C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Removing intake what else should I replace

Thread Tools
 
Search this Thread
 
Old Apr 13, 2019 | 12:23 PM
  #1  
wifes97C5's Avatar
wifes97C5
Thread Starter
Heel & Toe
 
Joined: Mar 2019
Posts: 20
Likes: 1
Default Removing intake what else should I replace

So I finally decided my hands are not small enough to get to the Oil Sending unit and I am not cutting up the car(wife would cry). So I removed the intake. I found my PCV hoses cracked and beyond repair so I am ordering a new OEM part.

My question is what else should I replace while I am in there. I am already replacing the intake gasket, there is a sensor right next to the Oil sending unit but I am not sure if it goes bad or not. The corvette has 125k on it so any help would be great I don't want to have to tear into this again.

Last edited by wifes97C5; Apr 13, 2019 at 01:31 PM.
Reply
Old Apr 13, 2019 | 01:34 PM
  #2  
Smoken1's Avatar
Smoken1
.
Supporting Lifetime Gold
10 Year Member
St. Jude 10 Year Donor
Liked
Community Favorite
 
Joined: Apr 2013
Posts: 5,033
Likes: 1,156
From: Oregon
St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23
Default

That is your CPS no need to mess with it unless it is leaking
Reply
Old Apr 13, 2019 | 02:13 PM
  #3  
Pounder's Avatar
Pounder
1/4 mile/AutoX
Supporting Lifetime
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2014
Posts: 11,441
Likes: 2,186
From: Buffalo Texas
Default

re-do steam lines,https://www.summitracing.com/parts/tfs-306sb601k
check knock sensors, (rusty)
relocate oil sender
Reply
Old Apr 13, 2019 | 02:15 PM
  #4  
wifes97C5's Avatar
wifes97C5
Thread Starter
Heel & Toe
 
Joined: Mar 2019
Posts: 20
Likes: 1
Default

It isnt leaking but the OPS was, actually the car runs great except for the oil sensor leak and it causing a service engine soon at the odometer
Reply
Old Apr 13, 2019 | 02:17 PM
  #5  
wifes97C5's Avatar
wifes97C5
Thread Starter
Heel & Toe
 
Joined: Mar 2019
Posts: 20
Likes: 1
Default

knock sensors seam clean, dont really want to do the oil sensor relocate yet, I got 125k out of the last sensor, what would I want to redo the steam lines?

Last edited by wifes97C5; Apr 13, 2019 at 02:19 PM.
Reply
Old Apr 13, 2019 | 08:46 PM
  #6  
pjdbm's Avatar
pjdbm
Drifting
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2017
Posts: 1,486
Likes: 343
From: Long Island New York
Default

Consider replacing secondary air check valve and extend the small vacuum line in the back of the intake to make it easier getting back on. If knock sensors are good, run a bead of silicon around each to keep water out.

have fun
Reply
Old Apr 14, 2019 | 07:46 AM
  #7  
Brunello's Avatar
Brunello
Burning Brakes
 
Joined: Aug 2018
Posts: 1,043
Likes: 329
Default

Originally Posted by pjdbm
Consider replacing secondary air check valve and extend the small vacuum line in the back of the intake to make it easier getting back on. If knock sensors are good, run a bead of silicon around each to keep water out.

have fun
Agree on extending vacuum line. I read a good article that helped me fashion 6” extension out of 5/32 vac line and some plastic connectors. Not sure how I would have done it otherwise. And I took intake off, installed and off again after coolant crossovers leaked so I really appreciate it now. I did replace sending unit. Replaced steam vents but only because of ls6 intake install.
Reply
Old Apr 14, 2019 | 10:45 AM
  #8  
wifes97C5's Avatar
wifes97C5
Thread Starter
Heel & Toe
 
Joined: Mar 2019
Posts: 20
Likes: 1
Default

Where is this vacuum line that needs to be lengthened? I am going to silicone the tops of the knock sensors as they look like new and gave no issues. I ordered the secondary air check. Thanks for all the help guys I want this to be a one and done as far as removing the intake.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Apr 14, 2019 | 11:25 AM
  #9  
Brunello's Avatar
Brunello
Burning Brakes
 
Joined: Aug 2018
Posts: 1,043
Likes: 329
Default

Originally Posted by wifes97C5
Where is this vacuum line that needs to be lengthened? I am going to silicone the tops of the knock sensors as they look like new and gave no issues. I ordered the secondary air check. Thanks for all the help guys I want this to be a one and done as far as removing the intake.
The vac tube is a thin plastic tube sticking out to the left of middle in rear of where intake would be. Should be an elbow fitting on the intake where it fits in. I took off the elbow and fitted in to a 6” section of rubber tugging with plastic fitting. Slid tube over plastic vac tube (looks like a black straw you would get in a mixed drink) and is easily connected when reinstalling.
Reply
Old Apr 14, 2019 | 11:28 AM
  #10  
wifes97C5's Avatar
wifes97C5
Thread Starter
Heel & Toe
 
Joined: Mar 2019
Posts: 20
Likes: 1
Default

Perfect thanks I found it, I didn't even notice it when I took the intake off. You guys rock!!!
Reply
Old Apr 14, 2019 | 11:48 AM
  #11  
pjdbm's Avatar
pjdbm
Drifting
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2017
Posts: 1,486
Likes: 343
From: Long Island New York
Default


Reply
Old Apr 14, 2019 | 11:50 AM
  #12  
pjdbm's Avatar
pjdbm
Drifting
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2017
Posts: 1,486
Likes: 343
From: Long Island New York
Default

You mentioned that you dont want to do this job again.... Not that it was a bad job but I felt the same and wanted to do it once. This is why I put the oil sender relocate kit in, now if it fails, 5 minutes.
Reply
Old Apr 14, 2019 | 12:20 PM
  #13  
Smoken1's Avatar
Smoken1
.
Supporting Lifetime Gold
10 Year Member
St. Jude 10 Year Donor
Liked
Community Favorite
 
Joined: Apr 2013
Posts: 5,033
Likes: 1,156
From: Oregon
St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23
Default

Originally Posted by pjdbm
You mentioned that you dont want to do this job again.... Not that it was a bad job but I felt the same and wanted to do it once. This is why I put the oil sender relocate kit in, now if it fails, 5 minutes.
I got all the parts from Summit

Reply
Old Apr 14, 2019 | 12:23 PM
  #14  
Smoken1's Avatar
Smoken1
.
Supporting Lifetime Gold
10 Year Member
St. Jude 10 Year Donor
Liked
Community Favorite
 
Joined: Apr 2013
Posts: 5,033
Likes: 1,156
From: Oregon
St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23
Default


After you put it all together it looks like this
Reply
Old Apr 14, 2019 | 09:00 PM
  #15  
lunaticfringe007's Avatar
lunaticfringe007
Racer
Supporting Member
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Mar 2019
Posts: 302
Likes: 51
From: Northern NV
Default

The disgronificator probably needs to be replaced ir cleaned at a minimum.
Reply
Old Apr 15, 2019 | 08:51 AM
  #16  
wifes97C5's Avatar
wifes97C5
Thread Starter
Heel & Toe
 
Joined: Mar 2019
Posts: 20
Likes: 1
Default

Thanks for the sheet I ordered the parts and will be installing it, how did you address the wiring connector and where do you have it located after the modification
Reply
Old Apr 15, 2019 | 09:00 AM
  #17  
pjdbm's Avatar
pjdbm
Drifting
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2017
Posts: 1,486
Likes: 343
From: Long Island New York
Default

You will need thread sealer or plumbers tape for all fittings (I used a good quality thread sealer)

if you run the new new location by the drivers side firewall or where I located it, drivers side fuel rail cover, the harness reaches with no problem. You can use a few tie wraps to secure it in place.
Reply

Get notified of new replies

To Removing intake what else should I replace

Old Apr 15, 2019 | 04:41 PM
  #18  
wcsinx's Avatar
wcsinx
Team Owner
20 Year Member
Liked
 
Joined: Mar 2002
Posts: 24,160
Likes: 78
Default

Originally Posted by pjdbm
Consider replacing secondary air check valve and extend the small vacuum line in the back of the intake to make it easier getting back on. If knock sensors are good, run a bead of silicon around each to keep water out.

have fun
Definitely do this

If you have 120k on the stock valve, you can bet your *** it's thoroughly coked up.
Reply
Old Apr 20, 2019 | 09:24 PM
  #19  
Corvette-Dan's Avatar
Corvette-Dan
Drifting
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2005
Posts: 1,969
Likes: 202
From: Lyons Il
2023 C5 of the Year Finalist - Unmodified
Default

What does that little plastic vacuum line do and what if it becomes disconnected?
Reply
Old Apr 20, 2019 | 10:55 PM
  #20  
Pounder's Avatar
Pounder
1/4 mile/AutoX
Supporting Lifetime
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2014
Posts: 11,441
Likes: 2,186
From: Buffalo Texas
Default

Originally Posted by Dyver
What does that little plastic vacuum line do and what if it becomes disconnected?
runs HVAC funtions, disconnected it will blow air just from the defroster ducks or similar and engine will have open vacuum leak causing many issues !!!!
Reply



All times are GMT -4. The time now is 06:56 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE