alrighty,
got an 89 rs 305 tbi for free... came w/o keys... bought the new cylinder lock, didnt have the 2 wires for it......
Questions:
1. where do the 2 wires from the lock cylinder wire up to? anyone know the wire colors? or where they hook up?

2. anyway to bypass the entire vats system
3. anyway to bypass the entire system w/o a new chip?

4. does the VATS, or the computer have the ohm resistance programmed in it??

5. can you just replace the ecm and lock cylinder from another car, which i have, and have it start?

thanks
derek
dfelton26@hotmail.com

 

VATS is not that difficult to diagnose. Your car should have a separate VATS module. The '90-up cars would have VATS in the ECM. You can buy a VATS cylinder from the dealer for about $65. Or you can bypass the system. The cylinder comes with a cut key, but no pellet. You need to have a key with the correct resistance pellet cut to match the blank provided with the cylinder. The dealership will do that for $39, or you can get a lock shop to do it for $12. (They used to be $7 at the locksmith, but inflation is hitting everywhere, it seems.)

I'm working on a '90 Olds Trofeo right now with a VATS and CRT display problem. Yes, it has a 5" color TV screen in the dash as the Information Center - stock. A local dealer gave up on it. The owner didn't want to spend $65/hour diagnostic time until they figured it out. That's how I know the current VATS part prices.

 

Yes there is a way to completly bypass your VATS system. I had to do so because my tumbler messed up and it would not read the chip on the key. Just ran a switch up to the ignition switch also to the fuse block..turn the key to the on position and push the button.

Correct me if the wiring isnt right. THERE IS a way to bypass it

 

Sorry, didnt read close enough.

Of course you would need the key to do that...

 

Vader, isn't that olds CRT display also the controls for the A/C system?

 

1. Not familar with the cylinder type, bu the wires go to the VATS module.
2. Yes, with a non-VATS ECM (VATS disabled,) or reprogramming your chip. and installing a bypass resistor in the VATS module, or permanently grounding the starter relay coil.
3. No, See item 2 above.
4. On your 89' the VATS module does, but not the ECM.
5. If your 89' has VATS enabled you don't need the donor ECM just the lock cylinder, and VATS module as a matched set.

Let us know if you got it running.

 

hmmmm.... so i suppose im looking for a non vats ecm for an 89 305tbi... not so keen on tearing apart the donor car dash and my 89 dash again... the donor car still runs and drives, just has the front missing (due to right front collision)


looks like im in the market for a new ecm w/o vats... is that correct? or do they make such a thing, an 89 w/o vats ECM??

im really in the dark when it comes to VATS or anti-theft my 84 was/is much simpler.. haha

thanks

 

...And the radio, and some diagnostics, and the oil life monitor, and the navigation compass, yada, yada.

I got it, though. It wasn't communicating with the ECM/Body Control serial link. Now it is. Pretty cool little item on the Olds, provided it works. I'm a little surprised the GTA didn't get this little feature.

 

You can get a PROM burned with the VATS disabled, or you can repair the VATS system. It is a nice theft deterrent. At least it may annoy a potential thief enough to have him move on to another victim.

You're not likely to find an ECM for '89 that didn't have VATS. The easiest way is via the PROM. If you don't have easy access to burning equipment, the next easiest thing is to determine the resistance and bypass the lock cylinder VATS contacts and column wiring. But if you go that far, you might just as well get a VATS key with that resistance pellet cut to your existing lock cylinder.