Correction ... aluminium upper intakes for 3800's. I have a '99 Buick LeSabre 3800 with the infamous intake coolant leak. Removing the spark plugs will allow the engine to turn over pushing the coolant out of the spark plug holes. 06 GTO 6.0L LS2 06 G6 GT 97 GTP. The rest is great. They also recommend replacement of t-stat with a 180 degree in lieu of the stock 195. Buying Request Hub makes it simple, with just a few steps: post a Buying Request and when it’s approved, suppliers on our site can quote. THE WATER IS PUMPING INTO THE UPPER INTAKE MANIFOLD AND OUT THE EXHAUST PIPE AND THROTTLE BODY. Save Share. 1995-1999 Olds Delta 88 Intake Manifold Upper V6 3.8L (excluding Supercharged Models) 1995-1999 Olds Delta 88-Royale Intake Manifold Upper V6 3.8L (excluding Supercharged Models) May 6, 2016 Brian F The upper intake manifold may develop an internal coolant leak causing one or more cylinders to fill with coolant. Dorman, ACDelco or ATP. loss of coolant, oil leaks, upper plenum to throttle body deterioration. The most common failures of the 3800 engine are spark plugs, wires, MAF sensors, ignition coils, plastic intake manifolds (NA engines only), and lower intake manifold (LIM) gaskets. Find the cheap 3800 Intake Manifold, Find the best 3800 Intake Manifold deals, Sourcing the right 3800 Intake Manifold supplier can be time-consuming and difficult. Compare prices & save money on Automotive Parts. This post discusses the … Similar Threads. 200 matches. Brand new intake manifold repair kits are in stock and ready for immediate shipping at discount … Many GM V6 engines of 1995-1999 had defective Upper Intake Manifold (UIM) gaskets (this is especially true for 3800 V6 engines). maybe a better question is, what do I look for to determine if my upper intake manifold needs to be replaced? Brand new intake manifold repair kits are in stock and ready for immediate shipping at discount … Inspect the inner diameter of the EGR passage for signs of material degradation. The intake manifold is the part that bolts to the engine's cylinder head, it is connected to the air-cleaner, on older vehicles the carburettor sits on-top of it. Compare prices & save money on Automotive Parts. Replacing the upper intake plenum and gasket is commonly required to correct this condition. Follow the upper intake manifold (upper plenum) removal instructions found in the Engine Unit Repair Section of the Service Information Manual. This is a common problem for the lower intake manifold in the l36 and l67 3800 motors. I'm looking for a full kit with everything I need to do both UIM and LIM. I have a question about upper intake manifold leak on the 3800 series 2 engine. 116 matches. To all owners of GM cars with 3800 series II engines built in the late '90s: keep an eye out for this problem. Average repair cost is $620 at 122,000 miles. New Dorman Replacement Intake Manifold Item# SKU 7031001 Part Brand: Dorman OE-Solutions Dorman Part Number: 615-180 Position: Upper Fits: Buick LeSabre 1996-2005 (Engine: 3800 … The term Buick 3800 can refer to a wide range of motors across many years. QR Code Link to This Post ... 3.8 series 2 metal intake manifold FITS ALL MODELS LISTED, ANY L36 MOTOR AND MORE Any v6 3.8 3800cc motor----BUICK----LaCrosse CX 2005-2009 vin 2 The Buick LeSabre 3800 engine intake manifolds (upper plenum) are prone to overheating, causing coolant (antifreeze) to leak leading to poor engine performance. This item Upper Intake Manifold w/Gasket for 95-05 Chevy Buick Olds 3800 3.8L V6 ATP Automotive Graywerks 106001 Engine Intake Manifold APDTY 726291 Intake Manifold Kit Includes Gaskets & PCV Valve (USA Made) (Improved Thicker Wall & EGR Design Prevents Any Future Leaks) Fits 1995-2005 GM 3.8L 3800 2nd Generation Engine The antifreeze/coolant (especially orange DEX-Cool) will deteriorate the gasket material over time. Car's current mileage is 137,xxx, the previous owner changed the UIM (ACDelco) back in 2014 (122,000 miles). Report 1994 Buick LeSabre 90,000 mi, How do the intake gaskets hold up on the 3800? Intake manifold leaking into the engine and no signs of it leaking to the oil? Lower intake manifold? Thinking about replacing the upper and lower intake manifold gaskets? I will check everything suggested here. GM 3800 Series II upper intake leak. Inexpensive repair kit for GM 3800 (GM 3.8 L) Lower Intake and Upper Plenum repair. Anatomy of a Lower Intake Manifold (LIM) gasket fail: causes and symptoms. Small tube in upper intake manifold of GM 3800 Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Small tube in upper intake manifold of GM 3800 This topic contains 6 replies, has 4 voices, and was last updated by EricTheCarGuy 8 years, 3 months ago . In some cases it is only necessary to replace what is known as the upper intake and lower intake manifold gaskets. The car has run well since. 3. Upper intake manifold composite material may degrade around the EGR stove pipe and could result in an internal or external coolant leak. Here is an interesting link to a conversion from using the infamous composite upper intake manifold (plenum) found on the SII 3800 engine to the newer redesigned aluminum upper intake manifold used on the Series III 3800 engine. If degradation of upper intake manifold composite material is found, replace the lower and upper intake manifolds with the following part numbers: ^ Lower Intake ­ 24508923 ^ Upper Intake ­ 17113136 (includes necessary upper intake plenum gaskets) ^ Lower Intake Gasket ­ 12537197 4. BernardL: What can cause coolant to sit on top of the lower intake 3800 series ii engine. Edited July 27, 2018 by ski.dive (see edit history) IMO the only bad thing with the 3800 is the plastic upper intake. Choose top quality brands AC Delco, APA/URO Parts, API, ATP, Brock, DIY Solutions, Dorman, Replacement, SKP. The Chevy Impala 3800 engine intake manifolds (upper plenum) are prone to overheating, causing coolant (antifreeze) to leak leading to poor engine performance. The difficulty of an intake manifold repair can range from vehicle to vehicle, and it will most likely be a very time consuming task. I did replace the upper intake manifold and still coolant is mixing with the engine oil. ($14.95 - $287.16) Find great deals on the latest styles of Buick 3800 intake manifold. The intake manifold is in two peices; upper and lower, the idle air control in attached to the lower. INTERNAL LEAK!! Perfect for your next build. I do not snug major gaskets like head and intake manifold gaskets because it isn't worth risking. Park Avenue Car Forums ... and the same thing with the plastic upper intake manifold( with new main seal on the upper as well to be sure). The upper intake manifold and gaskets were replaced by a Buick dealer. Is that a weak point like on the 60 degree V6 engines? ... Everything else doesnt matter on a 3800, snug em down and go. ($15.39 - $915.50) Find great deals on the latest styles of Gm 3800 intake manifold. Buy a 2000 Chevrolet Impala Intake Manifold at discount prices. The lower gaskets were not replaced. The symptoms only started yesterday afternoon so it's still early. Does the Reatta Gen.1 3800, have an Upper and Lower intake manifold gasket, or just one intake manifold gasket? 3800 series 2 3.8 upper intake manifold - $1 condition: like new delivery available make / manufacturer: OEM model name / number: Intake Manifold. ZZPerformance's L36 Upper Intake for Series II and III 3800 connects between the lower intake manifold and the upper intake plenum. The dex cool coolant should not be used in my opinion on an l36, go back to the green. 3800 series 2 won't start after lower intake manifold gasket repair. ! Buy, Sell, and Trade your Firearms and Gear. I have the receipt. This article will focus on what is commonly known as the GM 3800 Series 1, Series 2, and Series 3. I'm really familiar with the engine, but I have been doing alot of reading lately to figure out whats the symptoms of a leaking intake manifold. The 1997 Buick LeSabre has 5 problems reported for intake manifold gasket failure. It is common for the upper intake manifold to break in these engines. This can cause the engine to "hydro-lock" and not turn over. IT PUTS THE MOTOR INTO HYDROLIC LOCK IN 2 MINUTES. installation of lower intake gaskets, upper plenum replacement at the same time. If there is a lower manifold it means there is an upper one as well? I had oil in the coolant when the intake broke. Going cross-eyed searching. Which brand of manifold should I get? You not flushing the coolant could also be the problem because coolant can become incredibly corrosive. My 97 PA has some coolant leakage near the upper manifold, right above the thermostat area. Typically, the air intake, throttle body, mass air flow sensor, fuel injectors, and spark plug wires will all need to be disconnected and removed. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Reply.