The knock sensor protects the engine from damage caused by pre-ignition.
First off, if you have heard a rattling sound, drive gently to reduce pinging to reduce damage to the pistons, pins and rods. Numerous things can cause pre-ignition. Carbon build up increases the compression ratio and will glow as the engine heats up. Ether of these can cause the pinging. Carbon build up can also foul the EGR system.
If you have a carbon problem there are several ways to combat carbon. #1 Run a full tank full of Chevron Premium gasoline with ‘Techron’. #2 Add 8 oz of Pennzoil 2 cycle out board oil to twenty gallons gasoline. #3 Do A Seafoam treatment. http://www.nissanfrontier.org/forum_posts.asp?TID=2510&P N=1
Have a good one while you can still laugh about it.. Don S..
By November many of us will not have the money to buy gasoline to go vote!
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Nissan Frontier Forums : Problems / Technical
Topic: 2001 frontier SC sevice engine light
I have a 2001 SC. Which is 4X4 with 3.3 and super charger. My sevice engine soon light came on and the codes that showed up were 0325 (Pending code = Knock sensor 1 circut malfunction bank 1 or 1 sensor) and 0455 (diagnostic code = Evap emission control system leak (large) ). I erased codes and so far the serice engine soon light has stayed off. Can someone tell me what I could check and how to fix this problem. I will drive the truck untill light comes on and than read codes. Is it possible that there is nothing wrong with my motor? The engine seems to run good.
