5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
Hey Guys and Ladies! I'm new to the forum thing but had a few questions for you all. I recently purchased an mint condition 94 bmw 525i for a really good price, if i told u how much i paid for the 525i, u wouldn't believe me. Anyhow the problem is when taking off from a stand still, the car sputters' and then it clears up. I have changed a knock sensor, O2 sesnsor, cleaned the throttle body, changed the fuel filter, changed the plugs, and the coils that didn't have a strong spark enough spark for me. Now im puzzled because after changing the O2 sensor it cleared up for about a day then started back, so now I'm not sure what else to do at this point. Any help or opinions on what i should take a look at, or change would be very helpful.
Next, check your spark plugs and coil packs. Make sure the plugs are in good shape, if not replace them. When checking them look for oil in the plug well. If you replace them ensure that they are torqued down properly. Check the coil packs, as they can break down over time and cause loss of spark consistency. If they look damaged then replace them.
Then, if this all checks out fine and/or you still have the sputtering. Check your crank sensor. The resistance in ohms should be about 540. If the sensor is faulty the injectors won't fire properly.
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