...


What kind of hill are you going up when it gets hotter? When going up hill you are putting more of a work load on the engine so it is possible for the temperature to rise. Is it getting hot to where it is over heating?

Sep 05, 2011 | Mitsubishi Montero Sport Cars & Trucks

1 Answer

How many thermoststs does the nissan nomad have


1 this being the specifications on it
Features & Benefits Quality Controlled Factory Calibration Assures Accuracy Of Opening & Closing, Regardless Of Pressure Changes. Positive Piston Heat Motor Provides Accurate Temperature Control. Sturdy Metal Construction Throughout. Attributes Depth from Flange : .82"
Design : Offset
Flange Diameter : 2.125"
Height from Flange : .91"
Jiggle Pin : Yes
Temperature Range : 195 Deg
Warranty Limited Lifetime-See Manufacturers Written Policy
Warranty PDF
Material Safety Data Sheet (MSDS) There is no MSDS for this item Application Information: 1990 Nissan Van Engines : 2.4 L 2389 CC L4 SOHC
Comments: 195 Degrees;Alternate Temperature
Per Car Qty: 1


Features & Benefits Quality Controlled Factory Calibration Assures Accuracy Of Opening & Closing, Regardless Of Pressure Changes. Positive Piston Heat Motor Provides Accurate Temperature Control. Sturdy Metal Construction Throughout. Attributes Depth from Flange : .82"
Design : Offset
Flange Diameter : 2.125"
Height from Flange : .91"
Jiggle Pin : Yes
Temperature Range : 195 Deg
Warranty Limited Lifetime-See Manufacturers Written Policy
Warranty PDF
Material Safety Data Sheet (MSDS) There is no MSDS for this item Application Information: 1990 Nissan Van Engines : 2.4 L 2389 CC L4 SOHC
Comments: 195 Degrees;Alternate Temperature
Per Car Qty: 1
Features & Benefits Quality Controlled Factory Calibration Assures Accuracy Of Opening & Closing, Regardless Of Pressure Changes. Positive Piston Heat Motor Provides Accurate Temperature Control. Sturdy Metal Construction Throughout. Attributes Depth from Flange : .82"
Design : Offset
Flange Diameter : 2.125"
Height from Flange : .91"
Jiggle Pin : Yes
Temperature Range : 195 Deg
Warranty Limited Lifetime-See Manufacturers Written Policy
Warranty PDF
Material Safety Data Sheet (MSDS) There is no MSDS for this item Application Information: 1990 Nissan Van Engines : 2.4 L 2389 CC L4 SOHC
Comments: 195 Degrees;Alternate Temperature
Per Car Qty: 1
Attributes Depth from Flange : .82"
Design : Offset
Flange Diameter : 2.125"
Height from Flange : .91"
Jiggle Pin : Yes
Temperature Range : 195 Deg
Attributes Depth from Flange : .82"
Design : Offset
Flange Diameter : 2.125"
Height from Flange : .91"
Jiggle Pin : Yes
Temperature Range : 195 Deg
Depth from Flange : .82"
Design : Offset
Flange Diameter : 2.125"
Height from Flange : .91"
Jiggle Pin : Yes
Temperature Range : 195 Deg

Feb 27, 2011 | 1990 Nissan Minivan

2 Answers

Engine temperature peugeot 307 sw hdi 90 rapier


hallo
behind front grill (near engine coolant blower motor) you have two relays for engine blower motor and resistor. Or one of this relay is foulty (or wires in conector) (oxidation becouse of the wather), or the resistor is broken. yours engine have two speed (stage) fan and probably first does not work. you can check when engaging AC first stage should work instantly. second start in about 100°C

Marko

Sep 24, 2009 | 2005 Peugeot 405

1 Answer

Why my navara temparature go up a little when driving up hill ?


It is normal for the water temp. to rise when extra load is applied to any vehicle. If it boils you have a problem but if it's not boiling dont worry about it.

Aug 08, 2009 | 2004 Chevrolet TrailBlazer

2 Answers

Coolant Temp sensor


The coolant temperature sensor should read at approx 1,800 ohms between 68 and 88 degrees F. As the temperature lowers, the resistance rises. More ohms. As the temperature rises, the resistance lowers. Less ohms. At 210 degrees, the ohms would be about .15 K ohms.

The 89 and the 12 figures are wrong.

Jan 17, 2009 | 1992 Toyota 4Runner

Not finding what you are looking for?
Cars & Trucks Logo

203 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercedes-Benz Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

yadayada
yadayada

Level 3 Expert

76164 Answers

Michael Contreras
Michael Contreras

Level 2 Expert

166 Answers

Are you a Mercedes-Benz Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...