No engine speed reference pulse to ecm?

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What does speed refer to?

Speed is equivalent to distance over time. It refers to the rate ofmovement of a person or a thing.

Speed pulse on Skoda superb?

remove the stereo with two radio pullers in the side slits on stereo there is a blue and white wire that gives you a pulse
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Is it possible to override the ecm on a cummins engine?

Depends on what you're trying to override. You can't simply just bypass the ECM, since the engine won't function without it, but some features can be overridden or bypassed. F

Will the ecm keep the engine from starting?

it is possible, if you leave certain sensors unplugged it will not start, just turn over. first thing to check is battery fuel pump fuses if those dont work then get