How to Replace Intake Manifold 96-05 Buick LeSabre
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New Intake Manifold from 1AAuto.com 1aau.to/ia/1AEI...
In this video 1A Auto shows you how to remove, replace, and install a new upper intake manifold. This video is applicable to the Buick LeSabre, model years 96, 97, 98, 99, 00, 01, 02, 03, 04, and 05 as well as many other GM vehicles.
This process should be similar on the following vehicles:
1992 Buick LeSabre
1993 Buick LeSabre
1994 Buick LeSabre
1995 Buick LeSabre
1996 Buick LeSabre
1997 Buick LeSabre
1998 Buick LeSabre
1999 Buick LeSabre
🔧 List of tools used:
• Flat Blade Screwdriver 1aau.to/orN/1AX...
• 10mm Socket 1aau.to/oo3/1AX...
• 8mm Socket 1aau.to/oo3/1AX...
• Vacuum
• Wire Cutters
• Ratchet 1aau.to/otf/1AX...
• Socket Extensions 1aau.to/orQ/1AX...
• Torque Wrench 1aau.to/okS/1AX...
• Block of Wood
• Cloth Rags 1aau.to/ocF/1AX...
• Mineral Spirits
• Wire Ties
• Hammer 1aau.to/oe3/1AX...
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Buick LeSabre 1992-1999 7th Gen: • Buick LeSabre 1992-199...
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⚠ DISCLAIMER:
While 1A Auto strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. 1A Auto is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.
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Kudos for the Video! Sorry for chiming in, I would appreciate your initial thoughts. Have you heard about - Trentvorty Safe Vehicle Theorem (do a google search)? It is a good exclusive guide for discovering how to repair your car the simple way without the normal expense. Ive heard some great things about it and my friend after a lifetime of fighting got excellent success with it.
I want to thank you guys. I had a friend come over that is more mechanically inclined and this helped us step-by-step to perform this operation. I really appreciate also sharing the torque recommendations and how to do it. I found out the last person who did this had really loose bolts on this area. Now I know that it will be put in correctly. :-) I also appreciate your meticulous explanations on what to do next. It was exceptionally helpful! Two thumbs up on your video!
+Darrin Smith Thank you for the great reply. We love to empower our customers by showing you how-to perform your own auto repairs while installing our high quality auto parts. Have a great day! 1aauto.com
Should also do a video on the LIM gaskets as well. GM used a plastic based gasket on the LIM which would leak also.
I did both of these on my 2004 Grand Prix last year. Wasn't too bad off a job.
Great video.
Thank you I just completely changed the upper intake manifold on my 1998 Oldsmobile Intrigue in no time.Great video with perfect instructions highly recommended 1A Auto never let me down
+D Seals Thank you for your order! If you would like to leave us a review on Google it would be greatly appreciated www.resellerratings.com/store/1A_Auto_Parts
Thank you for this video. I just did this job today and your video made it much easier. I had already bought a new intake manifold, but I wish I found your site first. Would have saved money....bookmarked it for next time. Cheers.
Thanks for watching. 1aauto.com 888-844-3393
For anyone who looks at this and has their engine cover still on the engine, twist the oil cap tube counter clockwise, and pull the front side up and the back under (It hooks onto a bracket)
i love yalls videos man yall trully take the viewers step by step and very detailed please continue to keep this up!!!
+Jesusloves Uall Thanks for watching. If any of our viewers needs to make this repair, we carry the replacement intake manifold shown in this video on our website. Here's a link to them www.1aauto.com/1A/IntakeManifolds/Buick/LeSabre/1AEIM00008?TH-cam&CTA%20Comment&ATony
My manifold cracked with a loud pop on start up yesterday. This video made replacing it so much easier. Thank you.
since My L.I.M. gasket's were failing because of the orange dexcool Product..99 buick lesabre custom series 2 engine. non supercharged..I did it all myself & Put the result's & tips on you tube for other's.. great video guy's..
Dexcool doesn't cause gasket failure. Not changing your antifreeze does. I've never heard of gaskets failing unless the coolant was neglected.
That is how you do a how-to repair video. No B.S. Simple to the point step by step. I do not even have this car, I was looking into one and heard the Intake gasket is a common issue and wanted to see how much of a job it is to do If I got the car and had the problem.
+John Norris Thank you! We love empowering our customers and showing how to perform DIY auto repairs with our high-quality auto parts. 1aau.to/m/Shop-1AAuto-c
Outstanding video. Thanks you so much!
Did this yesterday and today. It took a bit longer than 17 minutes. Just take your time and go slow, it's not that bad. The most difficult parts are removing and reinstalling the fuel rails, and getting that bendable bracket to line up. For some reason the bracket has an on-size screw hole, when it could have been made oversize. You might want to drill it out a bit and paint the bare metal right after removing the throttle body to make attaching it to the throttle body easier.
+Stephen H Thanks for the tip and feedback!
Good suggestion but unfortunately we won't. We'll do one on the next Gen 2 3800 we have....Thanks!
I have the exact same car head gasket was replaced by Buick my water pump was leaking I replace that hopefully you guys did not put Dex Cool back in there it will eat the gasket that's why the gaskets crack I put Prestone good video hopefully mine will last for a while my brother in law had a 2003 Monte Carlo 3 8 litre his gasket went to it was a pretty big job you guys make it look so simple good video like I said thank you
I agree. I have a 2000 Buick Regal LS with a 3 8 litre and I had flush my radiator and I didn't go back with Del Cool. I put Prestone Extended Life and bled the coolant and it's also put out heat better and don't looks like mud like Del Cool does
Yes you are correct, our car was missing the engine cover.
GM should just buy all these cars back like VW did its diesel cars...this is a major defect all across many models and engines...will this gasket defect cause oil to leak as well ??
I agree. I am having mine done for the third time sense I bought the car. I have only owned my 04 Pontiac Bonneville for 5 years!!
Plastic part that fails, and they are replacing it with plastic again?
I am pretty sure that there are aluminum ones for sale for $250 or so? it sucks and is twice as much but if you keep having problems with the plastic it might be worth it.
Or least not charge for the new parts
@@blakeolhausen5383 There are no aluminum intake manifolds for the upper intake. The series 3 motor used aluminum for the intake plenum but it is not directly compatible for the series 2 engine without some minor modifications.
Great job! One thing, no fender skirt protectors. No buckles no zippers no need but pro's do.
Hey 1A my mechanice jus quoted me 1100 for the fix..but they are only changing the upper n lower gaskets! No new plenum jus gaskets for lower and the old plenum..I thought for sure they would give me a new plenum with that being the main cause of collant and oil leaks correct? Thank you great video!
Do you have the bolt removed from the throttle body at 2 mins? Size and threads?
Im mid process on this right now. I purchased just the gasket. Clearly you recommend replacing it all but should I really worry about it? Also; what indicates that the lower is bad? There's so much coolant and oil all over my block it's truly hard to tell what's what.
coolant all over the block and in the oil = lower intake gasket is bad...... you answered your own question.
.
and yes.... spend the extra 20 bucks and replace all the gaskets.... coolant elbow O rings, injector O rings, thermostat gaskets
.
the upper intake gasket CAN be resued if its still soft and isnt messed up
but its like 10 bucks for a new one....... and peace of mind is worth millions
Thanks! I replaced the lower as well :)
Thanks for watching
1aauto.com 888-844-3393
how did you clean the lower one?
Stanley Hill hello stanley was the bottom one hard to get to the top looks like a cake walk im trying to get my buick back on the road with out taking it to the shop i love youtube and i love watching 1a auto vids
@@1AAuto - Hello, can I use this procedure for the 2005 3.8 Impala as well? They look like similar engines.
Would I have to drain the radiator before removing the intake? Also, after you removed the intake, is there no coolant inside of it before removal? Or did you drain the block before hand?
+Pin Circle You may have to drain the fluid level down a little bit to prevent it from leaking out. If any of our viewers needs to make this repair we carry the replacement part shown in this video on our website, here's a link to them. www.1aauto.com/1A/IntakeManifolds/Buick/LeSabre/1AEIM00008?TH-cam&CTA%20Comment&ATony
Thanks for the video guys! I just did this step by step and im back on the road! Tks!!!!! Sending giod karma your way
+Gingerholic31 Thanks for watching! If any other viewers need the parts shown in this video please click the link: www.1aauto.com/1A/IntakeManifolds/Buick/LeSabre/1AEIM00008?TH-cam&CTA+Comment&AcX5MWk
you guys are awesome !!!!!! THaNks !!
+Mark McQuiston No problem. Thank you for watching. 1aauto.com 866-403-3393
1A Auto Parts quick question I got one of those two Oldsmobiles how do I remove the engine out of those do I have to drop it through the bottom or through the top
ChevyCobalt Racer I have a buick regal and when I give it gas at any range it bucks. could it be the trans or this air leak that is caused by the bad intake?
Could be vacuum leak
Hi, I have a question. I recently had my 2002 Buick Lesabre overheat. I replaced the plastic tube that runs off the tensioner. now i am getting the number 1 cylinder check engine light coming on. I replaced the spark plug, wire and coil but it continues. I did a pressure test on a few cylinder and the number 1 cylinder has only 75 psi, could the upper intake cause a loss in pressure
If it's a cylinder 1 misfire code, you may have a bad ignition coil on that cylinder. You could try to swap it with one of the other ignition coils to see if the misfire code moves. We carry new ignition coils for your 2002 Buick Lesabre on our website, with free shipping in the lower 48 states. Here's a link to them. Hope this helps you out. www.1aauto.com/2002-buick-lesabre-ignition-coils/y-mo-c/2002-141-109?TH-cam&TH-cam&ATony
Sometimes you can hear it if you hit the throttle a couple of times.
Hey i just took off my intake manifold and it was full of oil and coolant i thought it was a blown head gasket should i just clean it up and then bolt on a new intake
you should take it to a shop..... as you probably dont have the skills
@@kainhallskills to what put it back in cause he said he removed it himself or did you mean to asses the problem lol
These car companies and their plastic parts lol....this is similar to the way the older saturns always develop a crack in the upper radiator because it's plastic. I have an 02' Lesabre and I'm putting an aluminum manifold in mine screw putting another plastic one on, if your gonna do something you might as well do it right is my motto.
Everything i needed to know thanks
This video shows one way to make this repair and nothing wrong with it. I do this job a different way but end results are the same just slightly different procedure and time to do is about same as in this video.
It's always good to know a couple different ways to attack a problem, how do you do this procedure? We appreciate your input! 1aauto.com 866-403-3393
Service manual says 89 inch pound . Does not say go in passes. Just in sequence
will the intake manifold gasket let water in the motor
take note of how far the injectors go in lower manifold , i changed intake on 93 bonny but injectors did not seem far enough down cuz of higher mount base on new manifold , had to grind off sixteenth for perfect
+zuko 57 Thanks for the feedback!
That is the upper plenum. Intake manifold is below it.
This thing cracking on 3.1 3.4 and 3.8l is so common it probably warrants a recall, there's a aftermarket kit that is supposed to be better than OEM? There were some that were metal or a aftermarket metal plenum but I have never seen one.
Thank you for watching!
888-844-3393
Certainly have known a few folks that had this happen and more than once to these plastic intakes on GM products.
Right beacuse..there replacing it with another upper plastic one! Dont make sence!
How about showing how to remove the tricky wire connectors and more on removing the fuel rail, tat part went way to fast. thanks
Is this a permanent fix for the fire risk from the plastic manifold intake gasket or does the problem come back again?
Thank you very much for the video, it is excellent.
+Heehaw Jones Thank you for your positive feedback!
why plastic in the first place?
will the upper leak outside onto the valve covers if theyre going bad? i seem to get water deposits in the crevices
I'd like to know this as well
1a auto
you have a video how to get fuel injectors out i search and couldnt find one
do I have to drain the coolant first or can I just go ahead and replace it as is?
What symptoms would i be experiencing on my 2001 Buick LeSabre Limited (with high miles) if i needed to replace this manifold gasket? My buick starts just find but lots of smoke - puffy smoke and a milky substance inside the filler cap? HELP!!!! what should i do to confirm that i might have head gaskets blown. I don't want to run the car and ruin it any more.
If you're going to do all this you might as well do the Lower intake manifold gasket
What does the 4 plugs (the wiring harness) on the back of the engine go to?
thank you for video 1Auto but it seem like alot to take off to get to manifold gasket I dont wont to mess up do it my self for first time if my wifi was to reach from were I park my car I do it my self but I'm not remember all these steps so I'm let my mechanic do it but he give me a family discount thank god🙏
can anybody tellme what the little plastic tube that looks like a staw inside the manifold do or connect to?
what
A little late but incase anyone else sees this and needs to know the straw looking thing goes into a hole on the left side(passenger side) of the upper intake plenum. It goes into the part of the intake where the pcv is housed. I have no idea why they dont come installed into that hole when you buy the intake but just remove the gasket face the straw looking tube up into the hole and stab it in while reinstalling the gasket onto the intake.
do you have to drain the coolant to change the upper intake?
should there be coolant in the upper intake?
yes or no on the coolant?
Carl Johnson
No this repair will fix that.
I did this repair on my 97 lesabre also including lower gasket and probably watched this video a year ago before I attempted the repair. Immediately after putting it back together I got a throttle position sensor fault code. Replaced it hoping it had just went bad but code still exists. Now I'm getting a map sensor fault. Maybe 2 hours of running since repair. Any idea what the problem is? I suspect the Dorman intake plenum insert was not up to par. I was aware it didn't fit as snug as I'd have liked before installing but thought it would be efficient. Not in not so sure. Would that cause my engine fault codes?
+Aaron M We wouldn't be able to diagnose an issue like that here, you may want to have a local mechanic take a look at it. Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c
Thanks for share your knowledge.
My 97 lesabre has a weird hose that’s connected with clips to the upper gasket and it doesn’t look like it goes anywhere, not sure what to do with it.
fuel regulator hose or , can you hear vacuum leak ?
Its not called a mass flow sensor its called a throttle Body where the mass flow sensor bolts onto
I guess with no issues, it should take a maximum of 1 hour to replace the intake but my park Avenue has such a big front end, how can you reach the injectors without just laying on the engine ? It seems easy enough, just dont drop any bolts....
Does anyone know how long this job usually takes
About an hour to an hour and 15 min
Would have taken me about an hour and a half to do what was done in this video. The cleaning of my disgusting block and replacing o-rings on my injectors took another 4 hours though.
The guy in the video did it in 17 minutes.
@@anthonyguay2556 My shop in town wants 5 hours of labor for a upper intake replacement and LIM gasket replacement.
I don't get the difference between the upper and lower intake. I have a buick 2000 lesabre. My mechanic said I need a whole new intake. And I noticed I'm going through a lot of coolant. don't see any other problems. Is the upper intake only related to losing coolant?
+SirTalksALot01 Well, intake manifolds are often associated with the loss of coolant. It's likely the gaskets which are shot, but it's possible that the manifold itself needs replacing. You could do a little research on intake manifolds and coolant leaks, or maybe just ask your mechanic for clarification. It's hard to say what your problem is without actually being able to see it. Hope this helps you out. 1aauto.com?TH-cam&CTA%20Comment&ATony 866-403-3393
Hi - this is a great video and I am using it to disassemble and re-assemble. However, I am having trouble finding a torque wrench that will do inch pounds with the accuracy that you mention in the video. Can you provide the brand and part number for this?
HI Ray, You could try either Harbor Freight online, or the Craftsman section over at Sears. Hope this helps you out. 1aauto.com 888-844-3393
where does that tube go thats inside the intake? should it be free in there or where it bends up should it go into that hole? idk if that makes sense
+TONELOWthaWRITER Can you tell at what time in the video the tube is shown? 1aauto.com
Our Buick is now going thru this surgery as I type...
Where does the o ring go when putting it back together
Luv the video thanks
Could I replace the plastic 3800 Series 2 cover with a metal Series 3 cover? Are they interchangeable? I suspect they changed it to a metal one in the series 3 to prevent this warpage and leaking anyways...
+Ranger Rick Not sure if they're interchangeable actually. If you have one laying around, it'd be a cool experiment to try out. Let us know what you find! Thanks for watching. For anyone else who might be doing this job, we carry the parts shown in the video on our website. Order from us and we'll cover the shipping. Here's a link: www.1aauto.com/1A/IntakeManifolds/Buick/LeSabre/1AEIM00008?TH-cam&CTA%20Comment&ATony
1a we want a metal replacement..not another plastic!
Thank you for the video but I’m wondering how to decide if it’s the intake or the head gasket. My daughter’s park avenue is definitely leaking from either the intake or the head. The coolant in the radiator is sludge but the engine oil is good. I am leaning towards the head gasket what is your opinion?
100% the intake. Head gaskets very rarely fail on the 3800. It can happen but is extremely rare.
Yes it's the in take gasket
I changed my intake and now I have suction from the crankcase. Removing the oil cap and air gets sucked onto the crankcase. What caused this to happened?
You have to change the PCV and be sure o-ring is in tack
I love this video
Thanks for checking us out. 1aauto.com +Darryl Horton
You welcome. Keep up with the good work and keep showing these video. Thank you 1aauto.com
What happened to the lower gasket
My upper plenum was aluminum or like a cast iron, not sure, but it was not plastic. For some reason I can not find the right gasket for the plenum.....have any idea where I can find a gasket for it. So far I have gotten the wrong gaskets, that are ok for any thing 95 and up but not 94 and under to 92.......Help.!!!.........Bobby
What is the year, make model and engine size for your vehicle. We can see if we have the correct one for your vehicle.
Can one upgrade to an aluminum plenum, like the Series III has?
Yes but there needs to be adjustments to the airbox.
My Buick is puddling coolant on the top front of the intake a little and I have to add apint or so every few weeks. Is this plastic manifold the problem and will this fix it? There is no sign of coolant in the oil.
+Marty McGill Thank you for watching. The plastic intake could be the issue you are experiencing, but there are other pieces which may also be the cause. We recommend having it diagnosed at a local shop to ensure the correct repair is performed the first time. 1aauto.com
Thanks for the reply. I'm near positive the coolant is coming from the upper intake and pooling in front of the intake close to the thermostat side. There is no coolant in the oil though. Also, the specs I found call for 89 inch pounds. Is this enough or should I go with 96? Thank you guys for your informative and professional videos.
I went ahead and did the lower gaskets, a new plenum, new o-rings on the coolant elbow. Just buttoned it up and all is well. Thanks again for your videos.
You have to drain the coolant to do this?
No, I didnt drain my coolant before doing this and didnt have any problems.
If your reservoir has oil, save the coolant, put some pennies water and detergent in and shake it clean.
So the map sensor clip pops out?
great vid thanks!
+paul Thanks for watching. If any of our viewers needs to make this repair, we carry the auto repair part shown in this video on our website. Here is a link to them www.1aauto.com/1A/IntakeManifolds/Buick/LeSabre/1AEIM00008?TH-cam&CTA+Comment&AcX5MWk
Great video to bad I don't have the money or know how to work on this myself!
+James Williams Thanks for checking us out! 1AAuto.com
Is it supposed to leak when I take off the mass airflow lol
I would never vote cook for a❤ Kamala
Thanks! Can the upper intake manifold cause oil leak or loss of oil?
The lower intake ones do
the upper has no oil or water going threw it.... so no
.
its probably your valve cover gaskets
Okay so I got into a wreck and blew my radiator I have now replaced it but I had to drive my car (04 Buick lasabre) home about 30 miles got the radiator replaced now it runs really badly along with it puffing white smoke for a min or so after starting there is water in the intake so I asuume its the intake manifold any advice to why its running so badly and the white smoke
@1A Auto Parts
+Sean Conroy Since your vehicle was in a front end collision there could be multiple reasons you are experiencing this issue. I recommend you have a certified mechanic inspect your vehicle for additional damage.
Where does the vacuum line connect to on the side of the pcv hose?
On the intake
Are all of them bad?
Sometimes all you need is a gasket, you don't need a new. Manifold
Im getting told my bottom one is bad in my buick park ave 3800 with supercharger then my friends telling me the bottom one never really goes bad unless i have a crack in it or something
Is there a video on a 97 Buick Regal supercharged?
+AirGunGodz Thank you for watching. Unfortunately, we do not have a video for the supercharged model. We will keep this in mind for future repairs. www.1AAuto.com?TH-cam&CTA%20Comment& 866-403-3393
I had oil in the pockets of my upper intake..what does that mean?
valve cover is leaking
what would this repair cost me 2003 Buick lesabre
A local garage where I live charges around $750 to replace both upper and lower intake gaskets.
What will I need to do if my head gasket is blown? like it smokes from there.
+semaarairsoft123 Unfortunately, we don't have a video on replacing the head gasket for this vehicle. That's a particularly large job on most vehicles though, so if you're a beginner in auto-mechanics, or you don't have a well experienced mechanic friend to help you along, you might reconsider trying to do it yourself. We typically won't discourage people from doing their own work, but it's important that you know the scope of any job before starting on it. This is a pretty good article to read through to give you a little info regarding blown head gaskets on these motors. Thanks for commenting!
troubleshootmyvehicle.com/gm/3.8L/how-to-test-a-blown-head-gasket-1
Hey, thanks! strongly appreciated.
You're welcome! Thanks for checking us out :)
Should there be oil ontop of the upper intake?
+Sloth Bear If there is an an oil leak in or around that area, you may want to replace any gaskets that the oil is leaking from. Hope this helps you out. 1aauto.com
If it’s a 3.8 it is the valve/rocker arm cover that is leaking the oil just replace them when u have everything else apart
Why not change just the gasket.
Of course this is NOT the intake manifold they are replacing but the plenum gasket which is above the actual INTAKE manifold gaskets... wrong title
did the car have the cel on?
Thank you for watching! This particular vehicle did not although they will often cause a CEL.
1aauto.com 888-844-3393
So my ? Is do u think my bottom one is bad top one is plastic
That number two coil is labeled wrong😏
Are you replacing it with another plastic manifold???
+Eric Maeder Yes, our parts are same to the same specifications that originally came on the vehicle from the factory.
@@1AAuto thats great..but wont that same oem part fail again...do u carry a alumium replacement?
@@edubb2491 There are no aluminum replacements. There are only plastic intakes for this engine.. you're thinking of the series 3 aluminum plenum, which is not interchangeable with the series 2 plenum without some modifications.
@@bobvance- iam confused..if its the same oem..it will fail again..they make a better quality aftermarket kit for this?
Video is very poor. Focus should zoom in to the elbow to actual tools and components.
make sure you clean that throttle body as it will help make engine run smoother
Great tip! Always a good idea to keep your parts clean for optimal operation. 1aauto.com 866-403-3393
This is a video to replace the intake gasket, idiot. Go watch another video of you want to tell someone to clean a TB
Get the name of the parts right
GM engineering at its finest - zip ties
Plastic?
+truthaboveagenda Yes the part is plastic. It can be viewed and purchased here: www.1aauto.com/1A/IntakeManifolds/Buick/LeSabre/1AEIM00008?TH-cam&CTA+Comment&AcX5MWk