Dustin Hinton

I lost my keys to my car, so I bought new keys with the ignition tum, then I bought the VATS bypass module from eBay, I put a multi meter to the Vats connector going to the car, it's reading 4.67, which is 4600 resistor, so that is what module I bought on eBay, number # 11, but when I turn on the car, dash lights up, security light stays on that tells me the bypass is not working, PLEASE HELP me get her started

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Drew

iTrader: (58)

You need to read the value of the key, not the value of the car.

tealman92

You will need a locksmith or someone to test every resistor value on your car to determine what chip it needs. Lost my keys before and had to have someone come out to make a key and test for the correct chip.

Dustin Hinton

this is what I got https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F283284462521

427seven

If you don't care about VATS, get a key cut off your serial# at the dealer (must be a VATS blank), use your original tumbler, and bypass the VATS relay by connecting the power in and power out wires. The relay is behind the kick panel by the drivers foot.

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Aviator857

If you want to keep it all stock one of the easiest ways to do this is get a bag of resistors. There are 15 possible values the key may have. Look here https://www.thirdgen.org/vats_passkey_system/

Here is the catch each test will disable the module for for a few minutes (I usually say 15 min to be safe). So you will need to test a different resistor value every 15 min or so. You can also do this with a potentiometer just use a multi meter to dial in the resistance for each test.

Testing the resistance of the module doesn't tell you anything.

Once you have identified the right resistor value you will need to go to the dealer (or ebay) and buy a key blank with the right pellet and have it cut to match the key that came with your new cylinder. Or use the resistor you found to by pass it.

Or if your really don't care about VATS working buy this https://www.hawksmotorsports.com/vat...maro-firebird/ and follow the install instructions, this will remove the need for a VATS key or a resistor bypass.

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Dustin Hinton

Yes i seen that post 14 the starter relay but i can not find that connector, i have a 1992 firebird 3.1 V6

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Dustin Hinton

yes, i went to chevy with my vin number and they made me a key, but they are saying that i have to get the car Programmed, i dont know what they mean by getting the car programmed, has anyone got this done before"?

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Dustin Hinton

I can not find the starter relay. The tar is not there anymore, could this be it?

Aviator857

Does it have a large purple wire, if so probably the relay.

Dustin Hinton

Dustin Hinton

I looked at the fuse box and that VATS fuse is not there

Aviator857

Sorry had 3ed and 4th gen relay confused in my head. Should have a thick yellow and thick green/white wire.

There is a mat/ sound deading that covers it up under the plastic kick panel that wraps into the door jam.

Dustin Hinton

It did have a 10 amp fuse, is this the ecm, cause I have the vats bypass I think I need to wire it to the ecm

Aviator857

That is the ecm, but you will still need to bypass the starter relay in addition to the module. The model just tricks the ecm into thinking vats sees your key otherwise injectors and fuel pump are disabled.

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Dustin Hinton

I still can't find the relay

Dustin Hinton

.

Dustin Hinton

This is the next relay I see with think yellow wires

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Dustin Hinton

Here's where the tar use to be but there is no starter relay there

Drew

iTrader: (58)

Yep, that's cause it's a 92. The style of relay changed near the end of production.

Dustin Hinton

So is the relay I shown the right one?

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Dustin Hinton

I jumped the starter relay with a small Guage wire, with the gm key when I turn the key to the on, the fuel pump runs and the security light then second later the security light goes off I'm able to turn the car over

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Dustin Hinton

should I install it? I mean the car runs now

Dustin Hinton

The reason I say that is cause the vats see the key

Aviator857

It could simply be the relay is bad. Does the small black wire go to ground with key in the run position? If vats isn't grounding the relay then the model is failing and I would replace or fully bypass so it doesn't fail at worst possible time. If vats is grounding that wire bench test the relay, and replace it if it's bad. AutoZone can usually show you how to bench test the relay.

Though if unless you just lucked out with the right key resistance I'm surprised the security light is turning off, unless 92 vats is simply the starter disable and not injectors and pump also.

427seven

What do you have the ebay module for? If you want it to by pass the vats module, you've already done that. VATS is an old system and it is defeated in less than 30seconds by someone who REALLY wants to steal your car. If you want to keep it bc you are a purist and you want the car all original, than you're gonna have to pay a dealer to fix it. If yo just want to drive the car, properly connect the two power wires that are bypassing the relay and get yourself a proper modern alarm.

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Aviator857

Most thirdgens with VATS do more than simply disabling the starter. The passkey module sends a 30hz signal to the ECU. Without that signal the ECU kills the injectors and fuel pump. He has bypassed the starter disable relay, but still runs the risk of the ECU killing the fuel delivery if the passkey module is malfunctioning or not reading the key correctly or if using the wrong key value.

I would either fully fix it or fully delete it so you don't have issues in the future. The best solution is to have the eprom in the ECU reprogrammed to disable VATS in the ECU.... Which sounds like maybe a previous owner may have done.

Street Lethal

iTrader: (16)

Agreed. I normally disable VATS in the ECM, then jump the two leads after exiting the column underneath with the correct resistor for the starter enable relay. Kinda confused by the original description though, as the OP lost his key (assuming the car started when he had the key), so the replacement key should have worked after they scanned his vin, or is the dealer blind to the resistor values in the pellet? Why did he even buy a bypass module if the original key started the engine?

- Rob

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Dustin Hinton

The key is reading .53, I will go back up in the posts here and do the vats bypass with the bypass module to the ecm I got on ebay

Dustin Hinton

https://youtu.be/jixZQ2WuyA8

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Street Lethal

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In reference to the video, did the engine start and run okay with the old key?

Because it doesn't seem like a vats issue...

- Rob

Dustin Hinton

Watch the video I posted, according to everyone, bypassing the starter relay shouldn't make the car start but only turn over the starter and the fuel pump shouldn't come on. I did however took off the wire and put on a new relay i just bought, but car only starts with the wire, hmmmmm. But in the video the fuel pump is priming, i did a fuel pump test, I'm getting 39 psi, should be 46, before I lost the key I started the car every three days for 10 mins, cause I don't drive the car, I do it to let the fuel run threw, one day I went out to start it and it does what its doing in the video, thanks Rob, I was posting this when you was writing that!!!!