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Thread: SES light
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03-04-2013, 09:50 AM #1
- Join Date
- Sep 2011
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- England
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SES light
My SES light came on today as I turned the heat to the wind shield and feet position and the fan speed to 2. I'm not sure if it was a coincidence or if it was related, but I don't have access to a code reader at the moment.
The car runs fine so I was wondering if it would be alright to drive it in the meantime or should I get it looked at as soon as possible?
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03-04-2013, 10:01 AM #2
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- Jan 2010
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- culver city, Ca.
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- 460
Blackened fire chicken- 2000 Pontiac Trans Am WS6
sounds like a coincidence to me. Thats just my opinion though...its still alright to drive, but you should still get it looked at soon so you know what codes you have. If the light is flashing pull over,turn it off, and get a tow truck!
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03-04-2013, 06:14 PM #3
As long as the light isn't flashing you are probably ok. As a precautionary measure, I always look under the hood and check fluids and gauge readings when the SES comes on if I do not have my scanner on hand.
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03-05-2013, 04:21 AM #4
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- Jan 2010
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- East of Cleveland, Ohio
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- 3,827
Black- 99 WS.6 - Modified
Agree. Sounds like a coincidence with the fan and heat. Getting the codes read is your best option.
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03-05-2013, 09:19 AM #5
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- Sep 2011
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- England
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- 161
Thanks for the replies everyone.
I went to my local garage today and I have a "P1416 AIR System Bank 2" code. I presume that's the passenger side, does anyone know specifically what's wrong from the code number?
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03-05-2013, 09:27 AM #6
Probably the check valve. Or maybe the air pump starting to go bad.
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03-05-2013, 12:17 PM #7
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- Sep 2011
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- England
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- 161
Can I do anything in the meantime to stop a code being thrown again, such as pulling fuses and relays?
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03-05-2013, 12:20 PM #8
You can try pulling the fuse. But it may not help. You can also try cleaning the check valve and see if that helps or replace it altogether. Start with the little things.
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03-05-2013, 05:39 PM #9
Agree. Most likely the check valve. Here is a diagnostic for the secondary air system: http://www.ls1.com/forums/f6/seconda...emoval-130641/
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03-06-2013, 10:22 AM #10
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- Jan 2010
- Location
- culver city, Ca.
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- 460
Blackened fire chicken- 2000 Pontiac Trans Am WS6
the check valves are really easy to replace, and they aren't too expensive either. I think they're like $15-$20 and it's like a 10 minute job (if they aren't rusted on too bad, haha) I've replaced 2 of them on the passenger side so far...just be careful and don't bend/break the pipe that's connected to the check valve.
heres the part number "ACDelco 214-1045 Valve Assembly"SMOKE 'EM IF YOU GOT 'EM!
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03-06-2013, 11:02 AM #11
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- Sep 2011
- Location
- England
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If it is the check valve, rather than waste money on replacing something that I will eventually remove, would it be possible to simply cut off the check valves leaving the tubes just behind them in place? This way the pump would still be able to draw air and blow it through the remaining pipes where the check valves used to be. This would be a temporary measure until a tune and wouldn't be a problem for emissions in the UK.
Naturally I would remove the check valves and remaining pipes and install block-off plates.
Does anyone know if taking this approach would throw a code?
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03-06-2013, 11:14 AM #12
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- Jan 2010
- Location
- culver city, Ca.
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- 460
Blackened fire chicken- 2000 Pontiac Trans Am WS6
no, don't do that! you need the check valves...or you can remove the whole AIR system and get it tuned, but that'll cost some money AND you'll have trouble passing a smog inspection unless you know somebody :wink wink: haha
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03-06-2013, 11:37 AM #13
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- Sep 2011
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- England
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03-06-2013, 11:46 AM #14
I am not sure how the system detects a faulty check valve. The SES was coming on when we bought our car and it turned out to be the passenger side check valve. I replaced them both and they were a complete bugger to remove. I ended up unbolting the tubes from the manifolds and then heated the fittings on the check valves up with a torch to break them free. Around a year or so later, I simply removed the entire system from the car.
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03-06-2013, 12:13 PM #15
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- Sep 2011
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- England
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My guess is that the valve doesn't fully open when the pump is running, that's why I thought I could get away with having just the tubes temporarily. I presume the check valve is there to stop exhaust gases going up the tube while the pump isn't pumping. That's where I got the thought that if it's detached from the manifold and check valves, there would be no chance of exhaust gases going up the pipe, but air could flow freely down the pipe while the pump is working. I would have thought the PCM wouldn't have cause to think anything was wrong.
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