How to replace 2000 to 2005 Cadillac Seville STS Intake Manifold Plenum Coupler

How to replace 2000 to 2005 Cadillac Seville STS Intake Manifold Plenum Coupler

The intake manifold coupler gets replaced in this 2003 Cadillac STS.

This is some really old footage that I found and now that I have a channel to upload it to I decided to do so. This fixed the hesitation at idle and stumbling on take off that was caused by a huge vacuum leak in the rubber part of the plenum. This also works on other vehicles that use this same part that often fails. Also the intake gaskets and throttle body gasket was replaced as well since the intake was removed to access the plenum boot. Any vehicle with a 4.6l northstar this applies to.

#vacuumleak #roughidle #northstar #12555840 #repair

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Aaron Jacobs says:

Great video. Good job showing the entire job without just the glory shots. You two make a great team.

Bee Gee says:

At the shop for this same shit. Geezus

Venezuela Dockery says:

$571.90 is what I'm being charged for this work. Thanks for showing it to me.

Malm ify says:

Why ridiculous music???!!!

Robin Smith says:

Thanks for the video, were you able to hear that leak with the motor running?
I got high rpm idle and surging going on after the motor warms up. I can hear alot air right after the throttle body…

Coo DeVille says:

I like how you show that crack where the vacuum leak is. You hear a lot of guys on here talking but not showing. Keep up the good work.

Coo DeVille says:

How much was the part?

larbah manow says:

how long did it actually take?

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