will the check engine light go off?
Thread Starter
Instructor
Joined: Dec 2014
Posts: 193
Likes: 7
From: Plainfield IL
will the check engine light go off?
I just installed 2011ZR1 manifolds and cats and a Z06 H pipe (no cats) and the engine light was on right when I started the car. Will this eventually go away? When I put the CAI on the light went on after driving 45 miles then went away after another 25 miles. I don't know if it's the exhaust or intake.
Anyone have problems with their check engine light after putting on a Z06 or ZR1 exhaust?
Thanks
Anyone have problems with their check engine light after putting on a Z06 or ZR1 exhaust?
Thanks
Race Director
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
I just installed 2011ZR1 manifolds and cats and a Z06 H pipe (no cats) and the engine light was on right when I started the car. Will this eventually go away? When I put the CAI on the light went on after driving 45 miles then went away after another 25 miles. I don't know if it's the exhaust or intake.
Anyone have problems with their check engine light after putting on a Z06 or ZR1 exhaust?
Thanks
Anyone have problems with their check engine light after putting on a Z06 or ZR1 exhaust?
Thanks
If you don't have cats I agree with the previous post, if you have cats than something is wrong with the install.
Thanks!
Drifting
Joined: Sep 2009
Posts: 1,719
Likes: 4
From: cinnaminson n.j.
St. Jude Donor '14
I think he installed the earlier set up with cats in the down pipe with cat less Hpipe. His 2012 GS had 4 cats from the factory.
If the light went on immediately, something is wrong. Probably an 02 connector not securely connected.
If the light went on immediately, something is wrong. Probably an 02 connector not securely connected.
Race Director
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
Thread Starter
Instructor
Joined: Dec 2014
Posts: 193
Likes: 7
From: Plainfield IL
I will have re check the connections. The rears were never disconnected as it wasn't needed plus the location of the connectors make it very difficult to disconnect. I put extensions on the front connectors. I will re check those. It did seem odd that the light was on immediately.
Thanks
Thread Starter
Instructor
Joined: Dec 2014
Posts: 193
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From: Plainfield IL
O2 sensors are connected. Just double checked. It might be the light I got from the CAI, would be a coincidence but can happen. I will have my friend scan it when he gets a chance. He's a vette mechanic. He had to re program my computer for the higher tire pressure anyway from running non runfalt Michelin PSS.
Wasn't sure if the exhaust swap was know for throwing a light or not. The only other possibility I can think of is if a wire was damaged on a rear sensor from removing or installing, the twisting.
The car runs really good. Smooth. Great power and the mileage was still really good.
Wasn't sure if the exhaust swap was know for throwing a light or not. The only other possibility I can think of is if a wire was damaged on a rear sensor from removing or installing, the twisting.
The car runs really good. Smooth. Great power and the mileage was still really good.
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Thread Starter
Instructor
Joined: Dec 2014
Posts: 193
Likes: 7
From: Plainfield IL
Thanks
Thread Starter
Instructor
Joined: Dec 2014
Posts: 193
Likes: 7
From: Plainfield IL
When you say turn them off in the programming what exactly do you mean,? because you need them functioning for the engine management system to do it's thing right?
6th Gear
Joined: Sep 2014
Posts: 6
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What I understand is they disable the codes that get set due to the O2 sensors reading not being within the specified range. After I had mine put on, then Check engine light came on after driving 35-45 miles. I checked with the shop and they confirmed that it was due to the location of the O2 sensors being in a different location on the Z06 exhaust and that they would disable the codes when they did my tune. Since I was scheduled for an CAI & Tune anyway, I was not worried about it.
Race Director
Joined: Aug 2005
Posts: 13,592
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From: Hudson WI
NCM Sinkhole Donor
What I understand is they disable the codes that get set due to the O2 sensors reading not being within the specified range. After I had mine put on, then Check engine light came on after driving 35-45 miles. I checked with the shop and they confirmed that it was due to the location of the O2 sensors being in a different location on the Z06 exhaust and that they would disable the codes when they did my tune. Since I was scheduled for an CAI & Tune anyway, I was not worried about it.
Thread Starter
Instructor
Joined: Dec 2014
Posts: 193
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From: Plainfield IL
Just took the car out to get a custom reducer for the exhaust and noticed the light turned off. Cool! Hopefully it stays off.
I'll still have it hooked up at some point to make sure everything is good.
I'll still have it hooked up at some point to make sure everything is good.
Melting Slicks
Joined: Mar 2009
Posts: 2,321
Likes: 69
Put it on scanner read the codes and then post it, usually when doing a swap like that you delete the post cats o2s car runs better plus no worries on gas mileage on having more o2s to replace....just my 2 cents.. Post the code your getting ill look in to it....
Drifting
Joined: Sep 2009
Posts: 1,719
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From: cinnaminson n.j.
St. Jude Donor '14
The o2 heaters will set codes quickly. The sensor performance codes will take some driving. I agree with post 13, have the codes read so we have a starting point. I recently install headers with cats and no rear o2's connected and my light was on immediately. It set both rear 02 heater codes. After driving a while it set the o2 performance codes.
Post the codes when you have them.
Post the codes when you have them.
Thread Starter
Instructor
Joined: Dec 2014
Posts: 193
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From: Plainfield IL
I'm out of town right now. One of my friends will bring his scanner over when he gets a chance. He will do it for free. He's been super busy moving up to shop foreman and beyond. He specialized in Corvettes. I'm being patient with him. The light is off now but will still have him check it as I am going to have him reset the tire pressure warning setting from ditching the factory goodyear runflats to michelin pss non runflats. They have a higher max psi of 50 and I am not going to run them at the dactory 32psi. That's too low.
Drifting
Joined: Apr 2000
Posts: 1,882
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From: Toronto Ontario
I'm out of town right now. One of my friends will bring his scanner over when he gets a chance. He will do it for free. He's been super busy moving up to shop foreman and beyond. He specialized in Corvettes. I'm being patient with him. The light is off now but will still have him check it as I am going to have him reset the tire pressure warning setting from ditching the factory goodyear runflats to michelin pss non runflats. They have a higher max psi of 50 and I am not going to run them at the dactory 32psi. That's too low.
Thread Starter
Instructor
Joined: Dec 2014
Posts: 193
Likes: 7
From: Plainfield IL
Just had my friend hook up my car to a GM scanner and no problems with the exhaust install or o2 sensors. The light was from a lean code from the CAI.
Thanks for all your feedback.
Thanks for all your feedback.
Safety Car
Joined: Nov 2006
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