No spark please help w124 2.8

[Markmad50]

I have a no spark problem i can't seem to fix . I have put a 1995 2.8 engine box into a 1990 coupe . I had the whole car I removed the lovely running engine from . It all lives up turns over but no spark . It has 12v live and earth to coils with key on . Fuel pumps prime and you can hear all the throttle body live up . The rev counter goes up and down with turning over . Anyone know what I can try

 

[Wearsafoxhat]

Could it be something to do with the security, ,EIS or key not talking to the new engine management.


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[ajlsl600]

Prob an idea to try 2nd eng key, lock, module (wher applicable) . I sure I remember on w168 that was the case.

 

[DREAMER NO2]

What about the crank possition sensor ? The EZL is sent a pulse by the CPS to fire ,so no pulse from it ,. then no spark . Or alarm imbiiliser faulty ..

 

[Markmad50]

It sure it doesn't have a immobilized ecu . The engine loom does not include one and plugs in the same as the old one which don't have one . The doner car did have a radar key which worked the aftermarket cobra alarm which is wired into the cars loom inside the car . And it doesn't have a ezl

 

[Markmad50]

What about the crank possition sensor ? The EZL is sent a pulse by the CPS to fire ,so no pulse from it ,. then no spark . Or alarm imbiiliser faulty ..

Tested the crank sensor and is ok plus the rev counter moves when turning it over . It doesn't have a ezl