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Rafal
Flying Brick Rider
Joined: 05 Jan 2009
Posts: 257
Location: Wroclaw, Poland
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 Posted: Tue Jul 28, 2009 1:01 pm Post subject: Temperature sensor characteristics |
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Hello!
I have Motronic 1223 error code on my machine - cooling liquid temperature sensor out of range. I am going to test wires and connections firs, then the sensor. And here I have a question. The only information I have about the sensor is that it should have 25 Kohm at 20 C, and it is NTC termistor, but I have no other resistance vs. temp information. In 1993 there was a change in sensor in K1100, old one has M12x1,5 thread and connector on it, the new one has pigtail and M14x1,5 thread. But was there a change in characteristic? The old one is quite popular Bosh made one - easy to find. If the characteristic would be the same I could compare those two.
A piece of advice, information is kindly requested.
Best regards,
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Rafal
K1100RS is a real beast (in Marrakesh Red)
K75S is a real beauty - she has gone  , but not to far  .
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hfxrzw
Mad Brick Rider
Joined: 30 Jan 2009
Posts: 78
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| Posted: Tue Jul 28, 2009 2:17 pm Post subject: |
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| Rafal, I thought the original sensors were MotoMeter ones. Cheers, Rene. |
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Rafal
Flying Brick Rider
Joined: 05 Jan 2009
Posts: 257
Location: Wroclaw, Poland
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| Posted: Wed Jul 29, 2009 1:48 am Post subject: |
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Hello!
It is true and not  . MotoMeter made the gauges and the sensor on water pump. I am referring to engine tem. sensor used by Motronic. The sensor can be found on: models list.
Then I take a BMW number and put in google, and I found Bosch reference no and some others. But there is no data on the NTC it self :/
Regards,
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Rafal
K1100RS is a real beast (in Marrakesh Red)
K75S is a real beauty - she has gone , but not to far .
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hfxrzw
Mad Brick Rider
Joined: 30 Jan 2009
Posts: 78
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| Posted: Wed Jul 29, 2009 7:28 pm Post subject: |
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| What is the Bosch number? |
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Rafal
Flying Brick Rider
Joined: 05 Jan 2009
Posts: 257
Location: Wroclaw, Poland
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| Posted: Thu Jul 30, 2009 2:17 am Post subject: |
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| hfxrzw wrote: | | What is the Bosch number? |
Well, actualey there are few, depending on thread size and connector type. The easy way to find them is to search by car model or BMW ETK number.
BTW, after some test and Motronic reset it appears that sensor IS OK. Although it was a good educational trip. One thing that comes to my mind, after some annalists, is: the temperature sensor might by just 1.5 Klio Ohms NTC thermistor (the sensor is rated at 20 Celsius, thermistors at 25) - but it will take more research to do.
On the other hand I have now 1122 - Hall sensor no 2  , and it looks like failure, because yesterday I had sudden death in hot after noon while idling  .
Regards,
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Rafal
K1100RS is a real beast (in Marrakesh Red)
K75S is a real beauty - she has gone , but not to far .
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tmoons
Flying Brick Rider
Joined: 09 Oct 2008
Posts: 161
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| Posted: Thu Jul 30, 2009 6:58 am Post subject: |
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1122 and 1133 is normal if the engine is NOT turning over.
try pushing the starter butten (it is not important to have the engine fire up, just crank it) that should clear 1122 or 1133. |
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Rafal
Flying Brick Rider
Joined: 05 Jan 2009
Posts: 257
Location: Wroclaw, Poland
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| Posted: Thu Jul 30, 2009 7:25 am Post subject: |
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I did restart of Motronic, then crank the engine, then error readout. Is that mean that I should crank the engine during readout?
Regards,
Rafal
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Rafal
K1100RS is a real beast (in Marrakesh Red)
K75S is a real beauty - she has gone , but not to far .
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tmoons
Flying Brick Rider
Joined: 09 Oct 2008
Posts: 161
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| Posted: Thu Jul 30, 2009 8:19 am Post subject: |
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| Rafal wrote: | I did restart of Motronic, then crank the engine, then error readout. Is that mean that I should crank the engine during readout?
Regards,
Rafal |
no, do not think so, 1122 and 1133 just indicate it has not gotten any readings from the sensors.
Cranking it would give the signal and clear the error.
As the first error " disapeard' mayby you should have a goog look at all the wires and connectors (broken wire? loos contact? oxidation somewhere? also check the big connector to the brain it self). |
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Rafal
Flying Brick Rider
Joined: 05 Jan 2009
Posts: 257
Location: Wroclaw, Poland
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| Posted: Wed Aug 19, 2009 5:42 am Post subject: |
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Hello!
OK - I get rid of hall sensor errors - uff feel much bedder (and less poor ). Yet the temperature sensor is still a problem. Where is the temperature sensor connector located in post '93 models? I suspect somewhere under the tank, near head bearings.
BTW, do you have in yours K11 U shaped rubber gasket under the tank?
Best regards,
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Rafal
K1100RS is a real beast (in Marrakesh Red)
K75S is a real beauty - she has gone , but not to far .
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supercat1
Flying Brick Rider
Joined: 11 Aug 2009
Posts: 458
Location: Hoboken, NJ
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| Posted: Thu Aug 20, 2009 5:11 pm Post subject: |
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how are you getting the error codes?
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(formerly) 1993 k1100rs |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Thu Aug 20, 2009 6:15 pm Post subject: |
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The temp sensor for the Moronic is located on the front of the cylinder head. See that coolant hose? The base underneath it contains the temp sensor. You have to remove the radiator to get to it.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
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acftfliehr
Big Brick Rider
Joined: 05 Nov 2007
Posts: 62
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| Posted: Thu Aug 20, 2009 6:31 pm Post subject: |
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| I heard radiator mentioned here, does anyone out there have a line on a good custom radiator shop that can build a 3 core unit using a 2 core unit as an example.... |
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LordGondor
Big Brick Rider
Joined: 19 Jan 2007
Posts: 58
Location: Bernardsville, NJ
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| Posted: Thu Aug 20, 2009 8:26 pm Post subject: |
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Last winter I thought I had temperature sensor problems. I had the same error codes you are seeing. Eventually I tracked all my problems down to a stuck thermostat, without having to go through the pain of testing the sensors themselves. Other than the codes are you experiencing any problems with the bike?
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93 K1100RS
60K miles now. 30K by me. |
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Jim
Site Admin
Joined: 17 May 2003
Posts: 3841
Location: WHERETHEFUNNEVERENDS
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| Posted: Thu Aug 20, 2009 10:12 pm Post subject: |
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| Rafal wrote: | Hello!
OK - I get rid of hall sensor errors - uff feel much bedder (and less poor ). Yet the temperature sensor is still a problem. Where is the temperature sensor connector located in post '93 models? I suspect somewhere under the tank, near head bearings.
BTW, do you have in yours K11 U shaped rubber gasket under the tank?
Best regards, |
The fiche shows a U shaped rubber gasket - part # 16 for the RS. http://www.maxbmwmotorcycles.com/fiche/MainDiagrams.asp?mospid=47928 Model: K1100RS Diagram #16_0242
I think it's only for the RS. Although the fiche shows it in the picture for the RS and LT - it's only listed for the RS, not the LT.
_________________
Jim
1997 K1100LTSE 94,000 - still has gremlins!
1995 R100RT Classic 16,650 crashed - repaired!
1992 K75RTP 46,000
"We shall not all die, but we shall all be changed."
Last edited by Jim on Thu Aug 20, 2009 10:28 pm; edited 3 times in total |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Thu Aug 20, 2009 10:19 pm Post subject: |
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| Jim wrote: | | Rafal wrote: | Hello!
OK - I get rid of hall sensor errors - uff feel much bedder (and less poor ). Yet the temperature sensor is still a problem. Where is the temperature sensor connector located in post '93 models? I suspect somewhere under the tank, near head bearings.
BTW, do you have in yours K11 U shaped rubber gasket under the tank?
Best regards, |
Yes - it is actually several pieces - it's called heat screening on the fiche. Don't know if it's the same on the RS as the LT. |
Np, it's one piece. The parts catalog refers to it as a gasket. I've always thought it's purpose was more about isolating the tank from vibration, not heat.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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