BUDGETRAT

iTrader: (1)

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

Hi-Po

iTrader: (4)

Start here.
http://forums.holley.com/showthread....ist-Holley-EFI

Beanslsxnova

iTrader: (1)

Have you done the tps autoset. It will not fire or signal the injectors untill you set up the tps

BUDGETRAT

iTrader: (1)

Thanks I will check all these

BUDGETRAT

iTrader: (1)

Yes I did do this Thanks

forcd ind

iTrader: (7)

When you first turn the ign on, do you get all sensors sync.
what tune up did you load
as said, TPS autoset
go back thru all your settings, double ck they match your engine

Hellhaunter

i would check the harness to see if it's wired correctly ,the diagram is in the manual or on Holleys site
i have read some posts that holley have had faulty connectors.

samdogmx

iTrader: (14)

It has to see a valad RPM when cranking.

Check the crank sensor, make sure its the correct one for 58x, check the harness, check you have it set right in ignition parameters.

BUDGETRAT

iTrader: (1)

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.

BUDGETRAT

iTrader: (1)

The two time it did show rpm for a second I had just got done syncing ECM not sure if that was coincidence or not

samdogmx

iTrader: (14)

Id start by double checking the wires where they go into the plug at the crank sensor, make sure nothing is loose, then OHM each wire from the crank plug back to the main connector on the holley.

BUDGETRAT

iTrader: (1)

ok I'll do that tonight. Thanks again!!

toytech93

iTrader: (2)

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.

BUDGETRAT

iTrader: (1)

It does prime I'll double ck red wire though

BUDGETRAT

iTrader: (1)

Got it to run !!!! Was dropping battery voltage gonna get a new bigger battery since it's in trunk. Thanks everyone!! Now just have to get it to idle