Knock sensor

I just replaced both knock sensors in my 1997 Tacoma, had one bad (bank 1) so went ahead and replaced both. Got it back together and now it's high idling and the timep gauge ain't working. Help....

 

1st make sure ALL the vacuum hose are on tight and no vacuum leaks, And that you connected them back to the same place.
Did you by chance try cleaning the throttle body ? Or mess with the butterfly.
When I did my knock sensors I cleaned the throttle body, that was a mistake for me, after that
the engine had a high idle 1200 rpms. My throttle body was worn and the carbon buildup
was filling in the worn gap by the butterfly and the housing. Now that I cleaned it I had a larger gap
and a high idle because of that. I had to replace the throttle body and then everything was ok.
Temp guage has to be a wiring issue I would think
Disconnect the battery for a few hours, not minutes

 

Is the temp gauge wiring by one of the knock sensors? Or its wiring?

 

The Engine Coolant Temperature (ECT) sensor is located on the front of the intake manifold, passenger side of the upper radiator hose, and just behind the cover that hides your timing. It is a 19mm socket and to get it out you should drain about a gallon of coolant using the petcock on the passenger side of the radiator, disconnect the upper radiator hose and remove the upper timing cover. This is a 2 wire sensor.


The water temperature sensor is just for the gauge and it is located on the back of the intake under all that crap. If your gauge is working then this sensor works and there is no need to get down to it. If you do have to get down to it you either have to be really squirrely or you need to take the upper and lower plenum off to succcessfully get a socket on it. This is a 1 wire "sensor". All this does is provide a ground for your temperature gauge on the dash

You probably didn't reconnect one of the wires or both

 

Solid, detailed info. As specific as you can get there