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Old 04-13-2007, 07:10 AM   #71
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Have you checked your connections at the battery before the dead battery?
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Old 04-13-2007, 01:15 PM   #72
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In reference to what I posted a few posts back:

The PCM will NOT reset itself in regards to security when power is disconnected. I believe there is either a capacitor or a small ni-cad battery that powers that circuit, or it could even be flash memory. Only by leaving the key in for 10 minutes (I forget how many minutes it actually is, and it may vary by model and vehicle, but it IS a long wait) with the ignition "ON" will you reset the security on the PCM. Reason? Any "booster" will try to disconnect the battery first, and hopes that it will reset the security so they can drive off with it. No crook in their right mind is going to sit in the car for 10 mins and wait for the PCM to give the "all clear" command however. It will frustrate them. Much like it does/did the author of this post
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Old 04-13-2007, 11:09 PM   #73
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Quote:
Originally Posted by sandrock
In reference to what I posted a few posts back:

The PCM will NOT reset itself in regards to security when power is disconnected. I believe there is either a capacitor or a small ni-cad battery that powers that circuit, or it could even be flash memory. Only by leaving the key in for 10 minutes (I forget how many minutes it actually is, and it may vary by model and vehicle, but it IS a long wait) with the ignition "ON" will you reset the security on the PCM. Reason? Any "booster" will try to disconnect the battery first, and hopes that it will reset the security so they can drive off with it. No crook in their right mind is going to sit in the car for 10 mins and wait for the PCM to give the "all clear" command however. It will frustrate them. Much like it does/did the author of this post
So his car starting right up doesn't have anything to do with the VATS then, right? So, we're looking in the wrong direction here, and the VATS was not the cause of his issue, since his car started right up after the battery went dead.
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Old 04-14-2007, 11:50 AM   #74
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BUT...he DID leave his key in the ignition in the "on" position for well over 10 mins. Remember, he came back to a dead battery because he left his ignition on. So yes, it IS VATS related. But there isn't anything wrong with the system, except that somehow it detected what it thought was an attempt at stealing the car, hence the "lockout" of the fuel pump.
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Old 04-14-2007, 02:35 PM   #75
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Quote:
The PCM will NOT reset itself in regards to security when power is disconnected. I believe there is either a capacitor or a small ni-cad battery that powers that circuit, or it could even be flash memory
The security IS flash memory there when the PCM looses power it does "reset" so to speak. Thats why people can drive their cars for a short time after loosing charge or resetting the PCM. When the PCM looses power, it has to cycle thru everyting. Ftrims, security, ect.

The ONLY secutiy that doesn't reset is in the BCM (ie-radio), that'* also why the PCM shuts the car down. At initial start-up the PCM does its cycling. The security IS NOT in PCM its in the BCM...

So disable the security in the PCM (as I have explained before), and issue solved! The security reset (key) doesn't always work once you have modified/swapped to a different engine/setup.

Now if I confused anyone:
BCM controls security-DOES NOT reset when power is lost
PCM shuts car down because BCM says so.And the PCM will reset when power is lost-
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Old 04-14-2007, 02:46 PM   #76
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Ah...I forgot about BCM. Somehow I was thinking the PCM was the do-all. Forgot it had help
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Old 04-15-2007, 04:56 PM   #77
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Quote:
Originally Posted by 13secGTP
Quote:
The PCM will NOT reset itself in regards to security when power is disconnected. I believe there is either a capacitor or a small ni-cad battery that powers that circuit, or it could even be flash memory
The security IS flash memory there when the PCM looses power it does "reset" so to speak. Thats why people can drive their cars for a short time after loosing charge or resetting the PCM. When the PCM looses power, it has to cycle thru everyting. Ftrims, security, ect.

The ONLY secutiy that doesn't reset is in the BCM (ie-radio), that'* also why the PCM shuts the car down. At initial start-up the PCM does its cycling. The security IS NOT in PCM its in the BCM...

So disable the security in the PCM (as I have explained before), and issue solved! The security reset (key) doesn't always work once you have modified/swapped to a different engine/setup.

Now if I confused anyone:
BCM controls security-DOES NOT reset when power is lost
PCM shuts car down because BCM says so.And the PCM will reset when power is lost-
I would say that more people would have access to a resistor or another key rather than the ability to reprogram the PCM. I know I have no way of editing the PCM. A resistor is a few cents at an electronics store. It seems like bad advice to first say to edit the PCM rather than going a much less expensive, and much more likely route of a resistor in the line.
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Old 04-15-2007, 11:06 PM   #78
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Quote:
I would say that more people would have access to a resistor or another key rather than the ability to reprogram the PCM. I know I have no way of editing the PCM. A resistor is a few cents at an electronics store. It seems like bad advice to first say to edit the PCM rather than going a much less expensive, and much more likely route of a resistor in the line.
Granted if this was an unmolested car...There is also an easier way, that requires 3-4ft of wire to bypass the BCM security..But that IS bad advice...

However when taking on a swap by yourself you should have access to reprog your own PCM! Therefore PCM work would be free!!! And how many times has somebody asked the thread starter to GET A SCANNER? A few bucks more and he'll have a tuner-your right tho-thats "bad advice"

I'm tired of hearing "bad advice" over here. Most of you have don't have a clue how to do a swap yourselves. Bad advice is something that either doesn't work, causes more problems, or damages a vehicle. Hrm.. don't think what I've said falls into ANY of that..
I'm done-figure it out yourselves.
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Old 04-16-2007, 06:59 PM   #79
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Quote:
Originally Posted by 13secGTP
Quote:
I would say that more people would have access to a resistor or another key rather than the ability to reprogram the PCM. I know I have no way of editing the PCM. A resistor is a few cents at an electronics store. It seems like bad advice to first say to edit the PCM rather than going a much less expensive, and much more likely route of a resistor in the line.
Granted if this was an unmolested car...There is also an easier way, that requires 3-4ft of wire to bypass the BCM security..But that IS bad advice...

However when taking on a swap by yourself you should have access to reprog your own PCM! Therefore PCM work would be free!!! And how many times has somebody asked the thread starter to GET A SCANNER? A few bucks more and he'll have a tuner-your right tho-thats "bad advice"

I'm tired of hearing "bad advice" over here. Most of you have don't have a clue how to do a swap yourselves. Bad advice is something that either doesn't work, causes more problems, or damages a vehicle. Hrm.. don't think what I've said falls into ANY of that..
I'm done-figure it out yourselves.
I didn't mean to raise your feathers there. I know alot more than you seem to think.

But, yeah, if he bought a tuner, that would be ideal. In fact, a very good idea since you're going to need to make alot of small adjustments.
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Old 04-17-2007, 01:06 AM   #80
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Quote:
I didn't mean to raise your feathers there. I know alot more than you seem to think.
No problem, and never said you didn't know . A lot of people just have "ideas" tho, especially when it comes to this stuff, and its hard to tell who has the idea and who is saying how it is via internet.

If Brian T or a few others have had posted in here with MUCH more knowledge than myself (about this particular subject) I would never have posted. Where I come from its second nature to have a tuner+scanner(wideband, ICCU, AFC,a-tap, ect). So it gets even more frustrating for me when I'm trying help a situation and would've been all fixed by know if he only had a tuner

-Word to the wise-and this applies to EVERYONE, if you are swapping an engine(or top swap) into a car that didn't originally come in that car-GET A TUNER. And also at 12second power level. OTS PCMs are descent to ~13.0 normally
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