Question about 1989 Mercedes-Benz 300-Class

1 Answer

Hi : question

I have a 1989 mercedes benz 300 SE and it ran hot on me today the cage got up to 120 which is the highest my cage goes to and the car was smoking from under the hood of the car what should i do please ?

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Check to see if it needs coolant. It could also need a radiator flush, new thermostat or you have a leak in your radiator. It is well worth the money to have it all done at one time. A radiator flush is part of regular maintenance in any vehicle. I would not drive the car if it is over heating. Get it to a shop that you can trust and have them look at it. Driving any car that over heating does alot of damage to the engine.

Posted on Jul 30, 2008


1 Suggested Answer

  • 2 Answers

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

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.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer


my 1989 mercedes benz 300e engine light flash on and off can any one plz tell me what the problem is my email is

Oct 28, 2011 | 1989 Mercedes-Benz 300-Class

1 Answer

Is there a trunk release for a 1989 mercedes benz 300 se

You need to look in the trunk behind the trim .Look up in the area of the fuel door , only inside the trunk you should see a red knob thats what you need to push or pull, its trial and error.

Oct 20, 2010 | Mercedes-Benz 300-Class Cars & Trucks

1 Answer

Where can I find a diagnostic computer plug for a 1989 mercedes benz 300 SE?

It is over by the battery, go to or on how to make a code reader and how to read the codes you find.

Apr 29, 2010 | 1989 Mercedes-Benz 300-Class

1 Answer

Firing order for plugs and wires on coil

Sorry for the long delay. Due to the bad economy, Questions have risen 50% in the last 4-months.
1989 Mercedes-Benz 300-Class ALL (CE, E, SE, SEL & TE)
Firing Order:

Let me know if this helped, or if you have additional information or questions. Feel free to contact me at

Feb 04, 2010 | 1989 Mercedes-Benz 300-Class

1 Answer

The driver's seat in my 1989 Mercedes 300 SE is changing positions on its' own. What can I do to stop it?

Assuming you have power seats, if you don't intend to change the seating position once you set it, you can simply reach under the seat from the back and unplug the motors, or remove the fuse associated with the power seats.

Dec 30, 2009 | 1989 Mercedes-Benz 300-Class

1 Answer

Runs bad in hot days, good in cold days. 89 benz

It could possibly be your temperature sensor. I had a Buick with the same problem. In winter, it ran fine. When the weather warmed up, the car would sputter and die. A defective temp. sensor will cause your car's ECM to mis-read the coolant's temp. So it will adjust your fuel input as if the outside temp. was -30,causing an over-rich fuel mixture.

Mar 07, 2009 | 1989 Mercedes-Benz 300-Class

1 Answer

Hi : question

There are a host of issues that can cause a vehicle to overheat. Getting from what damage has been done to what caused the damage will be tricky. Here is what I would do in you position.
Repair issues as found.

1) Check the fans, you should have 2 coloing fans, one for the a/c and one for the cooling system.
Make sure that neither are frozen and that both turn freely without growling sounds.
*Growling, noisy, frozen motors will need to be replaced.

2) Refill the radiator with fluid, (just use water right now no use wasting money on antifreeze until the problem is resolved), check for leaks.
*Repair all leaks found.

3) Start the engine Hold your hand pressing lightly where the radiator cap goes, if you are building pressure there within say a minute or so then you have combustion entering the cooling system.
*If pressure is building then internal damage has been caused and will need to be addressed by a competant mechanic/shop.

4) Keep the coolant reservoir full as the temperature rises to normal operating temperature. Listen and watch for the fan motor to start at the temperature rises. Turn the A/C off during this process, don't mistake the A/c fan for the cooling fan.
*If fan does not come on then you will need to check voltage to the fan motor to see if there is a problem with the fan or the electrical system to the fan such as fuses, relays senders or wiring.
**If fan is operating then probable cause is a sticking/stuck thermostat.

Once problems have been found and resolved drain and refilll cooling system with a 50/50 solution water/antifreeze.

Also replace the radiator cap unless you have the ability to pressure test the one you have already.

Hope that helped,
Good Luck

Nov 22, 2008 | 1988 Mercedes-Benz 300

1 Answer

1989 300 SE Mercedes A/C Problem

Ok that changes thing, is the low pressure line from the compressor getting frosty cold?

Sep 21, 2008 | 1989 Mercedes-Benz 300-Class

1 Answer

Mercedes 300 se

fuse in relay behind battery may be the porblem

Jul 08, 2008 | 1989 Mercedes-Benz 300-Class

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

Related Topics:

147 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercedes-Benz Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers


Level 3 Expert

79077 Answers

Joseph Prosser

Level 3 Expert

772 Answers

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

Answer questions

Manuals & User Guides