3-Series (E21, E30)Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.
Well, my car has the hiccups. I dont know what to do. It goes for weeks, with no problem what so ever, and then suddenly, out of the blue, *HICCUP* - like it suddenly loses all power and then all of a sudden its over. Sometimes she dies, then I turn off the power, and then start her back up again, and off I go. Does it at all speeds, all levels of power. Any ideas? Could it be the cone air filter?
Sorry, forgot to mention, the air filter is right next to the block, and it gets disgustingly hot in there, considering for the past few days its been 104 F (40c) lately. Could it be anything to do with the temp of the air going in?
It seems to be that the spark is getting cut off. Either that, or the fuel, I cant really tell. Which relay is the fuel pump?
Hard to tell with your model of car. All the relays and fuses are in the engine compartment (usually close to the windshield) and any repair manual will tell you where to find which one.
If it's spark you should check from coil over rotor to sparkplugs. Since it's erratic and not systematic I'd guess it's electrical, so if you've got time you can check it. What I also experienced was a loss of current from the lead to the rotor where the lead connected to the rotor. It was visible when I let the engine run with the dust cap off the rotor. Cleaning it thoroughly did the trick there.
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