So. I've found this part ("C") Secondary Air System Control Solenoid Air Pump Valve Sas on the diagram upper, from it I have a hose that links "22" on the diagram, and I have to find where this cruise control vacuum servo is located ? : Capture d’écran 2022-11-27 à 21.12.48.jpg ...

If you have it, it is under the battery tray. It is on turbos, but assume the same for NA motors.

Neil.

Looks like an air pump for SAS system but Jetronic management and '95 doesn't have SAS system.

I use the nickel or aluminum stuff from Permatex. Just a light swipe on the threads , keep it away from the electrodes. I you hav oil in the spark plug hole you can skip it. You don’t need a torque wrench on a washered plug, just take it down until the washer hits, then about a 1/4 turn more with a ...

On our side of the Large Body of Water, FCP only offers Blue Box Volvo and Bremi: https://www.fcpeuro.com/products/volvo-mass-air-flow-sensor-1275749 ipd sells one from VEMO, they are: https://www.ipdusa.com/products/21963/Mass-Air-Flow-Sensor-w-housing-for-Volvo-Vemo-V95720031-1275749-140275?crumbs...

I'm seeing the Volvo part going for $282 at some US dealers, also US ebay has some for $180, but there are no pictures of the Bosch box, so probably "rebuilt".

I can't recall if it is Permatex spark plug anti-seize I have. It is in the form of a crayon. You just rub it a little on the threads and that is all you need. Just enough to stop the interaction of the steel and aluminum with heat and time. This isn't the one I have but similar: https://www.agscomp...

Sensors are not interchangeable.
They use different method to measure the air flow...hot film vs.thermistor if i recall correctly.

Different voltage output.

Is that like one of those “Gator” multi-size sockets? I almost got one today. The Gator is the socket that looks like a spark plug socket filled with pins, right? I think he's talking about something like this: www.amazon.com/IRWIN-HANSON-BOLT-GRIP-Extractor-394001/dp/B0000CCXVZ I picked this one a...

Do not unplug the connector while engine is running! Remove connector,start the engine. If the idle is stable and runs better with Maf unplugged than it is bad. In your case....since you did a pcv job recently...i would check if there is a vacuum leak somewhere. Pcv valve,intake manifold,vacuum tree...