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Idle rattle


Impredatle
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Hi al!

Recently bought a beautiful T25. Unfortunately the car started rattling when idle, so I am dying for some ideas/suggestions because I cant seem to figure it out myself.

As follows:

- Noise only appears for a few seconds (4-5)

- Only occurs when RPM's drop from a higher amount to idle (~700 RPM)

- No other complaints regarding the engine

- Noise goes away when revving +1000RPM. And immediately comes back when reaching idle RPM

- Oil is fine (level that is)

- Possible correlations: AC got filled up, used the wrong gasoline (E10) switched to E5 now 

- Noise appears to be coming from left side of the engine, equally loud top/bottom

My own guesses: AC clutch, loose heatshield etc., Seems to be a very distinct sound that I cannot compare to any examples I have found online

And of course videos, because how can you diagnose something without the noise itself.

Any suggestions/ideas and Ill be right on top of it to try it out!

Thanks in advance

 

 

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23 hours ago, Impredatle said:

Hi al!

Recently bought a beautiful T25. Unfortunately the car started rattling when idle, so I am dying for some ideas/suggestions because I cant seem to figure it out myself.

As follows:

- Noise only appears for a few seconds (4-5)

- Only occurs when RPM's drop from a higher amount to idle (~700 RPM)

- No other complaints regarding the engine

- Noise goes away when revving +1000RPM. And immediately comes back when reaching idle RPM

- Oil is fine (level that is)

- Possible correlations: AC got filled up, used the wrong gasoline (E10) switched to E5 now 

- Noise appears to be coming from left side of the engine, equally loud top/bottom

My own guesses: AC clutch, loose heatshield etc., Seems to be a very distinct sound that I cannot compare to any examples I have found online

And of course videos, because how can you diagnose something without the noise itself.

Any suggestions/ideas and Ill be right on top of it to try it out!

Thanks in advance

 

 

Mines was the AC Clutch.

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1 hour ago, jimtaxi said:

Mines was the AC Clutch.

Thanks!

Was the sound the same?

And did it matter if the AC was on/off? Or was it always there.

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