I bought an 82 240D last fall...one owner, well looked after. Recently the engine remained running even though ignition had been shut off. My mechanic determined the vacuum pump needed replacing and did so. Engine shut off for about 3 days but then it kept running on after key turned off. He's blocked the vacuum lines going to the door locks and trunk. Now the engine shuts off but I miss the door lock feature. Have the lines gotten old and collapsed? Is it a big deal to locate and replace? Is it something I could do myself?
Thanks.