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1990 GT No start No Spark

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Old 09-13-2018, 04:03 PM
  #16  
Shark2626
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Old 09-13-2018, 04:40 PM
  #17  
jetson8859
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No update, have been on travel and will be back at the car this weekend. The biggest issue we are having is no spark, as opposed to typical no start. We have fuel pressure at the rails. More to follow.
Old 09-22-2018, 07:00 PM
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jetson8859
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Was able to get back to the car today and it is now running. The issue was twofold, but will get to that shortly. We started off by checking voltage at each of the EZK, LH and Fuel Pump relays. Once we confirmed that we checked fuel pump and no voltage when cranking which lead us to swap out computers for a known good set.

Once we did that we got voltage at fuel pump but no start. A little more digging and I found this...the ignition monitoring relay plug had one corner that was broken which didn't allow the small pin to seat with the spade connector.

Once we seated the pin the car started right up! The first time in 17 years! Had good oil pressure and no visible leaks.

The car has an X-pipe and no cats so we didn't install the ignition monitoring sensors in 3 and 7. I will install the bypass relay to keep the monitoring circuit happy.

Appreciate all the help.



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