There have been a few posts on here regarding heat shields vibrating on components, this often happens after everything heats up and expands. The solution, they say, is to check out the tolerances of your heat shields (compared to what they are close to), and give them a bit of reshaping.
Thanks Disco Dave, time to go looking for heat shields
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I listened to the recording but couldn't determine whether it is a constant pitch noise or whether it varies with increasing engine speed ...
perhaps needs a simple tweak of a heat shield with a set of lock pliers to provide a bit more clearance....The noise is constant pitch but varies slightly with engine revs and then when it shifts into the higher gear is slowly ebbs away. Ignition car center are going to take a look at it next service. It is hard to record the sound with a phone. At the very end you can hear the noise stop and just hear the diesel engine sound.I listened to the recording but couldn't determine whether it is a constant pitch noise or whether it varies with increasing engine speed ...
Check you have plenty of clearance between rotating parts and for example under body insulation, hoses etc
Or it might be a "sympathetic resonance" dependent on exhaust flow pressure ...check brackets and heat shields etc impinging on the exhaust pipes...
I had a strange noise that was bothering me for a long time. not sure if it's the same but if it's coming from the air intake side (my gas engine us model is on the right side) it ended up being from the air intake. hope it's not serious.
Thanks Mike, it does not seem to affect the performance but just an annoying
I am going to give that a go Skydance
Thanks Mike, it is just an annoying sound that i have had since new. I have over 5000km on the car now but would like to get it resolved.
After reading this message, a long search for an agonizing noise was over. Removal of the small ball from the connection piece and the grenadier was freed from the corrosive noise. Thank you KDJD and have fun with your grenadiers.
On the drawing you can see the angle piece in which the ball is installed. You have to shake the contra-angle handpiece to see whether there is a ball inside or not. If so, drill out the connection and remove the ball. Then there is no problem.
Can I just check. Is the ‘noise’ you had the resonance sound that many are experiencing at 1500 to 2000 rpm in all gears when under load, or was it a noise at those revs but whether under load or not - I.e. occurred even if engine revved in neutral? Thanks
I still get a resonance around the 2000 rpm under load and i think it is something to do with the exhaust system. The odd sound i was getting, that is now fixed, was a rattling type sound in that rev range. It wouldn't do it if you just revved the engine and would come only when you were driving.
