have recently bought this 190 and it appears not to have a electric fan fitted, and overheats in slow traffic. Is this a problem with the 190 or just the model i have. Is the an upgrade available to cure this problem
1987 190 2.0 petrol overheating
- Thread starter dave r
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spanners
Senior Member
Fan
The fan is set to come on at 100 degrees which is alot higher than some other makes of car.
So check first of all that it doesn't come in at that temp.
If it isn't test then fan by bridging the terminals in the temp sensort plug.
The fan is set to come on at 100 degrees which is alot higher than some other makes of car.
So check first of all that it doesn't come in at that temp.
If it isn't test then fan by bridging the terminals in the temp sensort plug.
mike65
Senior Member
Re: Fan
Is that the red sensor with 2 gold pins at front of cylinder head?
Mike.
spanners said:
Is that the red sensor with 2 gold pins at front of cylinder head?
Mike.
Wisher
Active Member
I had the same thing happen to my car three years ago...
I had to open all the windows and put the fan on hot and the blower on,, just to take the heat off the engine....
this is an easy fix problem........
I took my car in and all they did was fit a small peice of wire, so the front fan would stay on all the time and not slow down, in standing traffic....
I wouldn't bother getting an extra fan fitted....
Any mercedes garage will know where to put the wire,,,,
it doesn't do any damage to the car or battery...
as I found it did the job and didn't go over 90 degrees..
and they shouldn't charge you for doing this as it take seconds.....
if they say that a fan is the best option, TRY SOMEWHERE ELSE.. they are only trying to get money out of you.....
it's a very cheap option rather then buying a fan....
it really does work..........
Hope this helps....
just go in and ask.....
I had to open all the windows and put the fan on hot and the blower on,, just to take the heat off the engine....
this is an easy fix problem........
I took my car in and all they did was fit a small peice of wire, so the front fan would stay on all the time and not slow down, in standing traffic....
I wouldn't bother getting an extra fan fitted....
Any mercedes garage will know where to put the wire,,,,
it doesn't do any damage to the car or battery...
as I found it did the job and didn't go over 90 degrees..
and they shouldn't charge you for doing this as it take seconds.....
if they say that a fan is the best option, TRY SOMEWHERE ELSE.. they are only trying to get money out of you.....
it's a very cheap option rather then buying a fan....
it really does work..........
Hope this helps....
just go in and ask.....
spanners
Senior Member
Re: Fan
Yeh, that is the correct sensor.
What wisher has said is correct, you can use a piece of wire to permanently bridge the connection. That will cut the fan in when ever the engine is running.
The only negative result of this is that on cold winter mornings, the heater inside the car takes longer to warm up because the fan is cooling the engine right from the start.
mike65 said:
Yeh, that is the correct sensor.
What wisher has said is correct, you can use a piece of wire to permanently bridge the connection. That will cut the fan in when ever the engine is running.
The only negative result of this is that on cold winter mornings, the heater inside the car takes longer to warm up because the fan is cooling the engine right from the start.
overheating on 190
i've had two 190's now and found same problem with each one, the viscos? fan doesn't work properly.
i have had to install an electric fan (off an escort mk2 from scrapyard) to the front of the radiator, reverse wired so the air went the correct way wired to a switch on dash board, so as to control temp as and when needed.
i found this worked a treat. especially when i went to blackpool lights 1 year
i've had two 190's now and found same problem with each one, the viscos? fan doesn't work properly.
i have had to install an electric fan (off an escort mk2 from scrapyard) to the front of the radiator, reverse wired so the air went the correct way wired to a switch on dash board, so as to control temp as and when needed.
i found this worked a treat. especially when i went to blackpool lights 1 year
philster
Active Member
Wisher - I have two questions:
(1) I have a 1994 C180 Classic - very basic model (no air con, no sun roof, elec windows in front only etc etc, but it's still lovely). The temp seems to creep up to 100 very easily in traffic and on sunny days. Once I get going again the temp does creep down, albeit very slowly (although not nearly as fast as when it rises!). So, how can I tell if I have an electric fan? It's not easy to see what's on the grille-side of the radiator. Would it be visible with the naked eye or is it in some kind of casing?
(2) I like the sound of this "bridging wire" that you talk about. If I don't have an electric fan, can I fit it to the viscous fan? How much did it cost exactly?
(1) I have a 1994 C180 Classic - very basic model (no air con, no sun roof, elec windows in front only etc etc, but it's still lovely). The temp seems to creep up to 100 very easily in traffic and on sunny days. Once I get going again the temp does creep down, albeit very slowly (although not nearly as fast as when it rises!). So, how can I tell if I have an electric fan? It's not easy to see what's on the grille-side of the radiator. Would it be visible with the naked eye or is it in some kind of casing?
(2) I like the sound of this "bridging wire" that you talk about. If I don't have an electric fan, can I fit it to the viscous fan? How much did it cost exactly?
Wisher
Active Member
philster.....
I think you should be able to see the fan at the front of the engine, if you can see the fan belt then you have a fan... where the front grill is, it's behind that...
if it was a thermostat that has failed. then the engine wouldn't get hot. the thermostat has an automatic valve. if this fails then the valve remains in the open position and lets the cooling water to circulate around the engine.
If I knew how to post a picture, I would be able to show you where this bridging wire should go....
all the wire is,,Is a very think fuse type wire... which I will take a picture of so you can see it... it's not the spun wire like in a plug.
all this wire does,, is keeps the fan working all the time..instead of it just cutting in when the temp goes up..
Yes like spanner said it does take abit longer for it to warm up in the car in winter..
If i could get a picture on here, then you could see where this wire goes..
it doesn't damage the car in anyway.. so you can only try it..
I think you should be able to see the fan at the front of the engine, if you can see the fan belt then you have a fan... where the front grill is, it's behind that...
if it was a thermostat that has failed. then the engine wouldn't get hot. the thermostat has an automatic valve. if this fails then the valve remains in the open position and lets the cooling water to circulate around the engine.
If I knew how to post a picture, I would be able to show you where this bridging wire should go....
all the wire is,,Is a very think fuse type wire... which I will take a picture of so you can see it... it's not the spun wire like in a plug.
all this wire does,, is keeps the fan working all the time..instead of it just cutting in when the temp goes up..
Yes like spanner said it does take abit longer for it to warm up in the car in winter..
If i could get a picture on here, then you could see where this wire goes..
it doesn't damage the car in anyway.. so you can only try it..
Wisher
Active Member
ok I'm been out and taken some pictures...
where this wire is on my car.. wire is about 2cm-3cm
(it's next to the engine,front right.) there should be a square black termernal about 2cm by 1& abit cm with wires comeing out... the bottem part should be red, this has two pins holding the two together.. the black part pulls out, the end of the wire is then inserted into each holes, so it forms a loop.. then put the black thing back on with the wire loop showing,, just leave it to stick out.. not touching anything..
this is the way it is on my car, it's been on there for three years..
if you think it's not working on your car then take it off...
hope this helps...
in any doubt don't put it on yourself...go to the garage and ask them to fit the bridging wire for you...
It didn't cost me anything.. and only took a second, cos they know where it goes...
try this before to go and buy a fan,,,
where this wire is on my car.. wire is about 2cm-3cm
(it's next to the engine,front right.) there should be a square black termernal about 2cm by 1& abit cm with wires comeing out... the bottem part should be red, this has two pins holding the two together.. the black part pulls out, the end of the wire is then inserted into each holes, so it forms a loop.. then put the black thing back on with the wire loop showing,, just leave it to stick out.. not touching anything..
this is the way it is on my car, it's been on there for three years..
if you think it's not working on your car then take it off...
hope this helps...
in any doubt don't put it on yourself...go to the garage and ask them to fit the bridging wire for you...
It didn't cost me anything.. and only took a second, cos they know where it goes...
try this before to go and buy a fan,,,
mike65
Senior Member
We want the pictures!
Mike
Mike
Wisher
Active Member
LOL....I'm not sure how to upload them.....
mike65
Senior Member
I recommend www.photobucket.com except they're doing maintainence at this moment! edit they're open for business again. Its free.
Mike.
Mike.
Wisher
Active Member
what I will do is, post the picture on one of my profiles and put the address on here to be viewed....
NormanB
Senior Member
Tut tut!
If your viscous fan cuts in when you have the sensor wire bridged, then the fault is merely the thermosensor.
The thermosensor is available at your dealer for £16 ish and you will need a 22mm deep socket to remove and about 5 mins of your time.
Could I suggest that if you use the search facility on these forums you would not plough over old ground and potentially save yourself a lot of expense and heartache rengineering your already very well engineered car!!
:wink:
Try this:
http://forums.mercedesclub.org.uk/viewtopic.php?t=6286
If your viscous fan cuts in when you have the sensor wire bridged, then the fault is merely the thermosensor.
The thermosensor is available at your dealer for £16 ish and you will need a 22mm deep socket to remove and about 5 mins of your time.
Could I suggest that if you use the search facility on these forums you would not plough over old ground and potentially save yourself a lot of expense and heartache rengineering your already very well engineered car!!
:wink:
Try this:
http://forums.mercedesclub.org.uk/viewtopic.php?t=6286
jberks
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its not the fuel consumption I would be concerned about as much as the extra engine wear as the engine and librication are designed to be optimal at normal running temp. The majority of engine wear occurs below this. If you short out the thermistor, I would put a switch in so I could only use it when I needed it. - best of both worlds.
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