Dominator no start.

[kyle 0523]

What would the voltage be coming from crank sensor to ECU?

[andrewb70]

It'd help if you listed more information. What kind of engine is it? Andrew

[kyle 0523]

LSx Next Dart block, 416, LS7 heads, Holley Dominator EFI 58x reluctor.

[andrewb70]

The 58x crank sensors are 5V. You should have close to 5V across the orange & black (ground) wires of the sensor. With the Dominator you should do a System Log to see what's happening with the cam & crank signals. Andrew

[kyle 0523]

Yes sir, I have 5 volt, ground & 12 volts on signal wire from ECU. I've turned cam off and getting RPM & pulse at injectors. Why would turning off cam cause this to happen, and when on, it knocks out crank signal?

[andrewb70]

Have you done a System Log?

[Danny Cabral]

Originally Posted by Danny Cabral If your crank or cam sync unit isn't transmitting a signal, troubleshoot the sensors, wiring, reference voltage & ground, reluctor, alignment, air gap (LINK), radial run-out problems (LINK), etc. If a regular datalog indicates an "RPM Error" when scrolling through the problem area, then it's time for a System Log to confirm which sensor flatlines. FYI: Crank & Cam A/D means Analog To Digital. It's not the +5V reference supply voltage. Troubleshooting 3-wire Hall-Effect sensors: https://www.yumpu.com/en/document/re...le-electronics (Understanding/Troubleshooting Hall-Effect Sensors - "Troubleshooting", Page 2) http://assets.fluke.com/appnotes/aut...e/beatbook.pdf (Fluke Multimeter Testing - "Hall-Effect Sensors", Page 17) Record a System Log to verify crank & cam sensor signals. Check mark the "RPM", "Crank" & "Cam" channels. Look for a uniform, uninterrupted crank or cam sensor signal pattern. The crank or cam sensor signal should never flatline (no pulse) or indicate an RPM "Error" anywhere. Also, fully charge the battery and ensure the engine is cranking fast enough, at least 100+ RPM. Another common issue, is trying to analyze a compressed view of a long System Log. Zoom In for detail - click & hold at one point of the datalog, and drag & release to another point nearby. It's best to record short System Logs/Datalogs that capture the problem. http://forums.holley.com/showthread....s-amp-Datalogs (Datalog & System Log Information)

[kyle 0523]

Yes sir, I've been trying to get one loaded up, but it says Holley invalid file.

[Danny Cabral]

This is a copy & paste from one of my other posts:

Originally Posted by Danny Cabral For further assistance, post your Global File and a short datalog of this occurrence for us to analyze. Also, review the datalog and inform us of exactly where in the datalog (time/seconds) the problem occurs. Datalog & Global Files must be linked to a document hosting website. I use Dropbox.com. Files can also be "zipped" (compressed zipped folder) & attached directly to a forum post ("Go Advanced" & "Attachments"). Your Global File is in the "Documents", "Holley", "HEFI V5", "Global Files" folder (.hefi file). Your Datalogs are in the "Documents", "Holley", "HEFI V5", "Datalogs" folder (.V5.dl file). Someone will analyze/troubleshoot the problem & offer advice. Also, ensure all this is right: http://forums.holley.com/showthread....ents-Read-This (Initial Checks & Adjustments - Read Steps #1-#6!)

[kyle 0523]

My tune:
https://www.dropbox.com/t/lZWlfoxMmALlvPOF
Tune Holley sent to me:
https://www.dropbox.com/t/yOsye7zDs3rT3gAI