Vacuum diagram

Tiny
1000DLRBILL
  • MEMBER
  • 2000 CHEVROLET MALIBU
I replaced the intake manifold (lower gaskets). Everything is working fine except during reassembly I was unable to locate the vacuum line that hooks to the upper intake plenum right by the fuel pressure regulator. After some searching I found the broken off end of the line in the engine compartment. I cannot find the rest of the line or any unused vacuum port anywhere. There is no vacuum diag. Anywhere on the car or in my Haynes repair manual. My gas milage is poor. No engine trouble codes are being set. It doesn't hook to the MAP sensor. The MAP sensor on the v6 is mounted directly to the upper intake plenum by the ignition coils, and connects to the plenum with a very short tube. It is connected and working. There is also a line which goes from the MAP to the fuel pressure regulator. The line and port in question is located close to the fuel pressure regulator on the front driver side corner of the upper intake plenum.
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Wednesday, December 26th, 2007 AT 1:26 PM

15 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Hello,

Here is a vacuum line diagram for he engine and emissions systems.

Here is how you find a vacuum leak

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Here are the diagrams (below)

Please let us know what happens.

Cheers
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Sunday, December 30th, 2007 AT 6:49 PM
Tiny
1000DLRBILL
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Thank you this is just what I needed. I just want to say it sure is great having a site where you can go and get great information for free god bless 2Carpros
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Sunday, December 30th, 2007 AT 8:12 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
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Good to hear, please use 2CarPros anytime we are here to help.

Cheers, Ken
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Thursday, November 9th, 2017 AT 7:13 PM
Tiny
BREN JIMENEZ
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  • 1 POST
Hey on the first image number 8 is that the white plastic line that connects on the top side of the plenum and runs threw the wire loom toward the fire wall?
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Thursday, March 8th, 2018 AT 2:40 PM
Tiny
KEN L
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That vacuum line runs the HVAC system inside the car.

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
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Friday, March 9th, 2018 AT 12:47 PM
Tiny
MELLOWDANZSB
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  • 2 POSTS
The part Bren Jimenez is talking about how would I be able to fix it that parts runs down all the way to the bottom of the steering wheel & where can I get That part & what that part is called thanks
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Wednesday, May 8th, 2019 AT 8:33 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
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Can you please shoot a quick video with your phone so we can see what's going on? That would be great. You can upload it here with your response.
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Thursday, May 9th, 2019 AT 1:05 PM
Tiny
MELLOWDANZSB
  • MEMBER
  • 2 POSTS
2002 Chevy Malibu LS 170,702 miles
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Thursday, May 9th, 2019 AT 3:10 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,554 POSTS
Nice video, yep use a simple vacuum hose to connect the two you should be good to go. You can get the hose from the auto parts store for cheap. Use 2CarPros anytime, we are here to help. Please tell a friend.
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Friday, May 10th, 2019 AT 10:13 AM
Tiny
BIG_CHUNKEY
  • MEMBER
  • 3 POSTS
  • 2000 CHEVROLET MALIBU
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 116,850 MILES
My check engine light is on and I took it a local parts store to get the code scanned and it said small emissions evap leak and I need to know what can cause it and where the vacuum lines are on my car and what can cause this if it is a vacuum leak please help so my light will go off

Thank you

Gabe
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Tuesday, October 29th, 2019 AT 5:26 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Start by checking your gas cap, if okay have the evaporative control system smoke tested
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Tuesday, October 29th, 2019 AT 5:26 PM (Merged)
Tiny
BIG_CHUNKEY
  • MEMBER
  • 3 POSTS
Is the smoke test something I can do myself or should I have a auto tech do it
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Tuesday, October 29th, 2019 AT 5:26 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
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A problem with the Evap system can get technical best just go to who can do it
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Tuesday, October 29th, 2019 AT 5:26 PM (Merged)
Tiny
BIG_CHUNKEY
  • MEMBER
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Well something I left out the engine light went off by itself and came back on a couple days ago should I get the code rescanned
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Tuesday, October 29th, 2019 AT 5:26 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Get it rescanned
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Tuesday, October 29th, 2019 AT 5:26 PM (Merged)

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