stop using 87 and use 91 only that's why ur knock sensors is activiated ok ur car has a high performance engine i blew my q 45 engine out by using 87
To replace the knock sensor on a 1999 Infiniti Q45, first disconnect the negative battery terminal and remove the intake manifold for access. Locate the knock sensor, which is typically found on the engine block, and disconnect the electrical connector. Remove the old sensor using a socket wrench and install the new sensor, ensuring it is properly torqued to specifications. Reconnect the electrical connector, reassemble the intake manifold, and reconnect the battery.
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To change the knock sensor on a 1998 Infiniti Q45, first disconnect the negative battery terminal to ensure safety. Locate the knock sensor, which is typically positioned on the engine block beneath the intake manifold. Remove the necessary components to access the sensor, including the intake manifold if needed, then disconnect the electrical connector and unscrew the old sensor. Install the new sensor, reattach the connector, and reassemble any components you removed before reconnecting the battery.
A 1999 Q45 takes 6 quarts of oil (with a new filter).
Yes, 1997-2001 are interchangeable.
there are 2 of them. bank one and bank two. both are under the upper intake manafold in the center of the motor. I also have the 97 q45 and just replaced both of mine. real pain. have fun
The knock sensor in the 1997 Infiniti Q45 detects engine knock or pinging, which occurs when fuel ignites prematurely in the combustion chamber. By monitoring vibrations caused by this knocking, the sensor sends signals to the engine control unit (ECU). The ECU then adjusts the ignition timing and air-fuel mixture to optimize performance, enhance fuel efficiency, and prevent potential engine damage. This helps ensure smooth engine operation and longevity.
This is due to the ABS system of infiniti, It is usual when the brakes are new.
Service codes in cars help a mechanic to understand what issue the car is having. For example for the Infiniti Q45 the code u3fff could mean a sensor needs to be replaced.
Is it located near the oil filter
yes they will i have 20's on mine
need a picture of the hookup of the alternator for a 1995 q45 infiniti