cytamen 1 Report post Posted November 12, 2010 Hey there, I've bought an E36 1996 323i a few days ago, and everything is going perfectly except for a slight hesitation issue. It's pretty intermittent, but usually happens when I'm driving on the motorway in 5th gear at 100km/h. It feels like a brief lack of power, almost like when you hit speed cut in a japanese car, which comes back if I accelerate more. It can also happen when I'm driving around at 40km/h and the car will bunny hop a little, but in an engine losing power kind of way... I've had BMWorkshop have a look at it, and the fault scan picked up nothing relating to it. I've asked them to replace the spark plugs as a precaution, since they haven't been done in 30,000km's, and I need to monitor the car to see how it goes. They have suggested the coil packs will be the next point of investigation, but this can get pretty pricey. Just wanting to see if anybody here has any ideas I could try if the spark plugs don't sort this out. They have ruled out the fuel filter & fuel pump from the possibilities. Quote Share this post Link to post Share on other sites
*Glenn* 854 Report post Posted November 12, 2010 A faulty air mass sensor can do that. Being intermittent makes it hard to diagnose accurately though Quote Share this post Link to post Share on other sites
cytamen 1 Report post Posted November 12, 2010 That's a point. Is there a widely used diagnostic system for BMW obd2 that can plug into a laptop and record values? If I noted down the time while driving, I could check the graphs for any change and hopefully see what has happened. But yeah, intermittent issues are the worst. Just have to wait til it gets worse I suppose. Quote Share this post Link to post Share on other sites
