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stvwes
07-19-2012, 09:40 PM
2003 X30 5.7 MCX, I have checked all sensor inputs and circuits more than once just to be sure (everything good there). It has ignition spark and will start if I add fuel manually into the throttle body, the fuel pump is activated by the relay on crank and it has 45-48 psi fuel pressure just no injector pulse (checked with noid light). The original pcm was faulty due to corrosion intrusion through the actual pcm housing, I assume caused by electrolysis and salt water exposure. I purchased a new in box unused MEFI4b pcm still same problem. HELP! Many thanks for any good ideas.

j.mccreight@hotmail.com
07-21-2012, 08:28 AM
MEFI 1-4 Diagnosis and Diagrams

SilviaMan
07-23-2012, 11:46 AM
did you check one side of the injector plug for B+ (12v) with the key on?