Yes, the SAIP relay can be jumped, directly from the battery.
Grrr - P1423 Apparently not Combi Related
I have an on going P1423 - Secondary Air Injection System, Low Flow Bank 1. The SAIP pump is running and only one bank is affected so I assumed the combi was plugged. I took it off and didn't find a lot of blockage as I could blow air through the valve with my lungs fairly easily. I went ahead and cleaned it, reassembled and reset the codes. 2 cold starts later the code is back.
This leads me to think that either the SAIP pump isn't putting out enough air or that the sensor that detects the flow is not reading properly.
Questions:
1. Is there a way to kick the SAIP on w/o starting the engine so I can verify it is flowing air well? Maybe bypass the relay connections with a jumper?
2. Does the O2 sensor determine the flow rate for the SAIP system?
This leads me to think that either the SAIP pump isn't putting out enough air or that the sensor that detects the flow is not reading properly.
Questions:
1. Is there a way to kick the SAIP on w/o starting the engine so I can verify it is flowing air well? Maybe bypass the relay connections with a jumper?
2. Does the O2 sensor determine the flow rate for the SAIP system?
1 - 9 of 9 Posts
And yes, the O2 sensor is the tattler for the SAI system.
But your combi valve should be closed unless vacuum is applied to the small port.
But your combi valve should be closed unless vacuum is applied to the small port.
They should be shut but they siezed open a long time ago. I put another valve upstream to prevent moisture from getting to the pump and I need to make sure it is still flowing enough air past that point.And yes, the O2 sensor is the tattler for the SAI system.
But your combi valve should be closed unless vacuum is applied to the small port.
Just my 2 cents, but it seems like you might spend a lot of time tracking down a "problem" that really doesn't affect proper operation of the vehicle. If you just hate having the CEL on, or want to figure it out for the challenge of it, then nobody will fault you for that. But in reality a slightly low SAI flow in one bank will not cause enough emissions increase over the life of the car to offset the energy and resources you might expend fixing it.
Of course, in the end only you can make the call.
Of course, in the end only you can make the call.
In New York and a few other states, you need it working or you will fail emissions inspection. Don't know where the OP is located, though.
If I lived in a state that didn't require it, I'd just remove the whole thing. But then again, both my B5s are 99s with AEBs, so I don't even have an SAI system to worry about!
If I lived in a state that didn't require it, I'd just remove the whole thing. But then again, both my B5s are 99s with AEBs, so I don't even have an SAI system to worry about!
I am lucky enough not to have to pass inspection so I am not in a huge hurry to fix it, but at some point I will want to get the light turned off so I can sell it.Just my 2 cents, but it seems like you might spend a lot of time tracking down a "problem" that really doesn't affect proper operation of the vehicle. If you just hate having the CEL on, or want to figure it out for the challenge of it, then nobody will fault you for that. But in reality a slightly low SAI flow in one bank will not cause enough emissions increase over the life of the car to offset the energy and resources you might expend fixing it.
Of course, in the end only you can make the call.
Besides, it is a nice car and I hate to have the CEL on all the time!
The valve may have seized partially open. Enough for you to breathe through, but not enough for the O2 sensor to be happy.
K.i.s.s.
OK, this one is a reminder to everyone to keep it simple. I hdn't gotten around to this since my last post, but while changing the oil, I took a look at the SAIP and low and behold, the hose from the SAIP to the combis was unhooked. I plugged it back in to the pump, secured it with a cable tie and problem resolved! :banghead:
I should have taken a look at the obvious first, but I assumed that since the code was only one side, it HAD to be the combi. Lesson learned after about 3 hours of "schooling"...
OK, this one is a reminder to everyone to keep it simple. I hdn't gotten around to this since my last post, but while changing the oil, I took a look at the SAIP and low and behold, the hose from the SAIP to the combis was unhooked. I plugged it back in to the pump, secured it with a cable tie and problem resolved! :banghead:
I should have taken a look at the obvious first, but I assumed that since the code was only one side, it HAD to be the combi. Lesson learned after about 3 hours of "schooling"...
1 - 9 of 9 Posts
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