Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Intake manifold sensor

Thread Tools
 
Search this Thread
 
Old 10-07-2010, 11:05 AM
  #1  
supercedar
Rennlist Member
Thread Starter
 
supercedar's Avatar
 
Join Date: Jul 2010
Location: Mukilteo, Wa.
Posts: 990
Received 22 Likes on 10 Posts
Default Intake manifold sensor

Should the sensor on the top rear of intake turn where the wires connect on my 1988 S4?
Thank you!
Thomas
Old 10-07-2010, 11:09 AM
  #2  
dprantl
Race Car
 
dprantl's Avatar
 
Join Date: Dec 2003
Location: Atlanta, GA
Posts: 4,477
Likes: 0
Received 3 Likes on 3 Posts
Default

No.

Dan
'91 928GT S/C 475hp/460lb.ft
Old 10-07-2010, 11:13 AM
  #3  
supercedar
Rennlist Member
Thread Starter
 
supercedar's Avatar
 
Join Date: Jul 2010
Location: Mukilteo, Wa.
Posts: 990
Received 22 Likes on 10 Posts
Default

Originally Posted by dprantl
No.

Dan
'91 928GT S/C 475hp/460lb.ft
Thanks Dan, What is its purpose?
Old 10-07-2010, 11:28 AM
  #4  
dprantl
Race Car
 
dprantl's Avatar
 
Join Date: Dec 2003
Location: Atlanta, GA
Posts: 4,477
Likes: 0
Received 3 Likes on 3 Posts
Default

I believe that is a temp sensor that will turn on the fans after the engine is shut off if the intake air temp is too high. If something on this sensor is turning, then it may be a vacuum leak.

Dan
'91 928GT S/C 475hp/460lb.ft
Old 10-07-2010, 11:53 AM
  #5  
auzivision
Drifting
 
auzivision's Avatar
 
Join Date: Jun 2006
Location: Indianapolis Area
Posts: 2,705
Received 69 Likes on 37 Posts
Default

That hole doesn't go all the way through the metal so no air will leak. Also, I do believe it will trigger the fans if you short out the wires and push the hood closed button. I was also thinking it can retard the timing slightly if it senses the intake is hot.
Old 10-07-2010, 12:54 PM
  #6  
SQLGuy
Three Wheelin'
 
SQLGuy's Avatar
 
Join Date: Mar 2010
Location: Colorado Springs, CO USA
Posts: 1,307
Likes: 0
Received 3 Likes on 3 Posts
Default

Originally Posted by auzivision
That hole doesn't go all the way through the metal so no air will leak. Also, I do believe it will trigger the fans if you short out the wires and push the hood closed button. I was also thinking it can retard the timing slightly if it senses the intake is hot.
It's just a switch for the fans. I'm pretty sure there's a separate inlet air temp sensor that's used to adjust timing and mixture... the one built into the MAF may be used for this dual purpose.
Old 10-07-2010, 01:24 PM
  #7  
Rob Edwards
Archive Gatekeeper
Rennlist Member
 
Rob Edwards's Avatar
 
Join Date: Sep 2002
Location: Irvine, CA
Posts: 17,304
Received 2,548 Likes on 1,232 Posts
Default

The two connector terminals are molded into some sort of plastic insert in the brass body of the sensor (928 606 217 00). On the GTS mine was turning inside the sensor, and Greg took it and threw it in the trash.
Old 10-07-2010, 01:51 PM
  #8  
supercedar
Rennlist Member
Thread Starter
 
supercedar's Avatar
 
Join Date: Jul 2010
Location: Mukilteo, Wa.
Posts: 990
Received 22 Likes on 10 Posts
Default

You guys are great.
Thomas
Old 10-07-2010, 02:12 PM
  #9  
Shark_Week
Racer
 
Shark_Week's Avatar
 
Join Date: Aug 2009
Location: SD, Ca.
Posts: 419
Likes: 0
Received 0 Likes on 0 Posts
Default

Rob, did you get a new sensor?
Old 10-07-2010, 02:18 PM
  #10  
Rob Edwards
Archive Gatekeeper
Rennlist Member
 
Rob Edwards's Avatar
 
Join Date: Sep 2002
Location: Irvine, CA
Posts: 17,304
Received 2,548 Likes on 1,232 Posts
Default

Yep, $35ish.



Quick Reply: Intake manifold sensor



All times are GMT -3. The time now is 02:23 PM.