Air temperature sender on 1100GS

[Matt Padgham]

Anyone know of an easy way to check if the air temperature sensor is working correctly. Is it a case of connecting a multi meter across the terminal and heating it up to see if the resistance changes?

Also as an asside, the oil temp has not risen above 3 bars recently, in the cold snap not above 2. i know the oil temp sensor may be at fault, but where is it?!

 

[motobiker]

air temperature sensor?

I didn't know these bikes had one. why should it?

 

[ogni]

Anyone know of an easy way to check if the air temperature sensor is working correctly. Is it a case of connecting a multi meter across the terminal and heating it up to see if the resistance changes?

Also as an asside, the oil temp has not risen above 3 bars recently, in the cold snap not above 2. i know the oil temp sensor may be at fault, but where is it?!

I think you worry over nothing.
Oil temp on my 1100 doesnt go over 2-3 bars while riding and maybe
up to 4 bars if i m stuck in traffic behind cars in this weather.

I dont know how to check the temperature sensor, as i never had to,
but some body on here might know

Ogni

 

[shready]

air temperature sensor?

I didn't know these bikes had one. why should it?

That was my initial thought too.

 

[ogni]

The air temperature sensor sits in the airbox lid.

Ogni

 

[shready]

The air temperature sensor sits in the airbox lid.

Ogni

Ahh that thing

That's why I pay someone to service my bike

 

[Trullion]

The oil temperature sensor is on the top of the crankcase, on the RHS near the union where the pipe from the oil cooler joins the crankcase. My guess is that this is more likely to be the problem than the air temperature sensor. In my case it caused very rich running, cured by replacing it with a used one from Motorworks. I have inadvertently run the bike without the air temperature sensor being connected; I noticed no difference. If the only cause of concern is the temperature displayed on the RID I wouldn't worry. IMHO those things are a PITA that cause all sorts of worries; my GS doesn't have one, so I only worry if there is an actual problem with the way the engine is running. Aside from this I'd be surprised if in the Arctic conditions we've experienced lately the oil temperature did get up to normal, unless the oil cooler is blanked off. It's the opposite of the temperature reading being abnormally high in a heatwave.

Regards

 

[Matt Padgham]

Thanks for the info Trullion, the bike has been running rich and I have checked all the usual suspects apart from air & oil temp senders. I wasn't overly worried about the oil temperature and suspected that either air or oil temp. sensors were causing motronic to chuck more fuel in as it assumes temperature is lower than it really is.

Running with heated jacket and heated grips on probably hasn't helped economy either!
I'll try and get hold of a second hand oil temp. sender and see if this improves matters.

Matt

 

[Trullion]

Matt,

If that doesn't cure it, try checking the TPS (throttle position sensor). I found that adjusting it to 0.370mv finally got rid of the rich running on mine. There's a thread on it somewhere, but it's not hard to do.

 

[Matt Padgham]

Trullion,
I've already got the tps to 0.370 mv so hopefully its the oil temp sensor!