I got my car back from the mechanic. the car was first tuned, but the engine had to be rebuilt afterwords. i have had headers on for almost a year, but this is the first time the p1153 code has come up. the car does have 120k miles on it and i dont think the o2 sensors have ever been changed. could those be the problem?

 

https://ls1tech.com/forums/showthrea...ighlight=p0153
Read all 8 pages.

 

well i read the whole damn thing, and i didnt understand half the **** in it. haha. im not a tuner, i have no clue how to use hptuners or efi, and i dont have any handhelds.
the only thing i gained from it was that using stock ac delco sensors are better off and if they still throw a code, just get them deleted. is that right??

 

Thats what I did recently, it seems to have solved the problem.
This prevents it from staying in open loop.

I don't think it's the best way IMO, but I'm no tuner either and I don't feel like experimenting with different things. I think the answer is to get the VCM to properly fuel the car with the colder O2 temps at idle.

Don't feel bad, I read all eight pages AND several hours of posts found during a search.

 

I don't think there is one simple fix.

 

oh thats good. i felt like a dumbass reading all that stuff. good to know somebody else didnt understand it either. haha. but thanks for the help.