ECT sensor


Information and questions on GL1800 Goldwings (2001-2017)
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Yrrah56
Posts: 3
Joined: Fri Sep 30, 2022 3:58 am
Location: Den Helder, Netherlands
Motorcycle: Goldwing GL1800A, 2001

ECT sensor

Post by Yrrah56 »



Hello, I've just become a member of this forum as I have a problem with my 2001 GL1800.
The problem is related to the ECT (engine coolant temperature sensor) This sensor sends a signal at the temperature gauge and also a signal to the ECU. The ECU translates all the inputs to the right amount of fuel injection.
The sensor should have a specific resistance value in ohms. Is there anybody who knows the value of the sensor at different temperature rates, f.e. 80 degreesC and 120 C. The OEM number of this sensor is 37870-MAT-E01. Later models (from 2006 and on) have a different sensor build in.
Hope somebody can help me with this issue.


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GoldWingrGreg
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Re: ECT sensor

Post by GoldWingrGreg »

To test the ECT ... measure resistance between the single connetor point (thermosensor terminal), and ground (the body)
- put in collant up to the threads
- keep temp steady for 3 min before testing
- test at 176 deg f, resistance = 47-57
- test at 248 deg f, resistance = 14-18

Replace if out of spec by 10%
Yrrah56
Posts: 3
Joined: Fri Sep 30, 2022 3:58 am
Location: Den Helder, Netherlands
Motorcycle: Goldwing GL1800A, 2001

Re: ECT sensor

Post by Yrrah56 »

Thanks for the answer, it is as expected, I already checked the values and read about it, but needed to be confirmed.
I had mine tested and it's way out of of the values as mentioned.
I guess I just have to buy a new one, but these sensors are not cheap. In my country (Netherlands) the price is about a 100 euro's which is about 100 dollars.
Anyway, I guess it's the only solution for this problem...


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GoldWingrGreg
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Location: Zephyrhills, Florida
Motorcycle: 89 GL1500
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Re: ECT sensor

Post by GoldWingrGreg »

If your values are off, and you want to know that your Wing is operating correctly, then the next thing to do is to replace the sensor, and its crush washer, and recheck from there. You will want to replace the sensor for the appropiate year.

FYI ... GL1800 are not only expensive to repair, but are expensive to maintain too. Here in the US, I tell my customers that a properly maintained Wing, one where a person can hop on it and do a continental tour, at any given time, which includes new tires when needed, costs about $2,000/10,000 miles of riding. One not well maintained costs far more to repair. This is based on 12-15,000 per year.

If yours can be fixed with a sensor, and not a new harness, you have no idea how lucky you are :) Here in the US, harnesses have not been available for years. If you were my customer, and I was able to fix your issue with a sensor, I would be incredably happy for you !!!
Yrrah56
Posts: 3
Joined: Fri Sep 30, 2022 3:58 am
Location: Den Helder, Netherlands
Motorcycle: Goldwing GL1800A, 2001

Re: ECT sensor

Post by Yrrah56 »

Hello Greg,
Hopefully it will solve the problems which occurred. The new sensor will arrive today, and I hope I can build the bike up again tomorrow and go for a test ride.
What do you mean by a harness? My technical English language is a bit rusty.

Harry


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