Sensor on left front engine side unconnected...

[Black 94]

above first spark plug.What is the use of this sensor? Temperature gauge works fine.
Also getting code "55".

Thanks,

 

[KWIK96]

I presume you are talking about the IAC (Idle Air Control)
It is above plug one and just under the RHS throttle body.
If so, the purpose of this is to manage air control to the motor based on inputs it receives from the PCM.
If it is disconnected she may run a tad rough.
Hope this helps.

 

[Black 94]

The IAC is located on rear passenger side of engine. This is located above cylinder 1 spark plug on front driver's side. Theres is a small wire and plug like cap hanging nearby. Was looking to change ignition wires and saw this. Car run ok!

Also where can I fing Dignostic codes? Some are in service manual but not "55" which is what I am getting

Thanks,

 

[Tom F&L GoR]

Haven't looked in the manual for your wire, but "55" as a code simply means you've reached the end of the codes to be displayed. The "55" by itself is not indicating a problem.

 

[Black 94]

Just found about code doing a search on site.
Looked in service manual but did not find any info regarding this "sensor"

Thanks Tom

 

[Jack B]

If it is a single wire connector it could be the over temperature alarm

 

[Black 94]

It is a single wire with a rubber boot on the end...
Will try to follow wire, see where it goes to...
Did not find anything about over-temperature alarm in manual!
Thanks,

 

[Jack B]

That is it - the red (over-temperature) light in the lamp cluster is independent of the temperature gauge transducer.

 

[Black 94]

Plugged the sensor back on...now getting code 23 on computer!!What's up

 

[99GTSACR]

The book says code 23 is:
Intake Air Temp sensor Voltage Too Low.

Did you disturb the connector that plugs into the temp sensor located on the back of the air box?

 

[Black 94]

I checked,it is plug in ok.