Hello together, I’m looking for possible solutions for a problem with one of our two Volvo 850 … vehicle: Volvo 850 LW (comb) 2.5 l, 140 kW, key number 9101 / 495 Bj 1994 Symptom: engine runs from start round, turns easily high at the beginning. After about 20 min. it “swallows” itself while gas. Critical speed range: approx. 1600 – 1800 rpm. Above it runs round, below it also, only the gas giving causes dropouts, especially on the mountain, so under load, or at fast durc The drop-outs become more and more frequent / heavier and it finally goes out with the gas, then does not start any more. After about 60 minutes it starts again than its NOTHING was… runs well-tempered in the stand and turns again high… until after some time, so again after 20 to 40 minutes everything reoccurs again. Suspect: error in the ignition electric. Diagnosis of the workshop: ignition coil is through. Thermal expansion, thus possibly mass closure or reduced conductivity. Recommendation of the workshop: Change ignition coil. Action: New ignition coil of PolarParts installed. Ignition cable coil>Distributor also renewed. The gas acceptance now feels “agile” but the swallowing and the described symptoms are still there. Other: vehicle was completely overhauled 3 months ago, new HU, engine-side work: valve shaft seals new, timing belts, water pump, oil trap new, camshaft sensor cleaned, candles new, distributor un d Finger new, ignition cable distributor>Cancel new. What to do? What to do as a source of error? Exchange ECU? I am grateful for ideas and tips!