VATS and Fuel pump priming

Holden/Delco Tuning. ALDL, OBD 1.5. Circa 1989 to 2004.
User avatar
hoopstar
Posts: 46
Joined: Thu Mar 21, 2013 9:29 am
cars: 350 Chev HR Holden (carby)
VK Calais with (soon) VR EFI 304
Location: Adelaide

VATS and Fuel pump priming

Post by hoopstar »

Quick question: If VATS is still enabled on a vehicle without a BCM, will the fuel pump go through it's 2 second priming cycle or is the PCM essentially just 'dead' until it receives the expected BCM command?
User avatar
vlad01
Posts: 8550
Joined: Mon Oct 08, 2012 8:41 am
cars: VP I S
VP I executive
VP II executive
VP II executive #2
Location: Kyneton, Vic

Re: VATS and Fuel pump priming

Post by vlad01 »

im sure it still primes just doesn't fire the injectors.
User avatar
Gareth
Posts: 2678
Joined: Fri Mar 14, 2014 10:37 am
Location: Bacchus Marsh, Vic

Re: VATS and Fuel pump priming

Post by Gareth »

VATS has nothing to do with fuel pump prime
According to chemistry, alcohol is a solution...
User avatar
Holden202T
Posts: 10435
Joined: Sat Feb 28, 2009 11:05 am
Location: Tenambit, NSW

Re: VATS and Fuel pump priming

Post by Holden202T »

the only security I've seen do that is the VP commodore, it wont enable the ecm until the security fob is pressed, but that's a car security system and not part of the ecm/vats
User avatar
vlad01
Posts: 8550
Joined: Mon Oct 08, 2012 8:41 am
cars: VP I S
VP I executive
VP II executive
VP II executive #2
Location: Kyneton, Vic

Re: VATS and Fuel pump priming

Post by vlad01 »

All it is on the VP is the switched ignition is cut to the ECU by the ATM, so is not a true security feature, rather an elaborate kill switch.
User avatar
Holden202T
Posts: 10435
Joined: Sat Feb 28, 2009 11:05 am
Location: Tenambit, NSW

Re: VATS and Fuel pump priming

Post by Holden202T »

regardless of how it works, it stops the fuel pump from priming is my message!
User avatar
The1
Posts: 4852
Joined: Mon Jan 04, 2010 12:23 am

Re: VATS and Fuel pump priming

Post by The1 »

on latter models VT and up a SRS Module that has been deployed will cut the fuel pump, an oil pressure switch on older models can also cause issues.