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Apr 25, 2008 | 10:32 AM

#21

bczee

Thread Starter

Racer

Joined: May 2006

Posts: 426

Likes: 16

From: Concord CA

OK.. had sometime to look into my problem with the Vette.. found out that the VAT bypass was not the correct ohms.. my bad.. miss read the resistor. So.. corrected it and all is well..

thanks everyone for there input. As usual, it was a learning adventure and some more knowledge to try and stuff in my to small and over filled brain.

Apr 25, 2008 | 02:12 PM

#22

Redeasysport

Le Mans Master

Joined: Dec 2004

Posts: 5,789

Likes: 8

From: Myrtle Beach SC

St. Jude Donor '05-'06

Glad you got it fingered out. I still can't figure how that let you start it then die though.

Apr 25, 2008 | 04:11 PM

#23

bczee

Thread Starter

Racer

Joined: May 2006

Posts: 426

Likes: 16

From: Concord CA

I am no expert on the C4's VAT system, I do know a little bit on the Gen IV F-Body and the LSx systems.

Those system will allow the car to start up for a few seconds and then die.. this is what syptoms that I had on my C4 Vette.. so.. that is what I expected once the Starter Relay and/or VAT decode module was bypass for a start up, and then the VATS kicked in to kill the engine after two seconds or so, which is what I would expect to happen.

The VATS are designed to do the same thing, But may handle it differently than the F-Body or LSx system.

If someone can explain the sequence of the Mid C4 VAT System, maybe I can learn a few more things (go slow for me..!

LOL) .. or that I am wrong on what I have stated.

Apr 25, 2008 | 04:14 PM

#24

Redeasysport

Le Mans Master

Joined: Dec 2004

Posts: 5,789

Likes: 8

From: Myrtle Beach SC

St. Jude Donor '05-'06

I thought if the VATS was enabled that the starter would not turn over. Could be wrong But I do not think so.

Apr 25, 2008 | 05:22 PM

#25

bczee

Thread Starter

Racer

Joined: May 2006

Posts: 426

Likes: 16

From: Concord CA

That is why the Start Relay bypass must be wired and/or shorting the Ground (Green wire) of the VATS Decode Module (not sure how this all ties together or works yet myself, but learning).

Apr 25, 2008 | 08:35 PM

#26

Redeasysport

Le Mans Master

Joined: Dec 2004

Posts: 5,789

Likes: 8

From: Myrtle Beach SC

St. Jude Donor '05-'06

Thats right you had not only VATS but start relay jumpered.

Apr 30, 2008 | 04:56 PM

#27

G.WooZ

Advanced

Joined: Apr 2008

Posts: 56

Likes: 0

I have a qestion

if you bypass the starter enable relay and bypass the vats decoder module by the green wire to the ground is vats completely disable ??
thanks