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The 1999 Infiniti Q45 is equipped with four oxygen sensors: two upstream (pre-catalytic converter) and two downstream (post-catalytic converter). These sensors help monitor the exhaust gases and ensure the engine is running efficiently while minimizing emissions. If you're troubleshooting or replacing them, it's important to identify their locations correctly.
What else can I help you with?
Where are the airbag sensors on a 2005 infiniti Q45 front?
The airbag sensors on a 2005 Infiniti Q45 are mounted on the seat.
How many quarts of oil does a 1999 Q45 infiniti use?
A 1999 Q45 takes 6 quarts of oil (with a new filter).
Will a tension rod for a 1997 infiniti q45 fit a 1999 q45?
Yes, 1997-2001 are interchangeable.
Where are the knock sensors located on a 1998 q45?
On a 1998 Infiniti Q45, the knock sensors are located on the engine block, specifically beneath the intake manifold. There are typically two knock sensors, one for each bank of cylinders, and they are mounted on the lower part of the engine to detect vibrations that indicate knocking or pre-ignition. Accessing them often requires removing the intake manifold due to their placement.
How many coil packs on a 1995 q45 infiniti?
How many coil packs on a 1995 q45 infinity
Where is the knock sensor on a 1999 infiniti Q45?
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
Will 20 inch rims fit on a 1999 infiniti Q45?
yes they will i have 20's on mine
How many belts does the Infiniti Q45 have?
six
Why is our 1999 Infiniti Q45 vibrating when coming to a stop?
This is due to the ABS system of infiniti, It is usual when the brakes are new.
Can you put a 1994 q45 transmission in a 1990 q45?
I have a 94' Q45 motor and transmission in my 1991 Q45 - so the answer is "probably".
What is stumble at idle on 1998 Q45?
Many possible causes with similar symptoms (knock sensors, mass airflow sensor, coils, plugs, etc.). Read all about it on the NICO (Nisson Infiniti Car Owners) forum. Good luck.
Octane rating for 1999 Infiniti Q45?
The 1999 Infiniti Q45 is designed to run on premium unleaded gasoline with an octane rating of 91 or higher. Using fuel with a lower octane rating can lead to engine knocking and reduced performance. For optimal performance and efficiency, it's recommended to adhere to the manufacturer's fuel specifications.
