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[02Z71Raven]

I wouldn't worry about the connector unless it is visibly fried or has signs of deterioration

It's not great looking, lol and it's only $5 and I'm a pro at wiring, soldering etc... I often replace them if they make uncomfortable. I'll try just the sensor first though and see what happens. Soldering in that spot isn't going to be easy, so it may be best to do them one at a time anyway, for science.

 

[iLikeEggs]

I wouldn't worry about the connector unless it is visibly fried or has signs of deterioration

Most coolant temp sensors come with a connector and pigtail. It's a good idea to replace the old one as the wires break close to the connector and it's hard to see sometimes. If you're over 100k I would replace the connector.