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Engine vibration


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I have a Toyota Avensis, japanese import, Model AZT 250, 2 litre petrol engine 1 FSE.

When I start the engine and while warming up, it vibrates at about 1000 rpm and at 1200 rpm. At idle spead, 750 rpm, there is no vibration. When warmed up, the  vibration is so unnoticed, you have to know about it and look for it.

Techstream revealed no codes at all.

Fuel trims very good, spark plugs Iridium with 50 000 km are clean, throttle body clean, fuel injection system cleaned with tune up, engine mountings good, replaced the one close to the radiator but the problem persists.

All vacuum hoses ok. Canister not leaking.

Anybody had this problem  please help.


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