2012 elantra ltd.
Today noticed a knockng sound louder than the usual engine knock. It only occurs when we put car in reverse. Checked it with the brakes applied so as to eliminate it coming from any source due to the car moving ie axle/drive connections etc. Putting it in D with brakes on, not moving and it goes away. Put it back in reverse and it recurs.
Tried it even after the engine had warmed to temp guage showing half way. Let car sit for a bit (so engine was still warm) and it repeated. Drove for a few minutes and it would not occur. Shut car off for 1 hour, on restart the engine temp was showing it was still warm and the knock would recur in R.
Ideas?
Today noticed a knockng sound louder than the usual engine knock. It only occurs when we put car in reverse. Checked it with the brakes applied so as to eliminate it coming from any source due to the car moving ie axle/drive connections etc. Putting it in D with brakes on, not moving and it goes away. Put it back in reverse and it recurs.
Tried it even after the engine had warmed to temp guage showing half way. Let car sit for a bit (so engine was still warm) and it repeated. Drove for a few minutes and it would not occur. Shut car off for 1 hour, on restart the engine temp was showing it was still warm and the knock would recur in R.
Ideas?