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V7 Cafe Air Temperature Sensor

JasonC

JasonC

Cruisin' Guzzisti
GT Contributor
Joined
Jun 5, 2021
Messages
371
Location
Katy, Texas
My 2010 V7 Cafe has what appears to be an air temperature sensor. When I got the bike it was connected to the plastic intake runner on an ill-fitting K&N air filter. I have since tossed the K&N filters in the waste bin and installed UNI filters in their place. I had to make a stainless steel extension for the left-hand filter in order to obtain filter clearance and installed the air temperature sensor in this extension.

What is the purpose of the air temp sensor? I assume when it senses cool temperatures it sends a signal to the ECU, which then enrichens the fuel mixture? Is this a correct assumption? And does it work through the entire engine rev band or only for starting and idle or??? And as temps increase does the temp sensor signal the ECU to then lean-out the fuel mixture?

What would be the effect if the sensor were disconnected?

Any information about this sensor would be greatly appreciated!

Jason
 
V700Steve said:
Why don't you look in the service manual where it tells you. I'd put it in a still air area and leave it. ECU uses it to do mixture.
Click to expand...
Thanks for that suggestion.

I was too general in my query.

I was fishing for whether or not the temperature sensor was strictly to facilitate cold starts. In other words acting like a temporary enrichener circuit to assist combustion just when starting cold.

The lambda sensor in the exhaust system senses oxygen content too, and signals the ECU to optimize fuel quantity. So I was thinking the intake temperature sensor must have a slightly different purpose.

Jason
 
Last edited:
The outside air temp is used all the time not just when it's cold. When it is faulty it goes to a constant 20*C(limp home mode). Not all ECU's have O2 sensors, in fact you can just shut them off with the right software.
Guzzi didn't use O2 sensors until 06, 1993 was 1st year for FI and I learned from Ducati school about it in the late 80's.
Read the FI manual or service manual explains it pretty good. ECU uses all the sensors to compare what engine needs for fuel.
It's all interesting reading for those who want to learn.
 
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