Question about 1999 BMW 323 Series
I have a 1999 BMW wont start has fuel coming cranks fine but wont start. Changed the fuel relay with a new one has fuel coming to the front (when i check the small vent for fuel air relase its got straight fuel comming out with no air) and also replaced the spark plugs. What else could it be ???
Had any check engine lights come on before you made any changes?
The ignition system uses an ignition coil, crankshaft and camshaft angle sensor along with the car's computer or PCM (power control module). This system can stop working due to a failed ignition module or crankshaft angle sensor.
Testing the ignition system is an easy job that takes about five minutes and can be done using a test light or an extra spark plug. Connect a test light to ground and with one of the spark plug wires or coils disconnected. Crank the engine over while holding the tip of the test light about 1/4 inch from the wire or coil terminal. Keep your hands clear of the test area to avoid accidental shock (non lethal). You can also insert a spark plug into the coil or wire and hold it against a metal ground. You should see a light blue spark in the gap .. which tells you the system is working. If no spark is present suspect that the crankshaft sensor needs replacing which is the most common problem.
But you could also check your relay/fuse box and see if any ignition related relays are bad. One way to check a bad relay is to find another one in the box that is exactly the same ans switch them ... and see what happens.
Good luck on your troubleshooting
Posted on Jan 21, 2018
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Posted on Jan 02, 2017
Fuel Injector cold start valve, this will directly affect the problem you are having.
Good luck, and let me know if there is anything else. Also, replacing the distributor cap and rotor are never a bad idea. along with the plugs and wires. with the price of fuel, it never hurts to get better mpg.
Posted on Dec 27, 2008
the fuel pump relay in the trunk on the left side (pasenger)it's right underneath the plastic housing on the inside of the trunk on top of the rear wheel mold. The relay is a 5 prong relay light green in color....... hope this helps, let me know if you found it.
Posted on Mar 17, 2009
SOURCE: 2003 bmw 325i a/c front vent
hi gc, if you are getting cold air and warm air out of different vents with the a/c on, I would recommend having the a/c freon checked. if the system is low, it can cause cold air out one side and warm air out the other. if it is low, the system should also be checked for the source of the leak.freon has oil in it that keeps the compressor internally lubricated and when freon leaks out, moisture can get in the system.
Posted on Apr 09, 2009
it doesant sound like its a problem from your spark plugs sounds more like a stepper motor problem make sure you have fitted everthing correctly after you have changed spark plugs sensors ect if you needed to remove elctrical sensors
Posted on Jun 09, 2009
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