Q45 Knock Sensors By: Wes Stinson A common problem that has plagued many Nissan and Infiniti vehicles is problems with the knock sensors (also called KS). Bad KS will not throw a CEL (Check Engine Light). Symptoms include loss or poor acceleration and can also cause bucking/jerking problems. Generally, knock sensors do not cause the […]
By: tangalora Taken from: http://forums.nicoclub.com/zerothread?id=6268 One morning, my 1990 Infiniti Q45 (125K miles) wouldn’t start: The 4.5 liter 8-cylinder engine cranked wonderfully, but would not catch. It wasn’t the starter motor nor the battery (as it rotated perfectly). As always, it had to be either gas, air, spark, compression, or timing. Following is an idealized […]
Q45 PerformanceBy Wes Stinson, Technical Advisor Feel free to contact me with any questions about any of the things on this article. So, you want to make your Q better?You want to make it faster, handle better, and make it look sharper.Despite what you may think, it is much easier than you think. This is […]
By: Brian (bigdog76) http://forums.nicoclub.com/zerothread?id=156041 1.Fixing the Heater was not all fun I will admit. 2.However it is possible and it’s not to hard to do. It took me much longer than I wanted but can be done in 2-4 hours, for under $10 if you have the tools to do it. 3.First start by removing […]
If your airbag light on your 90-96 Q45 or similar year Infiniti vehicle is blinking, chances are it has been inadvertently been set into self diagnosis mode.It does not indicate a problem with the airbag system.Unplugging the battery will NOT clear the self diagnosis status. To do this procedure, turn the vehicle on (engine not […]
1995 Road and Track Q45 Article Ever since its introduction in 1989, the Infiniti Q45 has been extremely popular at R & T. Its artful blend of performance and comfort placed it on our Ten Best list in the December 1990 issue, and its popularity as a long-term car remains unmatched. However, things were a […]
Development goals for the VK45DE engine were focused on balancing performance and quietness and smoothness. This SAE paper highlights the technologies utilized to meet these goals.
The Q45 was The Q45 was Infiniti’s flagship sedan for 16 years (1990-2006) – a stylish, full sized luxury sports sedan and the Infiniti brand’s first flagship. Sold in the US between 1989 and 2006, it unintentionally became one of industry’s best kept secrets. A surprisingly agile luxury sedan with a torquey 278hp 4.5L V8, […]