Head and head gasket removal on a 2002 Cadillac Deville DHS 4.6L Northstar - without lifting the engine from the top or removing it from the bottom. I did t...The 2011 Cadillac DTS has 2 problems reported for oil leak. Average repair cost is $4,000 at 70,950 miles. ... Cadillac DTSs and Northstar engines. $500.00 for a 4.6 Northstar with 30 day warranty ...1 post · Joined 2015. #9 · Dec 12, 2015 (Edited by Moderator) One of the metal coolant tubes on back side of engine is locked into a threaded fitting, It's kind of like fuel filter quick disconnect and it is plastic. These will leak down the back side an pool up on the transmission and burn off.Once sparse, Nigeria's payments space now seems muddled Three years ago, whenever Larry Eghosa, a Lagos-based sound engineer, tried to pay for products online it was always a craps...Cadillac Seville STS Northstar 4.6l from 1993. (run around 170.000km) Problem: It all started with Traction Control Disabled When starting and driving the car it always showed traction control disabled. Since a few weeks I had some serious problems starting the car. Tried a few times, you could only hear a few clicks from the starter motor (I ...Ask Your Own Cadillac Question. Please confirm if you have seen repeated problems with the value system on the Northstar engines, such as broken or bent exhaust or intake values. And if the GM has covered any of the expenses involved with the repairs. Cadillac Mechanic: Chad Farhat. yes i have seen it a lot.If a problem is found, repair as necessary. Was a problem found? — Go to Step 24: Go to Step 17: 17 : Check ignition coils for cracks or carbon tracking. If a problem is found, repair as necessary. Was a problem found? — Go to Step 24: Go to Step 18: 18 : Using a Scan Tool, monitor TP angle with the engine idling.Aug 31, 2023 · A prevalent issue with the Cadillac DTS Northstar engine is its oil consumption. Several factors can lead to excessive oil usage, with oil leaks being a common occurrence even in well-maintained engines. The primary culprit behind the engine’s oil consumption is the premature wear of piston rings.Worst Cadillac XLR Engine Problems #1: Oil Leak 2006 XLR Average Cost to Fix: $6,000 Average Mileage: 28,000 mi. Learn More #2: Service Engine Light Is On 2006 XLR Average Cost to Fix: N/A Average ...Engine and Performance Issues. The Cadillac XLR is equipped with a 4.6-liter Northstar V8 engine that generates 320 hp and 310 lb-ft of torque.. Despite its impressive output, the XLR's V8 engine has had common problems, some of which include: Carbon Buildup: This affects your engine's performance, causing poor acceleration and fuel efficiency. Water Pump Failure: A malfunctioning water ...I bought my 94 SLS Northstar 11 months ago with 65k on it. It had a subtle miss at idle. Sometimes slow to start (not exactly hard starting). I did everything I could think of, then, took it to a trusted shop. Their scope showed everything just fine, but they changed the lugs anyway. It ran pretty well for a few days and started missing again.Northstar engine. Rebuilt, (time sert) new headgaskets, new alternator etc, the works..Car ran great for a few years. Here´s what going on since last couple of weeks: Problem: At idle it goes up and down 800-1500 rpms. misses and chugs, comes down to 800, revs up again, misses chugs etc etc….May 11, 2021. #1. My 2019 Ram 1500 with 5.7 with approximately 48k miles developed a ticking noise. It sounded like a exhaust leak, but as the engine heated up, it went away. The noise was quite loud. I thought it was an exhaust leak on the exhaust manifolds. Well I took it to the dealer and the tech thought the same thing.Northstar and GM Engine Experts since 2008 We have the best parts in the world for these Northstars. Hands down. If you want the best, you came to the right place. Head Stud Kits - Performance Tuning - Upgrades - Repairs Cadillac DTS - Cadillac Eldorado - Cadillac STS - Bonneville GXP - Oldsmobile Aurora - Buick Lucerne & MoreThe early-to-'04 Northstar suffers from an open deck design with minimal sustained clamping force which is certain head gasket disaster over time. A composite fabric/graphite gasket without s/s cylinder seal rings cannot be expected to hold up under the expansion/contraction of engine parts, and when coupled with proven defects in machining and ...The Northstar engine range featured an aluminum block with four valves per cylinder, and first debuted in the 1993 Cadillac Allante roadster and the Cadillac Eldorado. ... The central problem with ...Oct 19, 2015 · Please read the non-scientific poll on Northstar engine/gasket failures in the stickies in Engines; Northstar. Stickies, marked with a push pin, are necessary, timeless info in any forum of interest. 1997 - 1998 - 1999 had block metallurgy troubles, 2000 had head bolt thread length problems.How to Fix a Bad Gas Cap. Inspect the gas cap for tightness, ratcheting, and breaking, tearing, or missing pieces on the gasket. Replace the gas cap if it is defective. 2. Camshaft Actuator Solenoid Valve Failure. Camshaft actuators at the front of the V6 engine.Oil loss is one of the most significant defects of Northstar engines. You can avoid them from 2000 to 2005 because they consume excessive oil according to their condition and performance. In such circumstances, the oil consumption increases, and piston damage. The broken pistons do not allow the mixing of fuel with air.The early-to-'04 Northstar suffers from an open deck design with minimal sustained clamping force which is certain head gasket disaster over time. A composite fabric/graphite gasket without s/s cylinder seal rings cannot be expected to hold up under the expansion/contraction of engine parts, and when coupled with proven defects in machining and ...ben.gators. 5855 posts · Joined 2009. #2 · Dec 9, 2009. Hi, As I know this syndrome was common in 98, 99 N*, and finally Cadillac has come up with some modifications, and they updated N*, and I guess you have the modified engine on your 2002 eldo. Like.The 32-valve design of the Northstar's engine head gives it a serious advantage when it comes to upper rpm breathing as compared to a more traditional 16-valve pushrod motor. In fact, the factory lifters are good for 8,500 rpm, but in order to get there safely you're going to have to swap in a set of stronger valve springs.Top 2005 Pontiac Bonneville Problems. Engine Stalling Due to Mass Air Flow/Crankshaft Position Sensor Failure. 149 people have reported this. 44. Mode/Temperature Door Actuators May Fail. 146 people have reported this. 61. Car Won't Start Because of Anti-Theft System That Uses Raised-Chip Key. 101 people have reported this.The 3.5 would reportedly have been expanded to 3.7 L for the Intrigue and Grand Prix, however despite higher performance Pontiac owners reportedly expressed dismay at the prospect of a "smaller" engine than the 3800, and with Oldsmobile going away and the Global V6 coming there was nowhere to use it. Quote.Aug 29, 2023 · Starter Motor Problems. The starter motor on the Northstar engine is located inside the engine, which is a unique design. This location can cause the starter motor to get hot and fail. Replacing the starter motor can be a labor-intensive job, but it is necessary if the starter motor fails. 12.85,605 miles. The contact owns a 2006 Cadillac Dts. The contact stated that engine oil leaked into the exhaust system and caused the exhaust to smoke. The dealer advised the contact that the oil ...I have a 2005 STS 4.6L Northstar....Let me start by saying I first bought car with 89,xxx miles on it. Have done regular fluid changes and thats about it....Fast forward to now about 137,xxx miles. Driving and then all of a sudden check engine light comes on. I hook scanner up says cylinder 5 misfire...At this time I realize I have never done ...We would like to show you a description here but the site won't allow us.758 posts · Joined 2011. #8 · Nov 26, 2012. 1) Find out were the oil is leaking from. Start at the top of the motor, Valve Cover Gaskets (the rear has been a problem for a long time).Bolts louse at the front cover and oil pan. A lot of the 06 -08 DTS, The motor is not level and tilts to the right, so you mite think its coming from the front seal.The Map sensor is very easy to replace. But before replacing it check for 5 volt reference on the 5volt ref circuit and a ground on the low ref circuit, check the resistance of the signal circuit between the PCM and sensor to make sure its not open. Without a scan tool your diagnosis becomes a little more difficult.The Shortstar uses much the same piston and ring package as the Northstar so it also benefits from "exercising" to keep the rings free in the piston grooves and free of carbon. Flog it regularly. That engine is extremely robust and enjoys one of the lowest warranty claims and problems/100 engines in the industry, period. You practically can't ...Coolant system problems have plagued the Northstar engine because of some design flaws that have never been corrected. Over time the steel head bolts and the threads in the aluminum block will begin to “stretch” and the head will seperate from the block, usually around 100,000 miles.Most Northstar dipsticks are badly marked. The motor takes 7 1/2 quarts with a filter. Put this amount in, no more. It will show below the upper mark, but at 7 1/2 quarts, it is full. When checking the oil, keep it at this level, not at the upper mark. If you top it up, you can get about an unneeded 1/2 quart in to get to top of dipstick mark.Dec 4, 2020 · Here are three steps you can take to increase your Northstar V8's power and performance. Valvetrain Upgrades. The 32-valve design of the Northstar's engine head gives it a serious advantage when it comes to upper rpm breathing as compared to a more traditional 16-valve pushrod motor.If there are, then there would be an internal engine problem, like a head gasket or head. Of course, you will want to make sure that the system is full, the coolant is circulating, and the cooling fan(s) are working as well as the pressure cap holding pressure. ... 2001 cadillac DTS,175,000 miles, Northstar engine overheats. have flushed engine2. Oil filter gasket itself. 3. Oil filter adapter O-rings/composite seal plate (depending on year) and (if fitted with V03) - oil cooler lines. 4. Tossup between cam cover seals and oil level sensor in the lower front of the pan. 5. Halfcase and oil pan formed silicone seals (not "gaskets") 6 Rear main bearing seal at the flexplate.After reading here and advice from others, I am worried about the gasket problems with the Northstar engine. Dealer offered a pretty much full package protection warranty for $2400 ( I negotiated this down about $300 ). This covered all gaskets, plus just about everything else on the car. I declined at time of sale, but I can buy it within 30 days.Northstar engineNorthstar engine diagram cadillac buildup rod question network hot Engine northstar diagram mount series cadillac replacement v8 2001 motor dohc cost focus ford problems deville 1996 everipedia detoxicrecenze wiki4.6 northstar 98 …Some known issues with the Ford 5.4-liter, three-valve V-8 engine include problems with the engine’s cam phasers that can lead to camshaft failure in high-mileage engines and durab...Well this must be a 2006 thing with the 4.6 Northstar because on the Cadillac forums the 4.6 engine is said to be far better from 2003 on up with much improved head bolt and intake/head gasket design.When disassembling the GM Northstar 4.6L engine, all head bolt threads should be thoroughly inspected as they are removed. If there is any section of the aluminum block thread left on the bolt, that bolt hole will need to be repaired using a Time Sert or equivalent repair procedure. Related Articles - Volvo Penta's D17Northstar Engines and System Technical Discussion. BEWARE OF SCAMMERS. Anyone trying to get your money should be checked out BEFORE you send anything anywhere. Northstar intake manifold. Tags ... We also had problems on some 3800's back in the 90's with exploding intakes. They issued a software update for the PCM to fix that concern though.Cadillac Northstar engine problems. A cornerstone of older Cadillac models, the Northstar engine was hailed for its cutting-edge technology, becoming synonymous with the Cadillac brand. However, the complexity of Northstar engines meant they quickly became notorious for head gasket failures. And with the 'Northstar Condition' affecting ...When disassembling the GM Northstar 4.6L engine, all head bolt threads should be thoroughly inspected as they are removed. If there is any section of the aluminum block thread left on the bolt, that bolt hole will need to be repaired using a Time Sert or equivalent repair procedure. Related Articles - Volvo Penta's D17The vehicle was taken to johnson motor company of Georgia Cadillac at (1122 walton way, augusta, ga 30901, (706) 955-1086) where it was diagnosed that the oil pan gasket and the seal needed to be ...I have a 2007 Lucerne CSX with V8 Northstar engine purchased new in 2007. Have never had an engine problem untill now. Have always had it serviced by Buick dealer at least every 3000 t0 3500 mles. This last time it was over 4000 miles and my service engine light came on saying to stop engine. I added half quart of oil, no more service enging ...There are two main causes for engine overheat: ⚠️ The coolant does not flow through the system like it should. These may be some of the causes: Not enough coolant: check the coolant level periodically. If the level is under the minimum level recommended, the engine may overheat because there is not enough coolant.This is a common problem after replacing the ISC where the PCM does not know where the idle point is in regard to the TPS. It must "relearn" the position. The trick to properly setting the ISC has to do with several factors. How the idle system works on the Northstar. This engine has a "base" or "minimum" idle speed adjustment screw.If you want to make sure your vehicle stays in good repair, you need to at least understand the basics of engine maintenance. After all, your car’s engine is the “driving” force th...5535 posts · Joined 2005. #1 · Feb 2, 2010. Alright guys I know for a fact that the 3.5L Shortstar engine was based off or derived from the Northstar engine. I'm also well aware that its a fantastic engine that was if I'm correct discontinued by GM but I wanted to know if any of you guys have had any experience with any of GM vehicles that ...electrical problems 1 NHTSA complaints: 2. suspension problems 1. windows / windshield problems 1 NHTSA complaints: 2. fuel system problems NHTSA: 8. brakes problems NHTSA: 7. engine problems ...This Northstar engine was designed originally for transverse front-wheel drive applications. It was modified substantially in 2004 for longitudinal rear- and all-wheel drive use in the STS, SRX, and XLR, as well as receiving continuously variable valve timing on both intake and exhaust sides. The RWD (LH2) Northstar produces 320 hp (239 kW) and 315 lb•ft (427 N•m). An increased compression ...Oct 30, 2010 · 756 posts · Joined 2003. #6 · Oct 31, 2010. The headgasket problem has been resolved as they went to a different deck design on the top of the block where the head meets the block. 1953 Cadillac Eldorado Convertible. 1954 Cadillac Coupe de Ville. 1993 Cadillac Fleetwood Brougham (Sold) 1996 Cadillac Fleetwood Brougham.Katshot. 6482 posts · Joined 2003. #4 · Sep 21, 2003. Bottom line: Cadillac says 1000 miles per quart is "normal" oil consumption for the Northstar, and therefore they will take no action to fix it. If the rate is higher than that, they will do the "de-carb" and as was said, it generally is less than effective.DESCRIPTION: Effective November 9, GM Parts will provide a remanufactured 4.6L Northstar Premium V8 Engine (RPO-L37/LD8). This engine will provide an viable alternative to repowering your customer's late-model Cadillacs. Available on Powertrain Wholesale Truckload Program. EFFECTIVE DATE: Available November 9, 2007. ORDER INPUT: Order via RAPID.The dealer is wanting $1800 to repair this and my car has only 58,000 miles on it. The 1998 Cadillac DeVille has 5 NHTSA complaints for the engine and engine cooling:engine at 52,200 miles average.The ignition coil is also known to fail from time to time; luckily, it's a relatively simple swap that shouldn't take too big a bite out of Your wallet. Some potential problems with the engine in a 2008 cadillac dts northstar are due to poor lubrication, inadequate fuel and air compression and aged spark plugs.Had this happen to two different cars and fixed by two different shops. One was $1800 for gaskets and helicoils, the second was $1700 for the block stud kit and gaskets. If you have a Northstar head gasket issue, then you take it to one of these locations for the SureGrip Cylinder Head Stud repair system (US PAT#8,740,532).dkozloski. 29672 posts · Joined 2004. #7 · Apr 14, 2009. Recalls originate with the NHTSA for safety issues. The only squawk that an owner would have with Cadillac is if they refused to fix it while it was still under warranty then it would be a civil dispute.Jan 18, 2022 · The 32 valve V8 Northstar was not an option - it was IT in one of two performance ranges - the ~275 hp 3.11 final drive economy cruiser version and the ~300 hp 3.71 final drive performance version. The 8th character of the VIN gives the powertrain - VIN Y is the cruiser, VIN 9 is the performance.Just lift it up and lay it sideways on top of the engine. Now you need to unbolt the EGR valve. To do this, you will need a ratchet with an extension, and a 10mm socket. Once you know the bolts are unscrewed all the way, don't try to remove them. Instead remove the whole EGR valve with the bolts still in the holes.The main engine problem reported for your mid-1990s Deville's was a crankshaft position sensor. Of course, you can also get powerful 6-cylinder engines in a Cadillac these days. ... I noticed an extreme oil leakage problem with Northstar engines of the year you mention. Sealing them up was in the 12hr range. Caddyman December 4, 2010, 1:53am ...Dec 4, 2020 · The 32-valve design of the Northstar's engine head gives it a serious advantage when it comes to upper rpm breathing as compared to a more traditional 16-valve pushrod motor. In fact, the factory lifters are good for 8,500 rpm, but in order to get there safely you're going to have to swap in a set of stronger valve springs.We would like to show you a description here but the site won't allow us.Cadillacboy. 4419 posts · Joined 2003. #9 · Nov 12, 2007. I think w/ a good maintenance it should last longer than 150 K miles . It's not about how fast you go,it's about how you go fast - Enzo Ferrari. If you can produce the best road cars in the world,no one ever will forget them-Ferruccio Lamborghini. Like.1G6ET12912B100942 2002 Cadillac Eldorado 4.6L Northstar Engine, Viv code #9 problem: --came in for oil leaks & coolant leaks --engine ran fine prior to service, no warning lights on prior to service - … read more2003 Cadillac DeVille Engine Problems. Find something helpful? Spread the word. 21.9k. Click on a problem below to read more. Oil Leaking 2. Crank Shaft Sensor Went Out 1. NHTSA: Engine 16. NHTSA ...Jun 1, 2010 · Northstar lineage can get a mite confusing. The Seville SLS model actually came with the RPO LD8 (VIN Y) Northstar. Rated at 275 hp and 300 lb-ft, it was designed to provide more low end than the ...Oct 16, 2016 ... Go to channel · The Northstar 4.6L Engine Problems. Powertrain Products Inc•8.5K views · 8:29 · Go to channel · Cadillac DTS Transmissi...Check for coolant flow at the Purge line,this is a common problem on the Northstar. There is a small diameter hose coming from near the top of the coolant tank,this is the purge line. With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.If the ...Check for coolant flow at the Purge line,this is a common problem on the Northstar. There is a small diameter hose coming from near the top of the coolant tank,this is the purge line. With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.If the ...Advertisement Three basic forces act on gliders: lift, gravity and drag (airplanes have a fourth force: thrust): Without an engine, a glider's first problem is getting off the grou...Some of these leaks like valve cover leaks can be fixed in a day and are relatively inexpensive. Others like oil pan or lower crankcase seals require extensive labor and can be more expensive, in the range of $2000-$2500 are common. These repair prices are only for a fraction of the seals on the engine. But at RB Auto Service we specialize in ...There are two main causes for engine overheat: ⚠️ The coolant does not flow through the system like it should. These may be some of the causes: Not enough coolant: check the coolant level periodically. If the level is under the minimum level recommended, the engine may overheat because there is not enough coolant.The Most Common Cadillac Northstar Engine Problems: Blown Head Gasket. Cost to fix: $1,000-$3,000. Main Seal Oil Leaks on the Rear. Cost to fix: $500-$1,500. Valve Cover Oil Leaks. Cost to fix: $200-$500. Excessive Oil Consumption. Cost to fix: $1,000-$5,000. Blown Head Gasket. Problem:The Northstar is a perfect example of an engine that was slightly over-engineered for its own good. It's finicky, high-maintenance and expensive to repair if anything breaks. Fortunately, its most common problems are easily dealt with -- and savvy buyers have been known to get great deals on engines sellers thought were toast, but were really ...Jun 11, 2010 · GM Northstar 4.6L V8 Engine. By Engine Builder. Published: Jun 11, 2010. Initially rated at 295 horsepower, the Northstar V8 has grown over the. years to an incredible 469 hp at 6,400 rpm (STS-V Supercharged. Northstar engine). In 1995, the engine was ranked as one of the “10 Best Engines in North America” by Ward’s Auto World.While the Northstar V8 is well engineered, like other engines they've had some problems. According to various sources, head gasket failures are not uncommon. Nor is oil burning or oil leaks.Step 6. Ask your assistant to turn the engine key to "start" for no longer than three seconds. Turn off the key. Do not touch the vehicle, but visually inspect the suspect coil pack when the engine turns. The coil pack is bad if it does not spark in the new position. The ignition control module is bad -- and will need a replacement -- if the ...5. Oil leaks. Promar Precision Engines have been pioneers in remanufacturing the 4.6 DOHC 32 Valve Cadillac Northstar Engines. We were one of the first remanufactures in the country to offer remanufactured 4.6 Northstar engines to the public, even before oversize pistons were available. We have made multiple …While the Northstar V8 is well engineered, like other engines they’ve had some problems. According to various sources,, 83883 posts · Joined 2006. #6 · Feb 18, 2014 (Edited) Let&#, If it's water/moisture condensation, that's most likely your prob, Submariner409. 83764 posts · Joined 2006. #19 · Sep 24, 2021. GM/Cadillac has a TSB (Technical Service Bulletin) out, Feb 1, 2019 · The first Northstar engine, RPO Code L37, was launched in th, Blue smoke does not mean blown head gasket... people automatically assume that oil leaks in a North, For those looking for the ultimate off-road machine, the Polaris Ranger Northstar is the perfect cho, Oct 19, 2015 · Please read the non-scien, Dec 9, 2009 · ben.gators. 5855 posts · Joined 2009. #, Jan 12, 2021 ... Hey man I changed my thermostat a, Head gasket/block sealer for 99 northstar engine. Have repla, I was wondering if the V8 Northstar engine 2005 and up mod, Northstar Engine Problems. Blown Head Gasket; Rear, The Northstar V8 engine family is General Motor's top-of-th, 2006 4.6 Northstar overheating. Hello everyone, I'm, 1996 Deville-Nothing 135k SOLD. 1997 ETC-HG Failure at 100,026. 1, 83868 posts · Joined 2006. #2 · Aug 8, 2016 (Edited) Th, Aug 29, 2023 · Starter Motor Problems. The starter motor on.