Question about Infiniti Q45

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I have a 1999 q45 infinty. the car idleing rough and when iam going about 60 mph the car puts out a a bad smell like some bad eggs place can someone help me

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That smell is generated by overheating, which makes me thing that (since the engine isn't overheating) the fuel mixture is wrong - too lean. 
This is caused by either the fuel injectors being clogged (have you put some fuel recently?) or that the ECU is malfunctioning (most likely a/some sensors have failed).
The only thing you can do (without access to testing equipment) is to add some more fuel (good one this time, from a big petrol station with a lot of traffic) and add to it a can of injector cleaning additive.

Posted on Jun 04, 2010

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Posted on Jan 02, 2017

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