90 Dynasty Start and Stall

90 Dynasty Start Stall 90 Dynasty Start and Stall

Can the QCSC DAS SYSTEM identify a failing injector driver circuit? YES

The 90 Dynasty would start and stall. While cranking it would pulse a test light. But what was failing? The QCSC DAS SYSTEM shows that the reference pulses were good, the ignition kept sparking and it was the injector driver circuit in the computer that had failed. The QCSC DAS SYSTEM shows the engine cranking and being revved, as soon as we revved it, the injector quit. This is just another example of the need to see the entire process. The voltage levels on the reference and coil channels indicates the ASD was closed and the computer was still getting power.

QCSC
52 Ave E
Lodi, NJ 07644-1908
Ph# 973-472-0328 Fax# 973-472-5020
Ask for Dan

EMAIL to; qcscdas@aol.com or EMAIL to; lody@delphi.com or EMAIL to; danbuckley@worldnet.att.net
or VISIT; QCSC at Delphi or VISIT; Dan Buckley at ATT

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