Secondary Air Valve Replacement - How to access?

[Ajolives]

Scrippy I was looking to doing this soon. If I’m understanding correctly, I need to approach from under tha valve covers? Bank 1 is suspect on my car, also the valve cover is starting to peel so I figure two birds one stone type of deal. Just a bit confused on the entry point.

[Helmsman]

Originally Posted by Ajolives

Scrippy I was looking to doing this soon. If I’m understanding correctly, I need to approach from under tha valve covers? Bank 1 is suspect on my car, also the valve cover is starting to peel so I figure two birds one stone type of deal. Just a bit confused on the entry point.

Codes coming up, or preventively?

[Ajolives]

Originally Posted by Helmsman

Codes coming up, or preventively?

No codes but I’ve experienced extended cold starts for the past two years, maybe 2 out of 5 starts. Sometimes it’ll just stay open til I turn off and restart, then cold start loop closes in like 10 seconds. I surmised a clogged/bad valve and saw scrippys post from a while ago and was like that’s gotta be it. Bank 1 has chewed up two pre cat O2 sensors in the past four years so I figure it’d be worth my time to get in there and see if it’s as bad as everyone says. Not sure if O2 is related but couldn’t hurt to check it out.

[Scrippy]

Originally Posted by Ajolives

Scrippy I was looking to doing this soon. If I’m understanding correctly, I need to approach from under tha valve covers? Bank 1 is suspect on my car, also the valve cover is starting to peel so I figure two birds one stone type of deal. Just a bit confused on the entry point.

The valves are on the backs of the heads on each bank. The runner is drilled from the back all the way to the front. So with the valve covers off you still will not see these or have access to them. The runner is in the heads front to back and then there is a smaller hole from that runner down to each exhaust port. If the little ones were clogged, you would remove the headers to clear them with a pick or something rigid. It’s a bitch of a job because the firewall is right there. Plenum, wire harness, secondary pump, pumps intake line and pumps Y-hose should be removed. Wire harness just needs to be moved not removed. A multi length hand gun bore cleaner will work. Brush and first section go in and then you screw on the next section as you go in deeper. Always turn the cleaner in a manor that is tightening (clock wise) them so one doesn’t come off in there. I dropped down a can of Seafoam per bank in 3 intervals to soften up the carbon deposits in there prior to the bore cleaner.

[Scrippy]

Originally Posted by Helmsman

Codes coming up, or preventively?

27B0

[omgzirra_exe]

Originally Posted by Scrippy

27B0

ive been fighting this code for months then said fuck it and removed the SAP, i would rather just deal with the smog than spend the hours to clean it. lmao

[Ajolives]

Scrippy thanks for that. I’m on the same page now, really appreciate the advice, seems doable but prob gonna block off more time now lol.

[Scrippy]

Originally Posted by omgzirra_exe

ive been fighting this code for months then said fuck it and removed the SAP, i would rather just deal with the smog than spend the hours to clean it. lmao

Holler back when those tags are due cause in Cali it’s a readiness status.

[omgzirra_exe]

Originally Posted by Scrippy

Holler back when those tags are due cause in Cali it’s a readiness status.

oh like i said.. i just deal with it

i stopped caring once this annoying pump issue occured.

instead of me paying $60.. i pay with my knee pads.

[Scrippy]

Originally Posted by omgzirra_exe

oh like i said.. i just deal with it

i stopped caring once this annoying pump issue occured.

instead of me paying $60.. i pay with my knee pads.

But how will you pass smog? Is there some way to suffice readiness for SAP?

[omgzirra_exe]

Originally Posted by Scrippy

But how will you pass smog? Is there some way to suffice readiness for SAP?

oh..i'll pass

and no you're not passing with it disabled.

although i am thinking about a way to loop it.. like on my s2k where i was able to just use a bypass to signal the ecu the SAP was working.

[XKxRome0ox]

Originally Posted by schickane

My car is throwing a fault code for a bad Secondary Air Injection (SAI) pump. It is my understanding that these go bad due to faulty Secondary Air Valves, which fail in the open condition and allow exhaust gases to flow backward into the pump. I would like to replace the valves when I replace the pump to prevent premature failure of the new pump.

is this necessary? or can we just swap out the PUMP and be done with it?
how can you test to see if the valves are failing?


P1411 [0x1411]
SAI System Incorrect Downstream Flow Detected
Status: Confirmed

my error code