Where is coolant temp sensor and knock sensor on 95 nissan maxima

throttle position sensor

Is you check engine light on? Mine was doing the same thing. I found out it was the coil packs. It could also be O2 or temp sensor... Good luck

you have problem with cooling system could be coolant temp sensor

I would have the charging system checked for over-voltage and AC ripple. There maybe a hidden wire harness problem if the charging system is okay. Wiggle test the wire harness while the engine is running to help locate the problem area. That is way to many parts replaced.

It sounds like an engine temp sensor is open.. When your engine is cold or anti-freeze is cold your ECU or ECM gets a signal from the temp sensor for cold engine start. It would make sense that it works fine when hot because the resistance on the sensor is a lot lower. Take an ohm meter if you have one and check the resistance across the temp sensor pins. When the engine is cold the resisitance should be really high. Start and warm up your car to normal temp and check it again. It should be a lot lower now. If not replace it. Hope this helps.

The knock sensor error could be the sensor, sensor circuit, or some misfire caused by a dirty/bad injector or some ignition problem.

One issue that might tie it all together is coolant leak causing the misfire/knock like a head gasket, but I think you would be throwing more codes or you would see more problems than what you have.

It should be on the top of the engine, normally under the intake towards the back of the engine,get the new sensor first so you have a visual reference of what the connector looks like

i would change the knock sensor first. if that doesn't fix the problem then a complete tune up would be the next step. but if the sensor has no resistance that is where i would start

1995 Nissan Maxima, where is the knock sensor and how hard is it to replace?