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| cooling system | |
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| Tweet Topic Started: Thu Jul 2, 2009 7:25 pm (931 Views) | |
| protearose | Thu Jul 2, 2009 7:25 pm Post #1 |
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Hi. Cooling temperature climbs to 100 after 3 miles and stays there but doesnt boil? |
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| Stempies | Thu Jul 2, 2009 7:30 pm Post #2 |
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Hot Lips
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Very hot weather may be a factor! Must admit mine still runs at 80* unless i hit heavy traffic! |
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| mdavison | Thu Jul 2, 2009 10:05 pm Post #3 |
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Sound a bit warm, you might need to adjust the ratio of coolant/antifreeze to water. |
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| algord83 | Thu Jul 2, 2009 10:10 pm Post #4 |
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I can count to potato
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Mine has been climbing rapidly in traffic in this heat ![]() As soon as the fan kicks in, it starts to slowly cool off. However, If I give it a good revving in traffic with the fan on it cools very rapidly. .30 seconds or so at 3.5k does the trick ![]() Also revving when the fan is on is fun....sounds like a jet engine!....always gets attention in traffic ![]() Al |
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| stwat | Fri Jul 3, 2009 12:40 am Post #5 |
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Id change the thermostat. Does the fan never cut in? What engine is it? The 2.6 engines use a viscous fan while all other models have an electromagnetic fan which is controlled by a temp switch. Maybe you need a new fan switch. In any case, id say you need a new thermostat. |
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| chrismatheou | Fri Jul 3, 2009 1:05 am Post #6 |
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Enthusiastic Bad Boy
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Both my 190's run at the correct temp. My 2.0litre used to creep up to 100 on a very hot day in traffic and come down to a max of ninety after the fan had kicked in. On my diesel after changing the waterpump & housing, new mercedes radiator and viscous fan the car still runs exactly as it did before the accident, thanks Matt That's the same temp of 82c all day long it hasn't ever budged from that in the last few steeming hot days whilst sat in a good few hours of London traffic |
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| balamb37 | Fri Jul 3, 2009 10:44 am Post #7 |
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Grumpy Old Grampa with Dog
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I wouldn't worry too much over it, When I was in South Germany the temp. was always at around the 100 in summer where the outside temp was nearly always around the high 20s to 35, for the 190 there is two temp. Thermostats and also two temp Thermoswitches for the fan, whether that is the case here I don't know, and as long as you don't boil over you haven't a problem. |
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| ML190E | Fri Jul 3, 2009 8:02 pm Post #8 |
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My 190 gets very hot in traffic too and i've never heard the fan cut in tbh i didnt think the fan was supposed to. Where are the fan switches located |
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| balamb37 | Fri Jul 3, 2009 10:07 pm Post #9 |
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Grumpy Old Grampa with Dog
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Hi, The thermal switch that opperates the fan is in the top of the head, the front one with a plug on it with two connections in it. (depending on your model. I believe MB supply two different ones, with different opperating temperatures for switching the fan on. Cheers Barrie. |
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| ML190E | Fri Jul 3, 2009 10:08 pm Post #10 |
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Cheers thanks for the info Barrie |
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| balamb37 | Fri Jul 3, 2009 10:13 pm Post #11 |
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Grumpy Old Grampa with Dog
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With your ignition on, take the plug off and short the two connections in the plug and your fan should switch on if not then you have a problem in the power delivery somewhere. |
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| protearose | Fri Jul 3, 2009 10:15 pm Post #12 |
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Thanks everyone. It doesnt boil so I wont worry. Maybe its a faulty gauge or temperature sender unit. I will see if it gets any worse. |
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| EwanS | Mon Jul 6, 2009 8:53 am Post #13 |
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I ended up having to go on a rescue mission to collect friends from Wembley Stadium on saturday night, and the engine temperature gauge went up to 110 and higher when I got stuck in a traffic jam outside the event. Opened the bonnet to fit the "over-ride cable" onto the fan connector, but the fan had kicked in and was spinning really, really quickly. I ended up pulling over and abandoning the car with its bonnet up for half an hour to cool down before driving home again. So, how come this car despite the fan kicking in was still getting too hot? Its a 1991 1.8 manual with the electromagnet on the fan coupling. We changed the thermostat when we bought the car, should I change the switches too? Seemed a bit strange that despite the cooler temperature in the evening that it would get that hot in a traffic jam and not cool down when the fan kicked in. I should add, I had to replace the radiator last year when it overheated and blew a hole in the radiator and dumped its coolant all over the A3. That was in a traffic jam in November last year, so it wasn't exactly warm outside. |
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| balamb37 | Mon Jul 6, 2009 11:50 am Post #14 |
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Grumpy Old Grampa with Dog
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Hi, They do tend to get a bit hot in standing traffic, but as long as your fan is kicking in all you need to do is rev it a bit and you should see the temp. fall, if not heater full on hot and speed with the windows wide open and when you get home check for the reasons why it failed, can be that someone has tipped a tin of 'radweld' or'barrs' in at sometime or another and somewhere a coolant chanel is blocked. But take into account that the temp. gauge could be over reading. Cheers Barrie. Edited by balamb37, Mon Jul 6, 2009 12:06 pm.
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| RichardCC | Wed Jun 23, 2010 9:37 pm Post #15 |
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I have had this problem of temp reaching 100+ in hot weather, slow traffic, etc. I had been using about a quarter to half a litre of water (correct mix with antifreeze, 'cos I believe lack of anti-freeze is a contributary factor to overheating). I finaly got round to geting Andy to do a pressure test, and yes water came out of the bottom of the rad in bucket loads. New rad from EuroCarParts and on a run to Wales today it is running at the correct temp - Andy tells me that the indicator should be running through the top of the 8 on the dial, which is now what it is doing. As a heads up, if you buy a rad from euro the slits on the plastic bits at the bottom of the rad as you face the car, which the fan shroud sits in appear to me to not be quite correct, looking at the car the left hand peg sits in properly, but the right hand one which should be set back about half a centimetre from the rad , is nearer to the rad the same as the left hand one, it's not a difficult fix, just drill four holes as near to the correct position as possible (using your old rad as a guide), slice and file the elongated hole to the same size - job done in quick time - but the big waste of time was discovering why the fan shroud would not seat properly and difficult to see why not. Hope this helps someone. |
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| jimbojones | Thu Jul 1, 2010 9:57 am Post #16 |
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Forum idiot
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the problem with overheating often stems from the fact that the 190e has an incredibly small radiator, mine was acting up even with the fan working. In the end got three small holes drilled in the thermostat to increase water flow and that sorted it |
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| Security2U | Fri Jul 2, 2010 2:26 pm Post #17 |
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I was going to start a new thread but thought i would just post here. Was up with my aul lad at a mates of his house there the other day who has a auto 2.5 16v that has been parked up for years in his garage he popped the bonnet and i seen that his radiators were kinda fecked looking i seen the oil cooler rad which was grand put the other 2 were shot i know one is to cool the engine but whats the other one in front of it do.?. |
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| stwat | Fri Jul 2, 2010 2:55 pm Post #18 |
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That's for the air conditioning. |
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| Security2U | Fri Jul 2, 2010 6:00 pm Post #19 |
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Thanks man. He needs to order both radiators,do you know a good place were he could do this. |
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| RichardCC | Fri Jul 2, 2010 9:18 pm Post #20 |
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Hi, Got mine from eurocarparts approx £150 for rad - haven't got air con so can't help there, but I'm sure they'll do them. Have a look at their website Richard Edited by RichardCC, Fri Jul 2, 2010 9:19 pm.
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| Toff190 | Fri Jul 2, 2010 9:36 pm Post #21 |
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190 Mob Member and a Wise Guy.
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I would be a little concerned if mine was running at 100+ and starting to panic at 110+ Both my 2.6's never go much over 80 although i believe 16v's do run hotter |
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| PARI | Fri Jul 2, 2010 9:40 pm Post #22 |
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Addicted
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i too own a 2.6 and i am concerened because i have changed my viscous and it still creeps upto 100 degrees in traffic, i also have air con and rad in front, couldthat be preventing it cooling down ??? |
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| Toff190 | Fri Jul 2, 2010 9:54 pm Post #23 |
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190 Mob Member and a Wise Guy.
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One with one without air con and they both sit at 80 - 85 max Suppose temp gauges/switches vary from car to car. |
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| Security2U | Sat Jul 3, 2010 12:23 am Post #24 |
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My 2.3 will sit at 80 and 85 in traffic and will drop abit below 80 if driving slow. Thanks Richard. |
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and viscous fan the car still runs exactly as it did before the accident, thanks Matt

2:03 AM Jul 11