my injectors wont pulse what can i do to fix

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i replaced coil, distubetor ignition coil im getting spark, fuel from fuel pump but injectors wont pulse ran a ground check from ecm and ran a hard ground to one injector and it sprayed but wide open , it wont pulsate please help. its actually a 1987

Visitor

in Florence MS

Feb 15, 2017

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What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 1990 GMC S15. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

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my injectors wont pulse what can i do to fix

What is your question?

Visitor

in Florence MS

Feb 15, 2017

1 Reply

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pushrodon Feb 15, 2017

Unplug throttle position sensor and try it, if signal stuck at wide open throttle there will no injector pulse as system defaults to clear flood .. Try same with coolant temperature *SENSOR*.. Not the temperature switch for dash gauge... IF that doesn't help .. May need distributor assembly!

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Popular Answer

What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 1990 GMC S15. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.