Holley HP EFI no start
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Holley HP EFI no start
Need help figuring out why I have no spark on 09 6.0. I'm new to the Holley EFI. I've checked all grounds and swapped crank sensors but it shows no rpm when cranking. It has shown it a split second a couple times but generally when cranking it shows syncing. I have latest firmware in ECM and have tried different tunes just to see if it changed anything. Also I have the LS2 harness and setup for 58x crank. Thanks for any help
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Its the gray (58x) crank sensor I swapped it with another known good one and tune is set on 58x Thanks I'll ck connector tonight. I don't think your to far from me I'm about 50mi west of STL.
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Does the system prime the fuel pump when you first turn the key on ?
Check to make sure the red wire for the engine harness has power while key-on/engine cranking. Most lose power while cranking.
Check to make sure the red wire for the engine harness has power while key-on/engine cranking. Most lose power while cranking.