Code 13 after Headers Install.
 

I have been getting a code 13 lately when in higher rpms. Have had my headers on for almost 5 months now. When my check engine light comes on it almost always goes out a few seconds later but sometimes it takes a bit longer. 10 15 seconds. How can I fix this? New o2 sensor? Or is there more to it.

Re: Code 13 after Headers Install.
 

Re: Code 13 after Headers Install.
 

I guess I could buy a new one if it's faulty. Has been on there for quite some time. I read on a thread something about a heated sensor but don't quite remember.

Re: Code 13 after Headers Install.
 

You can add a 3 wire delco Afs-74. With headers the o2 can cool off and not go into closed loop. This usually happens at idle though.

Re: Code 13 after Headers Install.
 

Yeah the code comes on when in higher rpms. So maybe it's too rich or something?

Re: Code 13 after Headers Install.
 

Are you getting a code 45 ?
A new o2 is cheap and easy to start with.

Re: Code 13 after Headers Install.
 

but if you're going to buy a new 02 sensor, you might want to go ahead and get a heated one.

Re: Code 13 after Headers Install.
 

Why the heated one? Have a part no.?

Re: Code 13 after Headers Install.
 

Amazon, acdelco afs-74 . It will warm up faster for closed loop operation.
you can hook the power wire to fuel pump wire at the relay.

https://www.ebay.com/itm/TPI-TBI-3-W...AAAOSwJcZWcLb5

Re: Code 13 after Headers Install.
 

like tuned said "With headers the o2 can cool off and not go into closed loop. This usually happens at idle though."

a heated 02 sensor gets it and keeps it up to temp and in closed loop where you want it.

Re: Code 13 after Headers Install.