Z3 1998, 2.3. Cranks but wont start.

Lucho

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Feb 5, 2023
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My next thing would be try another key (if you have one?) also try unplugging the MAF as this puts it into(limp home mode) and may allow it to start.

Tony.
I don't have another key but I will try unplugging the MAF, Thank you!
 

Lucho

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Feb 5, 2023
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Hello! back again, trouble shooting my no start, well last night I was able to remove a sparkplug and look for a spark while cranking the engine. I got no spark... ??
Its a beatiful day here in Miami and I can't take my Z3 for a spin ;(
 

Lucho

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You need to check if your getting a spark at the plugs and fuel to the injectors, since yoyu have no codes it would appear that the cam position sensors are ok. Another possible cause is the EWS system not releasing the ignition to allow the spark to occur. Some in depth diagnostics of live data would be required to check the system.
Hello! no spark...
 

t-tony

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Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
Do you have a spare key with the car? Does the key lock/unlock the car?

Tony.
 

Lucho

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No spare key, it does lock or unlock the car but no by remote…
 

t-tony

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E89 Z4 23i Auto
Can you post a picture of the type of key you have please?

Tony.
 

t-tony

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I think it’s time to find a supplier of new keys and ask for their help. It sounds as though the key and the EWS are not speaking to each other.
Have you searched through this forum for threads on this subject?

Tony.
 

Lucho

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No, not really I’m new here, but I will ask. Thank you Tony.
 

Lucho

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Hello, any thoughts about this? It sounds as though the key and the EWS are not speaking to each other. What to do?
 

Lucho

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Hello, yes, it has been confirmed that the key and the EWS are not speaking to each other or it is in anti theft mode… does anyone know what’s the best course of action? Should I go to the dealer? 😬
 

t-tony

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Location
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E89 Z4 23i Auto
I would try to find an independent car key specialist before heading to the dealers. It wil be much less painful on your pocket.

Tony.
 

Zephyr

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I am not trying to give you false hope, but since nothing worked so far, please check all fuses, and if they are ok, try this
If you know your radio code (because you will have to enter it after this - if you dont it will be locked)
unlock car.
remove battery red terminal and let rest for 10 minutes.
put cable back.
go to drivers door and turn clockwise (to the right) the key car will lock
the key is now to the neutral position (vertical center)
repeat locking as in step 1 - this activates the alarm
remove key.
wait until the red light on the radio starts flashing - if it does not, or you have an afermarket one, wait five minutes
now insert key and unlock car (anti clock wise left).
repeat immediately
(meaning you unlock two times anti clock left)
enter the car and put key in.
position one - lights go on in the cluster
listen for fuel pump - (has to be sending fuel)
try to start car.
if this does not work then visit workshop or whoever knows.
still I find it very strange that no codes appear….
 
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