02 Sims Not Working?
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From: Port St Lucie FL
02 Sims Not Working? 
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.comThanks
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.
PCM Reset??? 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.
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.
