[Solved] Volvo S60 2.4B LPG: Engine Idle Speed Wave Issue at 85°C - MAF, Temp Sensor & Damper Checked

hello, I have a problem, everything is fine until the engine reaches 85 "C. then the engine speed starts to wave. After unfastening the flow meter, it stopped, I measured it and showed less than one Volt at idle speed (with the meter, also under the vide) so I replaced it with a new one. .. and nothing else, the damper was cleaned, a year ago I regenerated it (new potentiometer), I also replaced the temperature sensor ... no errors under the vid. the vacuum shows 0.3, so normal.

the same symptoms on lpg as on pb. Adaptation made by detaching the battery and driving on the pb. Unchanged The valve of the changed phases also checked.

The S60 needs a specific adaptation when it comes to dampers. It often happened that the beef after adjusting the meter with some magical device deleted this adaptation and only the Volvo service helped
For inverters

Ie. You mean a throttle firmware update. Only the service remains

There is a guy in lbn who does it with no problem in the event of something pm.

The problem is solved, the EVAP valve turned out to be the culprit, i.e. gasoline vapors from the tank. I replaced it and the problem will disappear in my case: guitar:

The problem is solved, the EVAP valve turned out to be the culprit, i.e. gasoline vapors from the tank. I replaced it and the problem will disappear in my case: guitar: