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for 2 others I have here. Same result.

I then removed the clear plastic vapour condenser from the line, same
result.

I then replaced the rubber line from the engine compartment to the ECU, same
result. 

I also tested all these components with a mighty-vac to confirm. All was
good.


So, where does that sound comes from ? Could it be underhood and I hear it
stronger because the glovebox and the AC evaporator are not there ?

Please help me find it before I explode another engine...


Louis-Alain