I just installed holley hp efi and i am having trouble.no spark or fuel to cylinder s.? 12 volt when cranking is good,tpms auto rest good everything passed on file.could this be the crank sensor? Stumped

 

Have you performed a TPS Autoset? This must be performed. TPS will display "needs cal" until you complete this step.

 

What does the rpm show while cranking?

 

Yes tps auto cal done

 

I will check cranking rpm today

 

157 rpm. could a bad crank sensor cause this....

 

Generally not if it's reading RPM from that sensor. Have you verified 12V on the injector and coil harness? Loose grounds are connected etc? Other areas are possible cam sensor or something not loaded in the tune properly. You can perform an *.SL Internal Log to check the cam/crank signals are being seen and sync'd properly.

 

yes 12v when cranking. got power to injector harness. i cant see sl log but i did do a data log of it.

 

You need to "enable" the SL Log in the Datalog>Setup ECU Logging> Logging Type>System Log. The log file will be internal so you will need to download it after your cranking test. *.DL is a normal log (ECU Sensors) and the *.SL is a System Log showing inputs from cam and crank channels. Check for missing and/or mistimed cam pulses.

 

You could try batch fire to eliminate the cam sensor. If it runs fine in batch fire, you know the problem. If it doesn't run, then the cam sensor is likely not the problem.

Getting an rpm value to show up while cranking, pretty much takes the crank sensor out of the equation.

 

no spark or no fuel to the cylinders means that you dont have voltage to the fuel ignition harness.

it ties into a relay along with the fuel pump
if that relay does not not have 12v power, you wont have spark or fuel power

I believe there is a Loose Green wire on the relay that is used to go out to a Low amperage fuel pump(no more than 10 amps)

Pin J1-A2,(should be a red wire), which is the fuel pump relay output, has to be sending power for the Coils/injectors to have power

 

"157 rpm."?? Sounds really low, to me.

 

sounds pretty normal for cranking
150~200 RPM is very normal

 

I have power to ignition harness and injector harness when i turn key on first five seconds. I also get the fuel pump primed when key is cycle.I have 12v at red and white wire when cranking.I have a few things to try on sunday. i only get to work on the car 1 day a week because of my work and the cars location. I will report back on sunday.Any other ideas?

 

still needing help. tried a few things today no luck.Im getting a back fire when cranking? Any ideas? Thanks Do u have to do a cam crank sync on a stock ignitinon system dis coil on plug with crank sensor and cam sensor?

 

does the RPM signal show an rpm value? or does it say stall/syncing/error

is the firing order set correctly in the file?

what is cranking timing, and have you verified with a timing light that it matches.


are you using one of the files that has LS1 stuff already setup in it... or did you make a completely new file from scratch?

what is your cranking fuel tables set as? and have you enabled the fuel prime % and set it to a value above 100%?

 

I agree, I would look at the tune and see if it will fire on a LS based tune from global files.

 

Turn the cam sensor off. I had one throw me for a loop a few weeks ago. It ran just really bad. Turned the cam off was like stock.

Tim

 

I know this is old as **** but what ever ended up hanopening here? We are having similar issues and can't figure it out

 

The ecu was bad. Sent it back to them and they checked it and sent new one fired as soon as i turned key.