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RD TRCTR · 03-13-2008, 05:48 PM

I took your guys advice and finally looked for the knock sensor today. I couldn't find it. I looked all over the intake side of the engine. I then called a dealer and gave them the VIN. According to them, it should have a knock sensor and it's located on the exhaust side of the engine (?). I figured that since I had replaced the TPS, that maybe I didn't set it right. So, I followed the directions in the repair manual and online. Took the truck for a drive, CEL is back on for code 12, knock sensor. Do I need to pull the plenum to find the knock sensor? I did replace the injectors in January. I also found the connector that goes to the knock sensor and it has a decent amount of grime in it leading me to think that it has never been hooked up. The truck was built in November of '84. Thanks a lot for your advice.

03-13-2008, 05:48 PM	#6
RD TRCTR Join Date: Nov 2007 Location: Troy, OH Posts: 94	'Yota Help I took your guys advice and finally looked for the knock sensor today. I couldn't find it. I looked all over the intake side of the engine. I then called a dealer and gave them the VIN. According to them, it should have a knock sensor and it's located on the exhaust side of the engine (?). I figured that since I had replaced the TPS, that maybe I didn't set it right. So, I followed the directions in the repair manual and online. Took the truck for a drive, CEL is back on for code 12, knock sensor. Do I need to pull the plenum to find the knock sensor? I did replace the injectors in January. I also found the connector that goes to the knock sensor and it has a decent amount of grime in it leading me to think that it has never been hooked up. The truck was built in November of '84. Thanks a lot for your advice.