Hello, my only recently purchased V70 XC B5252T LPT Motronic ME 4.4 (one of the first EZ 1997) had the following problem: If you go off the gas, the idle speed drops short very far, about 500 u/min. Only then the idle stability seems to grab and regulate. If you start at the wrong moment, the engine is off. Checked/renewed I have read out the following: error memory (no engine error found), throttle valve poti (bosch) new, idle stability valve removed and checked for smoothness (is clean and smooth), throttle flap from the front also looks clean. But somehow my gut feeling is that after that the problem with the crashing of the LL-turning number does not change. Worse, it could not change well. Next, I wanted to (so or so) to renew the oil trap, so have to check the intake bridge.