Debra A. Pizzonia

I have a 2001 Frontier Crew Cab SE, 6 cyl. Dash light came on, took it to Monroe. Their diagnostic showed an error code for the Knock Sensor, as well as something to do with the exhaust system. Can someone PLEASE tell me where the knock sensor is located??? My son seems to believe it is located somewhere under the timing cover, and says it would be a 14 hr. job to do.

Is any of this true? I was also told if I did not replace this I would be taking the chance of destroying my valves. I sub-contract Courier deliveries with supplies to Nursing Homes all over my state. I need to keep my rubber on the road at all times!!! So...It worries me. Can someone help me please?

Kindfiend

I would write this in the proper engine/chassis section for more detailed info. That aside, I'm pretty sure Monroe doesn't have a Nissan specific scanner, so the code is generic at best. The Knock sensor pulls timing when it detects detonation (which could do a lot more damage than just to your valves). I seriously doubt it's a 14 hour job, however. As for the exhaust code... than could be a lot of things. I would post this in the correct section, list the numbers of the code the shop got, and any symptoms your car is showing.

If the car is running fine... sometimes if the gas cap is not tight enough it will throw some strange codes. Make sure it's secure and give it a few days, the codes may disappear.

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Kindfiend

01 Sentra GXE
92 SE-R

metro273

The knock sensor on your truck is underneath the intake manifold. On top of the intake sits your intake plenum. YES! You guessed right, the plenum has to come off to remove the intake manifold to access the knock sensor. With power tools, you should be done in approx. 3 hours.