Which sensor?
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More Turbo
Joined: Apr 2011
Posts: 627
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From: Western Connecticut
Which sensor?
Upon doing the R&R on my FICM, I noticed a sensor that is bolted to the front FICM bracket, and connects to a stainless steel tube that runs into the L\S exhaust manifold. Which sensor is this? Is it worth replacing since it's easy to do at this point?
Mike
Mike
Elder User
Joined: Jan 2011
Posts: 951
Likes: 2
From: Center, Texas
That sensor is the exhaust backpressure sensor. As far as replacing it, mine is out and fixing to be replaced but the way I found out was on my scanguage 2 the exhaust backpressure reading was half what the baro and map pressure read at key on engine off, these 3 should all read the same within .5. Hope that helps.
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More Turbo
Joined: Apr 2011
Posts: 627
Likes: 1
From: Western Connecticut
Thanks for the reply. I have the FICM out andwith the bracketry and airbox removed it's a clean shot to the sensor now. I won't be able to use ScanGauge like you did until I restart the engine after I reinstall all that crap. Is that sensor a high failure item, and does it make sense to replace it now?
Mike
Mike
Junior User
Joined: Nov 2011
Posts: 95
Likes: 0
From: SE Louisiana
I would clean it, tube & fitting. I used brake cleaner, Q-tips & a wire. Don't poke into sensor too far.
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Hotshot
Joined: Apr 2010
Posts: 19,061
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From: Saratoga Springs,UT
Thanks for the reply. I have the FICM out andwith the bracketry and airbox removed it's a clean shot to the sensor now. I won't be able to use ScanGauge like you did until I restart the engine after I reinstall all that crap. Is that sensor a high failure item, and does it make sense to replace it now?
Mike
Mike
You Dont Check it with the engine running
Check it at KOEO=Key On Engine Off
You dont even need the FICM in to check it the EBP just needs to be pluged up to the wire harnesss
Now you will set a CEL if you turn the KEY ON with the FICM out but thats no Biggie should turn off when you get it back in
I would check it B4 I would replace it
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