I have a 2007 Nissan Murano with 227 thousand km on it. When I start it up when it’s cold. It makes a knocking sound. But after about 45 seconds of idling it goes away. But sometimes whether its warm or cold. It will knock when you are turning and giving it gas at slower speeds ( like at a stop sign ). This car hit a sign (knocked it over. Those striped black and yellow bridge signs) while it was driven into the ditch and needed some front end work. So it sat for about 3-4 months before we fixed it. Ever since it went into a ditch it’s been doing the knocking. Can somebody tell me what part may be knocking. (Heads, etc) and how long do you think it will last.its still chugging along It had I think around (193ish km on it when it was ditched) it was used as a commuter car since then. But not anymore. Used as a daily driver now. Thanks
What transmission does it have? What work has been done? Was engine damaged in the accident? What about engine mounts?
I would check your oil level as well hopefully it has been maintained. Otherwise check the oil pan for damage if it’s impacted it could be obstructing the oil pick up causing the cold start rattle
This could be a lot of things, or a combination of things. Perhaps there's a defective knock sensor, undiagnosed. (That's a "Captain Obvious" kind of suggestion).
The turning issue could be related to the axles, a bad motor mount or mounts jostling the engine, or a variety of other possibilities.
There are many, many other possibilities. Too many to make any kind of definitive call.
The best thing to do is to find a good independent diagnostic mechanic to do a general inspection. (Who knows if parts were replaced correctly, or whether the parts are themselves defective, particularly if they're not OEM?)
The vehicle should have both a physical inspection (on a lift, to examine the work that was done, and the state of the mounts, the cv axles, etc.) AND a complete scan with a good bi-directional scan too, with Mode 6 and Mode 9 capabilities, for mechanical and electrical problems.
You need eyeball data (physical inspection) and digital diagnostic data, to begin to tackle this issue.
