Scooter
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Can someone tell me what the official coolant temperature sensor resistance values are supposed to be? (Room temperature preferred)
I've had about a 1.5 to 2 MPG drop off in fuel economy over the last few years NOT attributable to the thermostat so I was thinking of replacing the coolant temperature sensor. I did acquire a used one (no cost) that measures roughly 850 ohms from the terminal to the sensor housing at 68 deg F. My 2003 manual on page 22-16 says that the resistance should be within 2100 - 2600 ohms (+/-10%) at 68 deg F. It does list an incorrect 80 deg C for that temperature which I believe was an error and should have said 20 deg C instead. So the value on this part sounded suspect.
When I finally pulled out the original part a couple of weeks ago (204K miles of used) I was measuring 21.3K ohms with it which might have explained the slight loss in fuel economy since the engine is going to think that its colder than it really is.
So, I went and ordered a new part from Ron Ayers which just arrived on my doorstep. It certainly looks legit but when I measure the resistance of the new part I get about 20.4K ohms on it. *****???
I'm going to assume the following:
STeed is a 2004 ST1300A
Thanks...
I've had about a 1.5 to 2 MPG drop off in fuel economy over the last few years NOT attributable to the thermostat so I was thinking of replacing the coolant temperature sensor. I did acquire a used one (no cost) that measures roughly 850 ohms from the terminal to the sensor housing at 68 deg F. My 2003 manual on page 22-16 says that the resistance should be within 2100 - 2600 ohms (+/-10%) at 68 deg F. It does list an incorrect 80 deg C for that temperature which I believe was an error and should have said 20 deg C instead. So the value on this part sounded suspect.
When I finally pulled out the original part a couple of weeks ago (204K miles of used) I was measuring 21.3K ohms with it which might have explained the slight loss in fuel economy since the engine is going to think that its colder than it really is.
So, I went and ordered a new part from Ron Ayers which just arrived on my doorstep. It certainly looks legit but when I measure the resistance of the new part I get about 20.4K ohms on it. *****???
I'm going to assume the following:
- That the resistance value listed in my manual is incorrect.
- That the used part that I got is measuring lower than normal. Likely much lower than normal.
- That the new part probably is not going to help my problem much.
STeed is a 2004 ST1300A
Thanks...