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M45

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Question
Car hard to start
The AC relay is housed in the power distribution module in the engine compartment. The AC compressor can be observed to see if the clutch is engaging. If the clutch is engaging then a set of gauges need to connected...
Question
Second cracked exhaust manifold with rumbling sound
Hi. We will be happy to assist you with your 2003 Infiniti M45. I believe it would be best to replace the cracked exhaust manifold. Your vehicle has two exhaust manifolds. It's likely that the one you replaced cracked before the...
Question
After diagnosis of no problems, car won't start properly
The key light coming on means that the vehicle is not recognizing your key. The light illumination comes in conjunction with a numeric code, which will specify the reason the key light illuminates. It is possible that you have a broken antenna...
Question
Loud noise from engine plus vibrations & shaking
Hello. The excessive vibration may be due to a faulty motor or transmission mount. The vibration likely can be coming from  the braking system as well. Warped rotors commonly cause such vibrations when stopping.  The loud noise coming from the...
Question
Fuel tank gauge registered inaccurately & repair did not work
Hi. Thanks for writing in about your 2003 Infiniti M45. Fuel level indicators may go bad if they become dry. Fuel level indicators are meant to stay wet. If the fuel level reaches a certain low, the fuel level indicator will...
Question
Non start and changed cam crank and var time sensor
View the anti-theft security light to make sure it is not illuminated. If it is then you may have a problem with the vehicle battery voltage getting too low causing the system to become active when you try and crank...
Question
Serious air pressure is coming out of my oil stick and oil cap. The car squeaks until I pull out the oil stick and air comes out
Hello there, thanks for writing in. A few different faults can cause your 2006 Infiniti M45 To have a pressure buildup in the engine. The most common would be a PCV valve, high oil pressure, or a vacuum leak. A...
Question
Bad gas mileage
Hi there. Quite often a damaged catalytic converter will mask other mechanical issues that impact fuel economy. One culprit in particular is the EGR valve. The EGR valve works in conjunction with the catalytic converter to help reduce particulate matter...

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