1992 Merc 40 small wire by top spark plug off

[stockdragrace]

SN#0D105940 I found a small wire broke off by the top spark plug, can I solder it back on? Looks like it attaches to a small hex head that goes into the head.I was looking on the Merc site, and was wondering if this is some typeof temp probe?Thanks in advance for your help, Brad

 

[phatmanmike]

Re: 1992 Merc 40 small wire by top spark plug off

exactly. its for the temp probe that more than likely goes to the alarm.

 

[stockdragrace]

Re: 1992 Merc 40 small wire by top spark plug off

Do you think it's ok to solder it back on, or do I need to get a new sensor, it's got just a tiny hex head nut holding it on, it may be hard to get off.

 

[Silvertip]

Re: 1992 Merc 40 small wire by top spark plug off

Take the terminal end off the sensor. Crimp and solder a new terminal end on the wire and reattach it to the sensor. Heat from the soldering iron may damage the sensor.

 

[stockdragrace]

Re: 1992 Merc 40 small wire by top spark plug off

Upinsmoke, thanks also for the response, it's so small I couldn't see that it was originally a slip on connector? No problem, as you say I'll just crimp a new slip on fitting on the wire end and slide it on, thanks again, this sensor senses the cylinder temperature? Brad