changing a head temp sensor, modifying a extension works well Options

[914Mels]

I've been working with my new air fuel ratio gauge and found a lean spot while the engine is working up to operating temp. Having read Brad Anders D jetronic check list, I pulled the head sensor and added the spacer he recommends. To get the sensor out while the engine is in the car is not for the faint of heart, you can't see it and the wire sticking out the middle needs to be protected. Rather than butcher up a deep socket and weaken the walls with a channel cut in it, I butchered a 3" 3/8ths extension with a die grinder. This gives the wire a place to go and keeps it pretty straight. The extension stays alot stronger with the notch than a socket. Check out the pictures to see what I mean. I'll see if the lean running was helped by the spacer or not.