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I have a 1991 camaro rs 305 TBI manual. When I removed the wiring harness I noticed that I am missing a connector or something on it (near where the starter is). See pictures. It is a skinny green wire and it looks like it goes crimped into something. Any idea what this may go?
This is the starter cluster
The wire to the left I have no clue where it goes. One plastic connector is beneath my hand (oil pressure?)
Probably the knock sensor. Although that shouldn't be green.
If it's green w/ white stripe it might be for the fan switch in the head. Or, somebody might have cut it off of a car to get the connector since it's the same type, and spliced it onto the original KS wire.
I'm not familiar with what color the KS wire should be. I was going on proximity to the starter solenoid and the male weatherpack pin on the end. I don't know what else that would fit but I also don't own anything with toilet bowl injection. All my cars are TPI.
It is green with a white stripe. May be for the fan switch as the fan did not work for the previous owner. I think I already have the knock sensor as it is a blue wire and this weird looking white connector. It looks like this:
If I already have this is it the knock sensor?
And they do in fact use the same type of connector.
The thing in your photo is in the head, and is the fan switch. (not a [mr-spock] sen-sore [/mr-spock])
The wire you show plugged onto your fan switch is the one for the knock sensor.
The knock sensor is in the block, near the end of the starter, about an inch above the oil pan rail. From 1955 until the introduction of EFI it was cleverly disguised as the passenger-side coolant drain.
Your car is likely to work much better if you plug the right wires into the right things.
These pics are from a 1991 factory service manual. Camaro TBI 5.0 VIN E. Knock sensor is a dk blue wire. It goes directly to the ESC module. It breaks out of the starter wire harness Wire routing The coolant fan switch is a DK Green/white wire.
I'm going to guess that in Figure C of those FSM drawings, the wire going toward the upper left that just disappears below the word "fusible", is the fan switch one (grn w/ wht tracer), that you have currently hanging there without the connector body.
The knock sensor goes into the block. The fan switch goes into the cylinder head...
this is true, i just ran into the same situation, the blue wire is the knock sensor which is on the passanger side, and the green and white wire in the same harness goes to the temp fan sensor on the passanger side head, right under that header.
