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My 1999 bmw z3 will not start , code A9 & 44 shows up air pump keeps running when ignition & drains the battery out while ignition is also:engine light & EML light comes on. will crank but will no

Jumped the battery,opened & closed the gas cap,checked all the electric connections.

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SOURCE: my 1999 bmw z3 will crank but will not start , code A9 & 44 shows up , air pump keeps running when ignition is on & drains the battery out.engine light & EML light comes on.

Not sure on this one.....if it's "drive by wire" that means the accelerator pedal is connected to the intake electronically, and that may be where the A9 code comes from. Saturns are drive by wire and it's a common failure point for them. spark, compression and gas is all you need for the engine to run. you can put a fuel pressure gauge on the rail to determine fuel, assume that the compression is good, and pull a spark plug and ground it while cranking to see if gets a spark...

Posted on Feb 18, 2015

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My 1999 bmw z3 will crank but will not start , code A9 & 44 shows up , air pump keeps running when ignition is on & drains the battery out.engine light & EML light comes on.


Not sure on this one.....if it's "drive by wire" that means the accelerator pedal is connected to the intake electronically, and that may be where the A9 code comes from. Saturns are drive by wire and it's a common failure point for them. spark, compression and gas is all you need for the engine to run. you can put a fuel pressure gauge on the rail to determine fuel, assume that the compression is good, and pull a spark plug and ground it while cranking to see if gets a spark...

Feb 18, 2015 | 1999 BMW Z3

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My 1999 BMW Z3 will crank & will not start.I used Bavarian code reader code A9 & code 44 show up.What do I need to replace?


an engine needs fuel, compression, and spark to go....check those things first. Put a fuel pressure gauge on the rail, then remove a plug and ground it to see if it sparks, lastly, run a compression check on it. make sure the cam is turning as well.

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1 Answer

Bmw z3 1999 will not crank


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1998 bmw z3 roadster 2.8 engine light came DTC code p0170


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if you can heard the fuel pump noise and sure that you have enough fuel, then it may be you have a problem with ignition system or faulty crankshaft sensor.

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