Check Engine Light after RB Road Race Exhaust Install
#1
90RXHeaven
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Check Engine Light after RB Road Race Exhaust Install
Ok, so I just finished mounting my RB true duals and started it up to check for leaks and sound (sounds awesome btw). I haven't started the car in months and now I get a check engine light. What could be causing this?
Projects completed or underway so far:
Road Race Exhaust - s5 - split air pipe removal (just plugged with a bolt) - Complete
RB Sways - complete
New Shox/struts - need to finish mounting springs and then install
Replaced U-Joints - Complete
New Battery - Complete
o2 sensor - Still have the old on on the headers, I assume it works but i bought a new one to be safe (Bosch universal)
Is it possible that the old o2 sensor gets too hot in the headers, or that my fingers may have touched the element when installing? I have a new one to replace tomorrow. I will update then but I'll take any other ideas too.
Projects completed or underway so far:
Road Race Exhaust - s5 - split air pipe removal (just plugged with a bolt) - Complete
RB Sways - complete
New Shox/struts - need to finish mounting springs and then install
Replaced U-Joints - Complete
New Battery - Complete
o2 sensor - Still have the old on on the headers, I assume it works but i bought a new one to be safe (Bosch universal)
Is it possible that the old o2 sensor gets too hot in the headers, or that my fingers may have touched the element when installing? I have a new one to replace tomorrow. I will update then but I'll take any other ideas too.
#3
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I would guess that your aux ports no longer function & that the stock air pump system is not functioning as well... they are part of the same thing. I'm not sure what to do about S5... I ended up removing the stock air system & solenoids & re-making my own air system. I'm happy with it but it's a long way to go to get where I needed to be. keep in mind I had an S4 with an S5 intake on it & needed to activate my 5th & 6th ports as well as the VDI. Possibly you need to block off the split air pipe so that your system remains pressurized enough to activate your aux. ports.
Ramses666
Ramses666
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#10
HAILERS
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
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YOu probably removed the ACV or didn't reconnect the two solenoids on it. That will result in a code. Lack of 02 sensor gives a code.
A code checker is in existance. See Mazdatrix. But that seems wasteful.
A code checker is in existance. See Mazdatrix. But that seems wasteful.
#12
90RXHeaven
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Looks like a new o2 sensor did it. No more check engine light. FYI, a Bosch Universal fits perfectly for $17.99 from AutoZone. The oem is $150 and I said hell no to that. The guy @ autozone said I should be ready for a real pain in the *** with a Universal. This leads me to believe that others may think this too about the Bosch. I put on the new universal on my RB Headers in less than 5 minutes. Works great.
#13
90RXHeaven
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Scratch that, now it's back, but only when I'm off the gas now, on idle/decel. I'll do a search for this but if you know anything, feel free to jump in.
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