Engine Running Warmer Still???
Thread Starter
Junior Member
Joined: Dec 2015
Posts: 21
Likes: 0
CLK500
Engine Running Warmer Still???
Hi guys,
04 clk 500 new thermostat and temp sensor about a month or two ago.. Rad is only a few years old (replaced by previous owner) secondary cat and muffler delete.
What is normal operating temp? I have been sitting at 90+-100 never over though. The weather has been cooler 5-10 degrees Celsius (this also was happening in the winter at -10 to -20 Celsius)
The reason for this post is I never really payed attention to the temp gauge when I got the car until a few months back when The temp sensor went.. Today I found a picture from last summer.. 25+ Celsius and the temp gauge (while cruising) was dead middle at 80.. Why now am I experiencing warm temps? Especially in the cold weather!!! I'm 99% sure the fan still works as it was when I had my temp sensor issue! I believe the shop that did the thermostat topped up with normal green coolant.. (Not happy about it) but I dont think this would have anything to do with it?
Any input would be greatly appreciated! I was planning on having my shop now (MB specialist) do a coolant flush and check the thermostat temp and make sure the last shop put the correct one in..
Any thoughts?
04 clk 500 new thermostat and temp sensor about a month or two ago.. Rad is only a few years old (replaced by previous owner) secondary cat and muffler delete.
What is normal operating temp? I have been sitting at 90+-100 never over though. The weather has been cooler 5-10 degrees Celsius (this also was happening in the winter at -10 to -20 Celsius)
The reason for this post is I never really payed attention to the temp gauge when I got the car until a few months back when The temp sensor went.. Today I found a picture from last summer.. 25+ Celsius and the temp gauge (while cruising) was dead middle at 80.. Why now am I experiencing warm temps? Especially in the cold weather!!! I'm 99% sure the fan still works as it was when I had my temp sensor issue! I believe the shop that did the thermostat topped up with normal green coolant.. (Not happy about it) but I dont think this would have anything to do with it?
Any input would be greatly appreciated! I was planning on having my shop now (MB specialist) do a coolant flush and check the thermostat temp and make sure the last shop put the correct one in..
Any thoughts?
Thread Starter
Junior Member
Joined: Dec 2015
Posts: 21
Likes: 0
CLK500
Originally it was the yellow ish colour.. Which I understand was the older MB coolant.. Now there's the bright green crap in there.. I didn't think so check after the thermostat was installed.
Could it be the old temp sensor was acting up last summer then finally kicked the bucket this January? Seems like a long time though?
Or
Could the thermostat that was installed has a higher degree release? Or could it be something totally different?
Could it be the old temp sensor was acting up last summer then finally kicked the bucket this January? Seems like a long time though?
Or
Could the thermostat that was installed has a higher degree release? Or could it be something totally different?
Thread Starter
Junior Member
Joined: Dec 2015
Posts: 21
Likes: 0
CLK500
Thanks guys! I just freaked out because of seeing the pic of last summer in the middle of summer at 25 Celsius and the temp sitting at 80..
I will be flushing the system and putting new mb coolant in for sure!! I always like to run oem fluids! They come that way for a reason!
Thanks again! Appreciate the insight
I will be flushing the system and putting new mb coolant in for sure!! I always like to run oem fluids! They come that way for a reason!
Thanks again! Appreciate the insight
Trending Topics
Thread Starter
Junior Member
Joined: Dec 2015
Posts: 21
Likes: 0
CLK500
I'm going to flush with new coolant maybe I'll pull the thermostat out and check the degree rating on it.
I was afraid of what summer would hold for her if she was running higher temps in the cold weather! If these temps are fairly normal though I will just keep on driving her!
Thanks again to all for your opinions and help! Much appreciated!
MB World Stories
The Best of Mercedes & AMG
8 Oddball Mercedes Ideas That Actually Made it to Production
Verdad Gallardo
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look
Verdad Gallardo
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish
7 Craziest Things AMG Gas Ever Built
Verdad Gallardo
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know
Verdad Gallardo
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Thread Starter
Junior Member
Joined: Dec 2015
Posts: 21
Likes: 0
CLK500
Hey guys,
Bit of an update.. Complete coolant flush done and replaced with oem coolant!!
Today is 14 Celsius and my car is consistently running just under 100 degrees.. (One tick below) no matter driving or sitting.. However when sitting it sits at 100 then will drop down that 1 tick when moving.
I'm lost as to what is going on.. Could the new thermostat be crap? Could my water pump be shot? (I don't see any leaks, hear a faint grinding noise when the car is running and I place my head over the pulley area.. Could be any pulley though) could the new temp sensor be reading wrong? I'm absolutely lost! Last year in the middle of summer (30 Celsius) this car ran at 80 degrees why now am I running at 100!!!!! Also, I'm not loosing coolant either!
I ran the car for 5 mins with the AC on full blast.. Shut off for 5 mins, turned ignition on car was at 100 or the tick below again. Started the car and it didn't move... Is this the water pump kicking the bucket??
Any input please would be extremely helpful!!!!!!
Bit of an update.. Complete coolant flush done and replaced with oem coolant!!
Today is 14 Celsius and my car is consistently running just under 100 degrees.. (One tick below) no matter driving or sitting.. However when sitting it sits at 100 then will drop down that 1 tick when moving.
I'm lost as to what is going on.. Could the new thermostat be crap? Could my water pump be shot? (I don't see any leaks, hear a faint grinding noise when the car is running and I place my head over the pulley area.. Could be any pulley though) could the new temp sensor be reading wrong? I'm absolutely lost! Last year in the middle of summer (30 Celsius) this car ran at 80 degrees why now am I running at 100!!!!! Also, I'm not loosing coolant either!
I ran the car for 5 mins with the AC on full blast.. Shut off for 5 mins, turned ignition on car was at 100 or the tick below again. Started the car and it didn't move... Is this the water pump kicking the bucket??
Any input please would be extremely helpful!!!!!!
Thread Starter
Junior Member
Joined: Dec 2015
Posts: 21
Likes: 0
CLK500
With a new thermostat and temp sensor I may start there to see if by any chance one is faulty.. As this could be a very possible thing? Another thought.. Could I have air in my system?
However, last night probably about 12 Celsius outside in town driving the car stayed in the 85-90ish range which was perfect! When I got on the highway cruising at about 120-130 km/hr I notice it stayed pegged with no movement at about 90 maybe a touch higher I'd say... Still better then the steady 100 it has been showing lately (during the day at 15+ celsius) Do these symptoms show anything I may not be aware of? I always thought those were thermostat or water pump symptoms but would be happy to hear your thoughts again!
Thank you again! This is greatly appreciated!!
Thread Starter
Junior Member
Joined: Dec 2015
Posts: 21
Likes: 0
CLK500
I took my car out of town today (20 Celsius out) mixture of country and highway driving and I'm fluctuation between 85-90 oC.
In town driving I'm always staying 100 or the tick under.. Would this clarify my water pump is the problem and not circulating enough? Or is this relatively normal? I know these engines run hot however I just want to be 100% sure and would rather have something fixed now before it becomes a bigger issue..
Thanks again!
Thread Starter
Junior Member
Joined: Dec 2015
Posts: 21
Likes: 0
CLK500
Ya? Ok maybe I'm just over thinking things! I never payed attention to the temp gauge when I got the car! This year I had an issue where I was running high temps.. Over 100 and that's when I started to watch it! After changing the thermostat we determined then it was just the temp sensor! Now I've always watched the temp gauge! Back in highschool I had a Lincoln LS that would always overheat and I just did not want that again! Lol
I appreciate everyone's input and posts! I will put my mind as easy for now! I'll have a peak at any pulley play or leaks when the oil change gets done in the coming weeks (right now there's no a leaks nor pulley play)
Thank you again to all!
I appreciate everyone's input and posts! I will put my mind as easy for now! I'll have a peak at any pulley play or leaks when the oil change gets done in the coming weeks (right now there's no a leaks nor pulley play)
Thank you again to all!
Member
Joined: Jun 2016
Posts: 128
Likes: 9
W211 E270 cdi 2004
Thanks for sharing your experience. The car was low on refrigerant. I had filled her up today and Driver side is now cooling properly. My AC is definitely has a leakage as I recall filling the refrigerant a couple of months ago but the car was barely used during this period. Let's see how long this fill up last. I will take the car to the dealership to check it thoroughly for leakage. From your experience do you know how much refrigerant the system can hold in lbs?
Thanks again.
Thanks again.
