Question about 1994 BMW 3 Series
Engine fluctuating about all the time and somtime when i shut down the eninge its not get off directly, means like still some fuel and ignition with swich off.
espically when i fill the tank to fully fuel the engine gets shut down sometime, and the engine start fluctuating during its operating.
i change the spark plugs, clean the air filter, check the air mass flow is good.
what can i do else???????????
note******* i have engine (vanos)6 cylinders in BMW 320i ,1994
Hi! I believe that you have a Powertrain Control Module (PCM) problem. It will need a diagnostic to trace the problem. After the diagnose an error or fault code will appear, from there you will know whats the problem and what needs to be replaced. The PCM is like a car's brain, lets just hope that its not the PCM itself that has a problem. Hope this helps and have a good one!
Posted on May 18, 2010
Did you change your fuel filter and check your gas tank for rust particles that may be fouling the engine ????
1.) remove hose leading to filter and stick that end in a glass gar..
2.) turn on ignition and let a bit of fuel get in the jar,,
3.) turn off ignition,,
4.) examine fuel for discoloration and particles,, if you have tank remved and cleaned..
5.) change fuel filter,
Posted on May 16, 2010
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Posted on Jan 02, 2017
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Engine stalls or RPM fluctuates at idle up and down.
is commonly caused by a dirty automatic idle speed control valve and
throttle valve but always run a OBD2 fault code as well as the
cleaning procedure. Buy a can of throttle valve cleaner (do not use
carburetor spray cleaner!) from NAPA or Carquest (made by CRC
chemicals) and spray it into the air intake while the engine is
running, use up about 1/2 the can, engine will try to stall hold the
speed up, shut it down and let it soak for 30 minutes, restart and
blow out the remaining fluid, shut it down and disconnect the
negative battery cable for 5 Min's to reset the base idle control
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