Another z28 wont start issue.

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Old Jul 12, 2012 | 09:25 PM
  #21  
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kk, i appreciate your help, u may have saved meh :]
 
Old Jul 13, 2012 | 06:14 AM
  #22  
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I spent close to $500 on mine before finding the opti connector was not making good contact...lol
 
Old Jul 13, 2012 | 03:03 PM
  #23  
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ahahaha, shizzle, coulda been me :]

but bad news, turned it off and it couldnt get fuel pressure again,
i was able to start it and make it home, but now the fuel pressure gauge is all the way past F, wont come back down, and it isnt priming, but i jumped the fuel pump at wires connecting to FP and it primed, but wouldnt fire injectors.

could this be PCM? or could opti plug not connecting make the fuel pump not prime?
ground ?
idk's!
 
Old Jul 13, 2012 | 04:04 PM
  #24  
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check all fuses in both fuse boxes. check the connectors out in the fuse boxs. check fuel pump relay, under the driver side kick pad. http://shbox.com/1/fuel_pump_relay.jpg also check out 33-34 here 4th Gen LT1 F-Body Tech Aids
 
Old Jul 13, 2012 | 05:41 PM
  #25  
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The first thing I will do again, second thing has been done over and over, it clicks every time like its trying to prime, there's power comIng to the relay and relays good
 
Old Jul 13, 2012 | 05:43 PM
  #26  
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This could b a PCM issue? Or pressure release valve ?
 
Old Jul 13, 2012 | 05:52 PM
  #27  
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Also read the voltage at fuel pump while it was running like **** with no fuel pressure, and only 5-9v at that time
 
Old Jul 13, 2012 | 05:53 PM
  #28  
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I didn't think
 
Old Jul 13, 2012 | 05:54 PM
  #29  
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I didn't think It would be the pressure regulator doing this
 
Old Jul 13, 2012 | 05:55 PM
  #30  
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Dont*
 



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