Sounds like the timing has jumped a tooth or two. Be careful running the engine since the valves can be bent beyond repair.
SOURCE: 96 nissan engine knocks
a noise in the engine is not a good news but you have 70% chance that you engine crank shaft and parts arround it are bad. in some case if your car is auttomatic ,a crack in the flight weell may cause the "knocking sound " please ck you fly w before you make decisions .if you engine is bad ..,, change it .it will cost you more to try to fix it
SOURCE: Nissan Sentra shifter lamp replacement
Transmission shift indicator light on center console.
First make sure the fuse is good.
If the fuse is good then remove the screws holding the center console cover. You will need a long and short phillip screwdriver. Look for screws in the cup holder, under the handbrake handle and where the console runs under the dash. You may have to move seats forward/backward to reach the screws. When you attempt to raise the console cover you will notice you overlook a screws. Remove them also. You may be able to reach the bulb without removing the gear shift handle. DO NOT TOUCH any other electronics you see. The AIRBAG ACTUATOR is located here also. Replace bulb. Test before reassembly. Good Saturday morning project.
SOURCE: Knock sensor code came up, where is it located?
The knock sensor is located under the intake manifold.The best way to get to it is to lift the car completly up go undert it and look right under the intake manifold.There is a steel tube about 2inches thick that will be blocking your view but its right behind it.GOOD LUCK.
SOURCE: 1998 nissan sentra lost pick up speed and is jerking
first remove your map sensor and clean it with carburetor cleaner let it soak for a few hours and then reinstall it sometimes they get dirt or carbon build up and the pcm cant tell how much fuel to send
SOURCE: Diagram available for 01 Nissan Xterra Knock Sensor location?
V6 3.3L The sensor is located underneath the air intake manifold on top
of the engine block. This should take an experienced mechanic about 3-4
hours to replace.
Fig. Engine compartment component locations
Hope this help (remember rated this free help) Good luck.
A/T Diagnosis Communication Line Malfunction Possible Causes:
Trouble Code: P0100
Mass Airflow Sensor Circuit Malfunction
Possible Causes:
Air Intake leaks located after the MAF sensor assembly
MAF sensor signal circuit is open, shorted to ground or power
MAF sensor has failed
PCM has failed
Trouble Code: P1605
TCM communication line circuit is open or shorted to ground
TCM communication line circuit shorted to VREF or power (B+)
TCM or PCM has failed
TSB 01-004 (01/01) contains information related to this code
For the P0100, check the connector on top of the MAF sesnor for looseness or corrosion. Connector is on top in piocture below.
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