Notices
928 Forum
Sponsored by:
Sponsored by: 928 Specialists

two questions about engine bay wiring

 
Old 10-03-2010, 07:51 PM
  #1  
drwhosc
Addict
Rennlist Member
Thread Starter
 
drwhosc's Avatar
 
Join Date: Dec 2007
Location: Spartanburg SC
Posts: 617
Default two questions about engine bay wiring

Ok;

I finally have gotten back to my Throttle boody RnR, and I have a couple of questions. I have an 88 S4

1. Driver's side.. There is what looks like a plug for a knock sensor at the end of the fuel injection harness. There is also one that comes over from the other side. I am pretty sure that the one crossing the engine is the one that hooked up to the front knock sensor.

a. there seems to be three mounting points for knock sensors, I only had two installed. AM I missing one???

2. There is a gray wire with a black cap, and three prongs, male.. I have no idea where this one goes. It is comming from the back of the engine in the center. I can post a picture if it helps. Knowing my luck, it will go on the bottom side of the TB.

thanks for the help....
drwhosc is offline  
Old 10-03-2010, 08:38 PM
  #2  
Mrmerlin
Petie3rd
Rennlist Member

This Post Sponsored by:
Dow Corning« & DeoxIT«
 
Mrmerlin's Avatar
 
Join Date: May 2004
Location: Philly PA
Posts: 22,663
Default

possibly goes to the crank position sensor, located at the rear of the V,
if you swap the rear knock sensor with the CPS the car wont run
Mrmerlin is offline  
Old 10-04-2010, 06:50 PM
  #3  
drwhosc
Addict
Rennlist Member
Thread Starter
 
drwhosc's Avatar
 
Join Date: Dec 2007
Location: Spartanburg SC
Posts: 617
Default Now down to one question

OK, the Hall Sensor was right on for the front.

Here are pics of the connector at the back of the engine. Still trying to determine where this goes.

Last edited by drwhosc; 01-28-2014 at 01:24 PM.
drwhosc is offline  
Old 10-04-2010, 06:56 PM
  #4  
SeanR
Running up the Odo'
Rennlist Member
 
SeanR's Avatar
 
Join Date: Apr 2006
Location: DFW Texas
Posts: 34,539
Default

That's a reference sensor that is used with shop equipment that no one has. Not used. You can actually take it all the way out.
SeanR is offline  
Old 10-04-2010, 07:20 PM
  #5  
Jim M.
Addict
Rennlist Member
 
Jim M.'s Avatar
 
Join Date: Nov 2004
Location: DFW Texas
Posts: 3,456
Default

And to answer your other question there are only two knock sensors.
Jim M. is offline  
Old 10-04-2010, 07:41 PM
  #6  
jeff spahn
Addict
Rennlist Member
 
jeff spahn's Avatar
 
Join Date: Nov 2009
Location: Dubuque, IA
Posts: 7,479
Default

Ok, so what was the reference sensor?
jeff spahn is offline  
Old 10-04-2010, 08:16 PM
  #7  
drwhosc
Addict
Rennlist Member
Thread Starter
 
drwhosc's Avatar
 
Join Date: Dec 2007
Location: Spartanburg SC
Posts: 617
Default

cool.... now I dont have to worry. I looked at lots of pics, and it was baffelling. I also looked a a car today, and that plug is bolted to a bracket, and earlier ones have a cap.

thanks for clearing things up. But now all the OCD folks are going to want the reference tool
drwhosc is offline  

Thread Tools
Search this Thread

Contact Us - About Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: