As for the red circle in the last photo:
I know that connecter looks just like the connector for the mixture control solenoid, on the computer controlled carburetors but, on a 1986 full size pickup they had a solenoid control dual capacity accelerator pump and that is what that connector is for. Notice there is no connector on the front of the carb for the TPS for a computer controlled carb. Also notice no idle air bleed screw or place for it.
Quote:
Originally Posted by Slonaker
The red one isn't a MAP sensor. The truck does not have one in '86 (not sure about CA emissions) It controls a two stage accelerator pump or something like that. The temp switch in purple controls it.
Slonaker
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I agree with Slonaker no sensor Map on 86 full size pickup. Also right about it having a
dual capacity accelerator pump and the temp switch for it.
Quote:
Originally Posted by piecesparts
The third one is the Knock sensor on the right hand side of the motor.
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Quote:
Originally Posted by Mickey_D
One of the ones by the exhaust manifold (gray or orange) is going to be your ignition knock sensor. Purple in the last pic is a temp sensor.
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piecesparts & Mickey_D, Yes - Applause for you both
First picture gray circle, I agree with Srubydo1986 , is the temp sender for the dash.