musicmaker1586

iTrader: (4)

OK what is the deal? I recently hollowed out my cats on my 2000 T/A. I put the o2 sims in and the car ran fine until the computer detected that the sims were there. Now the car run like SH*T. When I start the car it runs fine for about 2 min. Then the car will studden and lose power like a miss. Now i changed the spark plugs and the car a lot better but then my battery died and the computer reset. Now i am back to square one. I gotten to the point that I am ready to get new cats! If you have anything to suggest please email me asap Musicamker1586@aol.com


Thanks

felton316

Did you put the O2 sims on the front O2's or the rear O2's? Are they laying on anything really hot, that might have burned them?

BriancWS6

iTrader: (18)

The sims should be on the rear O2s. I have been using them for over a year on my car and Z-71 with no problems. In fact even if you didn't have them on at all the car shouldn't act like your describing. A buddy of mine ran no converters and no sims for about 4 years on his 99 silverado. The only thing it did was have the SES light on all the time, but it ran fine.

musicmaker1586

iTrader: (4)

I put the sims where they are suppost to go in the rear o2. The check engine light is on and the car still runs like that

JEB99TA

iTrader: (32)

On a 2000 year model F-body, I would think the memory hold-up battery should keep the PCM settings from being 'reset'. Did you really lose your tune due to a dead battery. I'm just wondering because, I have disconnected my battery leads on many ocassions and never have lost my tune.

As for O2 sims, my tuner turned the back two off. Maybe you should try that and it might help your car run right ... just a guess on my part.

musicmaker1586

iTrader: (4)

I havent tuned my car. The computer resets when i disco the battery. What tuner did you use?

WS6 GreeN

Your car won't run like that just from the rear O2 sims not working. There's somethin else going on. Maybe bad front O2's since it runs fine in open loop.