TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

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Old May 31, 2015 | 05:04 PM
  #1  
Grizzlyboy100's Avatar
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Need help

I have an 89 rs with 305 tbi. Not getting any fuel or spark. I changed the icm ECM new cap and rotor and coil. It cranks but still won't start. It did fire over and run for a bit and died now nothing. Any thoughts?
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Old Jun 1, 2015 | 01:42 AM
  #2  
Schurkey's Avatar
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Re: Need help

No fuel, no spark?

I'd be looking for a defective pickup coil. MAYBE a defective ignition module, but I'd start with the pickup coil.

The pickup coil develops the cranking signal the ECM uses to time ignition and injector pulses. No crank signal, no fuel, no spark. Therefore, the wiring between distributor and ECM could also be faulty.
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