Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!

Whats this

Thread Tools
 
Search this Thread
 
Old 05-12-2012, 10:13 AM
  #1  
Member
Thread Starter
iTrader: (1)
 
pvr007's Avatar
 
Join Date: Apr 2011
Location: San Diego CA
Posts: 351
Likes: 0
Received 0 Likes on 0 Posts
Car: 88 RS Camaro,70 chevelle,92 Geo
Engine: 305 TBI
Transmission: 5 Speed Manual
Whats this

Name:  2017d00c.jpg
Views: 48
Size:  183.0 KB
some sort of ground
Name:  fb5d6436.jpg
Views: 52
Size:  229.1 KB Smog Pump... where does that connect to?
Name:  99da8c70.jpg
Views: 78
Size:  170.0 KB
Small cable... dunno what it is... thanks for the help
Old 05-12-2012, 10:21 AM
  #2  
Supreme Member

iTrader: (3)
 
conlinj's Avatar
 
Join Date: Mar 2003
Location: Rockledge, PA
Posts: 1,121
Likes: 0
Received 0 Likes on 0 Posts
Re: Whats this

First pic engine ground, needs to attach to the back of the cyl head.

Second pic, look for the part of the air system that doesn't have anything connected to it (the crossover pipe from the driver side manifold, the down pipe to the converter or the pass side manifold)

Third could be the vacuum hose that goes to the heater diverter valve, hard to tell from that pic/angle
Old 05-12-2012, 10:22 AM
  #3  
Supreme Member

iTrader: (1)
 
sofakingdom's Avatar
 
Join Date: Sep 2005
Posts: 26,089
Received 1,681 Likes on 1,276 Posts
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Whats this

1. should go to a bolt on the rear-facing surface of the pass side head

2. hard to tell which one it is for sure, but either goes to the AIR pump, or to one of the AIR check valves

3. vacuum line in HVAC system; could be either the "supply" line, or the one to the heater control valve
Old 05-12-2012, 10:26 AM
  #4  
Member
Thread Starter
iTrader: (1)
 
pvr007's Avatar
 
Join Date: Apr 2011
Location: San Diego CA
Posts: 351
Likes: 0
Received 0 Likes on 0 Posts
Car: 88 RS Camaro,70 chevelle,92 Geo
Engine: 305 TBI
Transmission: 5 Speed Manual
Re: Whats this

could this ground be giving me CEL codes?
Old 05-12-2012, 10:32 AM
  #5  
Supreme Member

iTrader: (3)
 
conlinj's Avatar
 
Join Date: Mar 2003
Location: Rockledge, PA
Posts: 1,121
Likes: 0
Received 0 Likes on 0 Posts
Re: Whats this

possibly, hook everything back up, clear the codes and drive the car see if they come back
Old 05-12-2012, 10:34 AM
  #6  
Member
Thread Starter
iTrader: (1)
 
pvr007's Avatar
 
Join Date: Apr 2011
Location: San Diego CA
Posts: 351
Likes: 0
Received 0 Likes on 0 Posts
Car: 88 RS Camaro,70 chevelle,92 Geo
Engine: 305 TBI
Transmission: 5 Speed Manual
Re: Whats this

im getting knock sensor..... EGR and O2 sensor.... lets see if this fixes the problems =/
Old 05-12-2012, 10:54 AM
  #7  
Member
Thread Starter
iTrader: (1)
 
pvr007's Avatar
 
Join Date: Apr 2011
Location: San Diego CA
Posts: 351
Likes: 0
Received 0 Likes on 0 Posts
Car: 88 RS Camaro,70 chevelle,92 Geo
Engine: 305 TBI
Transmission: 5 Speed Manual
Re: Whats this

I cheated... I conected the wire to valve cover nut... I have the fuel ground the same way
Old 05-12-2012, 11:07 AM
  #8  
Supreme Member

iTrader: (8)
 
TTOP350's Avatar
 
Join Date: Oct 2001
Location: Il
Posts: 11,712
Received 760 Likes on 514 Posts
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Whats this

Originally Posted by pvr007
I cheated... I conected the wire to valve cover nut... I have the fuel ground the same way
That kinda works but fix it properly soon.
Old 05-12-2012, 11:25 AM
  #9  
Member
Thread Starter
iTrader: (1)
 
pvr007's Avatar
 
Join Date: Apr 2011
Location: San Diego CA
Posts: 351
Likes: 0
Received 0 Likes on 0 Posts
Car: 88 RS Camaro,70 chevelle,92 Geo
Engine: 305 TBI
Transmission: 5 Speed Manual
Re: Whats this

mmm i cant reach back there.... big hands
Old 05-12-2012, 11:33 AM
  #10  
Supreme Member

 
TreeFiddy's Avatar
 
Join Date: Jun 2005
Location: Sydney, Australia
Posts: 1,380
Likes: 0
Received 5 Likes on 5 Posts
Car: '86 TA
Engine: '74 350
Transmission: 700r4
Axle/Gears: 2.77
Re: Whats this

Needs to connect to a firm bolt on the block/heads that won't come undone; vc nuts tend to back off over time.
Old 05-12-2012, 11:34 AM
  #11  
Member
Thread Starter
iTrader: (1)
 
pvr007's Avatar
 
Join Date: Apr 2011
Location: San Diego CA
Posts: 351
Likes: 0
Received 0 Likes on 0 Posts
Car: 88 RS Camaro,70 chevelle,92 Geo
Engine: 305 TBI
Transmission: 5 Speed Manual
Re: Whats this

ill just re tighten them once in a while
Old 05-12-2012, 12:09 PM
  #12  
Supreme Member

iTrader: (8)
 
TTOP350's Avatar
 
Join Date: Oct 2001
Location: Il
Posts: 11,712
Received 760 Likes on 514 Posts
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Whats this

Yeah its a very tough spot to work in. I get em from the bottom with the trans Xmember undone.
That air tube also goes to the ground stud on the back of the head.
Old 05-14-2012, 02:46 PM
  #13  
Junior Member
 
Cleric69's Avatar
 
Join Date: Mar 2011
Location: Alamogordo, NM
Posts: 37
Likes: 0
Received 0 Likes on 0 Posts
Car: '87 IROC-Z
Engine: 350ci
Transmission: 700r4 rebuilt
Axle/Gears: 3.73
Re: Whats this

My ground is just connected to the rear-most header bolt. Of course I have no smog/AC/heater/kitchen sink to get in the way...
Old 05-17-2012, 11:30 AM
  #14  
Junior Member
 
eighty8's Avatar
 
Join Date: Mar 2012
Posts: 18
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 IROC-Z
Engine: 305 TBI
Transmission: TH 350
Re: Whats this

Is the last one a small cable or a vacuum line. If it's a vacuum line check this out https://www.thirdgen.org/forums/tbi/...egr-valve.html scroll down and find the diagram
Old 05-17-2012, 11:33 AM
  #15  
Member
Thread Starter
iTrader: (1)
 
pvr007's Avatar
 
Join Date: Apr 2011
Location: San Diego CA
Posts: 351
Likes: 0
Received 0 Likes on 0 Posts
Car: 88 RS Camaro,70 chevelle,92 Geo
Engine: 305 TBI
Transmission: 5 Speed Manual
Re: Whats this

Suposedly thats for an automatic... 5 speed require a t for the air pump
Old 05-17-2012, 11:44 AM
  #16  
Junior Member
 
eighty8's Avatar
 
Join Date: Mar 2012
Posts: 18
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 IROC-Z
Engine: 305 TBI
Transmission: TH 350
Re: Whats this

My bad, didn't notice you were rockin' the stick




All times are GMT -5. The time now is 08:10 PM.