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Old 05-28-2020, 04:07 PM   #11
Ed Wright
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Default Re: No start issue Holley HP EFI

I have helped people having that issue.
You might try squirting some gasoline into
The throttle body (Just open the throttle to squirt
some in, before cranking it)If that helps, you need
to go to the Cranking Injector Pulse Width table, and scale
It up something like ten percent. Save that file with another name,
In case it was no better.
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Old 05-28-2020, 04:11 PM   #12
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Default Re: No start issue Holley HP EFI

Might also, first, look at the indicated Coolant Temp on your laptop, Holley cal opened up, key on, engine off. If squirting fuel injector helps, verify the Holley ECU is seeing the engine correct coolant temp. If reading very hot, it will normally get less cranking fuel.
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Old 05-28-2020, 04:23 PM   #13
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Default Re: No start issue Holley HP EFI

It is reading right about ambient for coolant temp which would be correct since it isn't actually firing. So that part is ok. I'll give the fuel deal a shot though.
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Old 05-29-2020, 06:29 AM   #14
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Default Re: No start issue Holley HP EFI

That will only help if you have spark.......
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Old 05-29-2020, 10:24 AM   #15
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Default Re: No start issue Holley HP EFI

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That will only help if you have spark.......
You would expect that to be checked first, right?
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Old 05-29-2020, 12:00 PM   #16
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Default Re: No start issue Holley HP EFI

It is possible the firm wear update has a glitch.

Anytime you make a change in the Holley you should do a TPS autoset for the Holley to activate the injectors and coils to fire.

8. Plug in the USB cable to the ECU and Laptop. At this time, communication status should change from “Offline” to “USB Link”.
Next, turn the vehicle’s ignition power to “run” (not start). Click the “USB Link” once. A screen should appear that will compare the
files in the ECU with the file in your laptop. They will not be the same. You want to select the “Send To ECU” button at the bottom
of this screen. This will send the new file you created to the ECU.
9. Once this is done, leave the ignition powered. At the top of the screen, select the arrow on the “Sync” button. Select the “Perform
TPS Autoset” function. It will guide you through steps to set the TPS. Slowly depress the throttle from closed to fully open twice.

SYNC button
NOTE: IF YOU DO NOT PERFORM A TPS AUTOSET, THE ECU WILL NOT FIRE THE INJECTORS OR THE IGNITION AND THE
CAR WILL NOT START! IF THE TPS IS NOT SET, YOU WILL SEE A WARNING AT THE TOP OF THE SYNC SCREEN
AND THE TPS WILL SAY “NEEDCAL” ON THE MONITOR SCREEN.
NOTE: ANY time you adjust the throttle linkage (in the future), you must perform a “TPS Autoset” after adjusting the linkage.
10. Shut the ignition off. Turn the ignition back on (do not start). You should hear the fuel pump start and stop after about 5 seconds.
If you do not, diagnose problem.

Last edited by SS734; 05-29-2020 at 12:04 PM.
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Old 05-29-2020, 01:37 PM   #17
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Default Re: No start issue Holley HP EFI

Quote:
Originally Posted by SS734 View Post
It is possible the firm wear update has a glitch.

Anytime you make a change in the Holley you should do a TPS autoset for the Holley to activate the injectors and coils to fire.

8. Plug in the USB cable to the ECU and Laptop. At this time, communication status should change from “Offline” to “USB Link”.
Next, turn the vehicle’s ignition power to “run” (not start). Click the “USB Link” once. A screen should appear that will compare the
files in the ECU with the file in your laptop. They will not be the same. You want to select the “Send To ECU” button at the bottom
of this screen. This will send the new file you created to the ECU.
9. Once this is done, leave the ignition powered. At the top of the screen, select the arrow on the “Sync” button. Select the “Perform
TPS Autoset” function. It will guide you through steps to set the TPS. Slowly depress the throttle from closed to fully open twice.

SYNC button
NOTE: IF YOU DO NOT PERFORM A TPS AUTOSET, THE ECU WILL NOT FIRE THE INJECTORS OR THE IGNITION AND THE
CAR WILL NOT START! IF THE TPS IS NOT SET, YOU WILL SEE A WARNING AT THE TOP OF THE SYNC SCREEN
AND THE TPS WILL SAY “NEEDCAL” ON THE MONITOR SCREEN.
NOTE: ANY time you adjust the throttle linkage (in the future), you must perform a “TPS Autoset” after adjusting the linkage.
10. Shut the ignition off. Turn the ignition back on (do not start). You should hear the fuel pump start and stop after about 5 seconds.
If you do not, diagnose problem.
Dang. That is good info if it is what is causing his issue and it makes appreciate my FAST XFI even more.
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Old 05-29-2020, 02:08 PM   #18
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Default Re: No start issue Holley HP EFI

Yep have done the tps auto reset on numerous occasions on this deal. Spoke some with Robin Lawrence and he is leaning towards an issue in the firmware install and wants me to try to redo the firmware update several times as he's seen several issues like this. If it doesn't take then it will get shipped off to him for a go. Makes a guy appreciate a good carb sometimes. Lol
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Old 05-29-2020, 03:49 PM   #19
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Default Re: No start issue Holley HP EFI

Quote:
Originally Posted by KRatcliff View Post
Dang. That is good info if it is what is causing his issue and it makes appreciate my FAST XFI even more.
Best fix I found. Ended up giving my Holley system away.
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Old 05-29-2020, 03:52 PM   #20
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Default Re: No start issue Holley HP EFI

Quote:
Originally Posted by JRyan View Post
Yep have done the tps auto reset on numerous occasions on this deal. Spoke some with Robin Lawrence and he is leaning towards an issue in the firmware install and wants me to try to redo the firmware update several times as he's seen several issues like this. If it doesn't take then it will get shipped off to him for a go. Makes a guy appreciate a good carb sometimes. Lol
What did you go to ? V4 up to V5?
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