WTF is this and does it failing cause my symptoms

[Disco Benny]

Here is this guy I found next to my AFM all taped up from the PO...it soounded like a busted china set and I found it to be completely FUBAR'd on the inside

http://cgi.ebay.com/ebaymotors/ws/eB...8114&viewitem=

My car runs rough at idle and missfires/stumbles...would this cause the engine to run a little warmer (needle just below halfway on the gauge)?

Thanks

[klavender1]

Unplug it and see how it runs. Mine's been unplugged for years with no ill effect. I think it's just an altitude sensor.

[Disco Benny]

well, that work has been done for me already since the insides shake around like a busted china set...the part is def bad even when connected

[Huff]

Hmmm.. Post some pics of the set up so we can get a look at it.

[artoo93]

Yes, that is the altitude pressure sensor. Tells the ECU when the air gets "thinner". Would not have anything to do with temp just fuel.

[Disco Benny]

Would this cause my idle to go High and Low until warmed up???

Also, once warm after a drive the idle is high and stays at ~1100rpm...wth

[artoo93]

When was the last time you cleaned your ICV?

[CW325]

if its broken than leave it unplugged.,it could be causing wrong readings. im pretty sure you only need it for high altitudes

[Disco Benny]

I cleaned my icv when I just changed my cylinder head...

The PO left two used spares in the trunk. Maybe I can play around with those.

The clean AFM I just bought made EVERYTHING run like butt so I had to use my old one

[Disco Benny]

I cleaned my icv when I just changed my cylinder head...

The PO left two used spares in the trunk. Maybe I can play around with those.

The clean AFM I just bought made EVERYTHING run like butt so I had to use my old one