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PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Do I need to disable VATS?

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Old Aug 1, 2009 | 01:53 AM
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Default Do I need to disable VATS?
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Last edited by Mike96z; Aug 26, 2009 at 09:31 PM.
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Old Aug 1, 2009 | 02:04 AM
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The only problem is my PCM is a 99 and the vats value for that pcm is unknown unless all 99s are the same.
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Old Aug 1, 2009 | 02:29 AM
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Just wondering how do you know that you are getting fuel? Also do you have any tuning software?
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Old Aug 1, 2009 | 07:57 AM
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Did you wire the vats signal from the BCM to the PCM? The BCM takes care of the key issue, not the PCM. The BCM sends a signal to the PCM to enable the fuel. Even if you don't have a valid Vats signal going to the PCM, it should still fire, but it will shut down right away
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Old Aug 1, 2009 | 10:17 AM
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vats wont allow starter to crank or fuel to engage. it tells the bcm to ground the wire to the starter relay to allow cranking.
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Old Aug 1, 2009 | 02:47 PM
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I know I'm getting fuel. Pulled the rail & plugged it in and turned the engine over. Plenty of fuel sprayed out each injector. No tuning software.
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Old Aug 1, 2009 | 04:04 PM
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Update, I have fuel and spark.
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Old Aug 2, 2009 | 01:16 AM
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maybe a timing issue?
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Old Aug 2, 2009 | 03:12 PM
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Engine has 30 k. Replaced all sensors. Even cars with bad timing attempt to start. Maybe bad gas? Gas was sitting in this roller for awhile.
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Old Aug 2, 2009 | 03:47 PM
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Just drained the gas out, going to try fresh gas. Im getting gas and fuel, damn mystery issue but I think the gas is bad, suppose to be clear, my **** is super yellow, dark **** color.
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Old Aug 3, 2009 | 12:34 AM
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Thanks!
Last edited by Mike96z; Aug 26, 2009 at 09:31 PM.
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