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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
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VACUUME LEAK??

  • Thread starter Thread starter howiefisher
  • Start date Start date Jun 17, 2007

howiefisher

New Member
Jun 8, 2007
154
1
0
Ont Canada
Jun 17, 2007
#1
  • Jun 17, 2007
  • #1
do you guys no if there are vacuume lines in side my wheel walls any where or they all under the hood ?
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
33
129
Jun 17, 2007
#2
  • Jun 17, 2007
  • #2
The AIR, EGR and EVAP equipment have lines which run into the passenger fender well.
 

RIO5.0

15 Year Member
Feb 16, 2001
6,892
8
128
N.H.
Jun 17, 2007
#3
  • Jun 17, 2007
  • #3
Like Hissin mentioned...there's a few in there...


 

Stanger007

Founding Member
Sep 26, 2001
2,015
2
46
Baton Rouge, LA
Jun 18, 2007
#4
  • Jun 18, 2007
  • #4
Here's a vacuum diagram. There is also a vacuum line going into the driver's side fenderwell for the cruise control if you have it. (Speed Control Servo in the diagram)

 

howiefisher

New Member
Jun 8, 2007
154
1
0
Ont Canada
Jun 18, 2007
#5
  • Jun 18, 2007
  • #5
do you guys no witch line would most likly cause lean condition and loss of power at wot .or could any of them cause that i dont hear any hissing sound under the hood i am going to bring home my tethis scope to hear better .the codes are 172 and 176 i bought 2 new 02 sensors just want to make sure there is no vacuume leak cause that would set the same code right lean ??
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
33
129
Jun 18, 2007
#6
  • Jun 18, 2007
  • #6
Lean codes can definitely be the result of a vac leak (or fuel starvation, bad MAF, bad sensory input from other devices, etc). A lack of fuel pressure or MAF issue can REALLY rear their head at WOT.

IIRC, you are going to do some vac testing to watch for a drop after sustained constant RPM's (checking exhaust restriction). Since you will have the gauge hooked up: In general, look for about 20" hg of vac at idle.

Good luck.
 
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