can injector pulse be tested accurately with a volt meter?

5

Asked by Nov 15, 2013 at 01:42 PM about the 1994 GMC Jimmy 2 Dr SLE SUV

Question type: Maintenance & Repair

replaced fuel pump and spider assembly due to leaks and low pressure. Pressure is 55-60
now and holds. Will start but stumbles on acceleration and dies. After that it won't start
back up (more often than not) unless it sits for a while. With volt meter I'm getting a
constant 9+ voltage reading at injector harness. Not sure if the pulse is just too fast to be
measured with meter or if this is the source of my problem.

1 Answer

10,695

Ecm fires the injectors on the neg side. You might see a flicker between a + source and the neg trigger wire?

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