Help with noise from front end
#1
Help with noise from front end
When I get on the throttle from about 1500-2800 rpms, while the motor is under a load, I get a ticking/hissing sound that is very similar to the way an old worn motor sounds when it has leaky head or exhaust gaskets or it is missing/down a cylinder or two. However, as soon as I lay off the throttle, it goes away. While parked or sitting still, I can rev motor and it sounds awesome, no noise or anything. Sounds like it should. While moving and under load, the motor feels strong, nice throttle response etc. I have checked all the wires, plugs, installed new O2 sensors etc....noise is still there. My mechanic is thinking it could be a CV joint. However it doesn't make the noise while turning, which is usually the tell tale sign of a CV joint going out. He may be right, but he was puzzled as well. Could it be the front Prop Shaft U joints?? Or is it known to be the CV joints???
I will add that there is no pronounced vibration associated with this. At least I haven't noticed it, but I wasn't looking for it though. I will need to go pick it up from mechanic and go see if there is a vibration.
Anyone have a similar experience?
I will add that there is no pronounced vibration associated with this. At least I haven't noticed it, but I wasn't looking for it though. I will need to go pick it up from mechanic and go see if there is a vibration.
Anyone have a similar experience?
Last edited by CRB357; 06-09-2015 at 07:29 PM.
#2
#3
There are no codes.
When I first got it, I unknowingly filled it up with 87, however I went through that tank and I recently filled it up with 91 Non Ethanol, and have since burned about 1/4 tank. It sounds the same and hasn't changed at all.
When I first got it, I unknowingly filled it up with 87, however I went through that tank and I recently filled it up with 91 Non Ethanol, and have since burned about 1/4 tank. It sounds the same and hasn't changed at all.
Last edited by CRB357; 06-09-2015 at 09:12 PM.
#4
Ok, update. New O2 sensors, 91 octane non ethanol fuel. Also found both SAI valves were not bolted down and were just flopping around. Fixed those. It sounded better initially, but the 2nd time I drove it it sounds just like it did before, except it isn't hissing anymore. Now it is more of a deeper rumble type sound. I made a video. The best audio is towards the end. You can hear me getting on and off the throttle.
Last edited by CRB357; 06-14-2015 at 04:08 PM.
#5
#6