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Old 11-10-2018, 08:44 PM   #1
FutureSat
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2001 SL1
2002 L-Series 2.2L Wagon
Default Help to ID valve feed off headers 1.9L SOHC

Recently, I replaced my headers. Yes they fit direct on my 2001 SL1. reason why is because I needed to replace the CAT and I went with a stainless steel straight pipe for basically the same cost for the part.

however, it wasn't an exact match to the OEM headers. there is some type of tap off from the headers that feeds some type of valve/sensor. ATM i put the new headers on and the car is running without this valve hooked up.. IDK what valve this is I'm looking at manuals. any help? is this important.. IDK b/c the OEM headers have a underside exhaust vane/vine that was clogged with carbon build up when i took off the old OEM headers that feeds this tap off exhaust pipe to this sensor..

Advise, Help to id.. if it is important or if i can delete it. IDK

Thanks
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File Type: jpg heads.jpg (56.4 KB, 12 views)
File Type: jpg Screen Shot 2018-11-10 at 7.38.43 PM.jpg (78.8 KB, 11 views)

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Old 11-10-2018, 08:58 PM   #2
trottida
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1999 SL2
2001 SL1
Default Re: Help to ID valve feed off headers 1.9L SOHC

That is the air injection system; part of the emissions system. You'll get some codes and a service engine soon light without it hooked up.

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Old 11-11-2018, 06:19 PM   #3
FutureSat
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Default Re: Help to ID valve feed off headers 1.9L SOHC

Thanks, Code that popped up is the P0301.

I will have to figure out a solution to this. IDK at the moment.

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Old 11-11-2018, 07:12 PM   #4
laser3kw
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2000 SC1
Default Re: Help to ID valve feed off headers 1.9L SOHC

Did your old header have the connection?
Here is some screen shots of a header with the connection port. The flange side shows the port path from the tubes to the connection port. You could make a manifold to connect to the air pump output and splits to the header tubes. It would take some welding skills.
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File Type: jpg obx header 3.jpg (27.5 KB, 5 views)
File Type: jpg obx header.jpg (75.8 KB, 5 views)

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