P0135 & P0155 What would you do?
11-12-2006, 11:18 AM
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P0135 & P0155 What would you do? Ok, I have a 233/239 cam, LTs, and ory, My tune was done by TSP thru their mail order setup. After I installed the exhaust I had a 135 pop up, so I took it to AZ to scan it, took it home and checked my wiring everything was good. Now today I throw a 155, what's the deal here? I've read the stickies and links, and the only thing I can think of is b/c it's below the 50 deg. mark and that the IAC and engine coolant are within 8 deg of each other. I know that my car is running on the rich side but it's still not rich enough to make your eyes water. Do you think the o2s are on there way out? Any helpful suggestions on what I should do would be appreciated. Thanks
11-12-2006, 09:26 PM
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Any other opinions? B/c the first time it happened was 3 months ago on the driver side and it hasn't done it since. Today the pass. side thru the code.
11-13-2006, 07:52 AM
#4
You can do what I did before you go and buy new sensors. I borrowed two from a friend who's sensors I knew were working fine to test to see if I did need o2 sensors. We also had LS1 edit then and tuned it out. As it turned out both my sensors were bad...I still havent replaced them yet 
....over a year later
....over a year later
11-13-2006, 08:44 AM
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Switching codes are normal consequences of header
exhausts. It's just whining. You can get those codes
killed without it hurting anything. You could try the
Bosch 13111s and see if it helps O2 waveforms any.
NGK 'vette rears didn't eliminate my switching codes,
but work OK (switch all right, as far as the signal goes).
exhausts. It's just whining. You can get those codes
killed without it hurting anything. You could try the
Bosch 13111s and see if it helps O2 waveforms any.
NGK 'vette rears didn't eliminate my switching codes,
but work OK (switch all right, as far as the signal goes).
11-13-2006, 05:18 PM
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So basically the o2s aren't bad they are just being a bi$% every now and then? So when I get a better tune done I can have these codes eliminated and in the meantime try the bosch o2s?
Thanks for your responces
Thanks for your responces
