Alloytec engine problems. No internal parts though. It is like it has a bad stutter as it can repeat from 3 times in a row upto 9 times in a row. 6 litre V6 (HFV6) and 4L60E for a friend and have got good results but have a few questions. I've got a VZ Commodore Executive Alloytec V6. CEL Intermittent stalling in the RA Rodeo with a 3. You need to start checking basics – diagnose the problem rather than keep wasting money taking guesses. If it was country or freeway driving and a full synth oil used I might consider it. 6L Alloytec LY7 LE0 LLT V6 Commodo | revhigh PCV Valve for 3. 6L Alloytec V6 (190kw). If you are shopping for a new Ford truck, you’ll want to read over this list of 2021-2026 Ford F-150 known problems. I have had contact with several people from Australia and that is how I found out that the same engine in my CTS is also used in the Holden Commodore. Pump is ok. Dubbed the Alloytec, available in either 175kW or 190kW formats. Hi there, I noted a post you made on The early Alloytec engines suffer from timing chain problems which is expensive to rectify. Intermittent stalling in the RA Rodeo with a 3. When the chain stretches, engine timing drifts out of specification, triggering a cascade of performance and reliability issues. What is the easiest way to remove & replace my alloytec engine in my Vz , I have removed heaps of Commodore engines Vl Vr Vs VT Vx Vu , I only need to remove & replace the V6 Alloytec Engine , I have a 2 ton engine crane & stands good work shop , whats is the best way to do this just unbolt Hi guys Long story short I crashed my VZ V6 Auto but my running gear only has 40,000ks on it, buying another VZ exact same model in immaculate condition except for blown engine with high km's so going to put my running gear into it and wreck my VZ. Haltech ECU Options The Elite 2000 can be used without DBW, the Elite 2500 is required with DBW. old style engine real easy to work on and wont sludge up if you forget to service it for awhile. If engine continues shaking violently and hesitates when driving off (and requires progressively more and more revs just to try and stabilise the engine), the fuel pump is a strong suspect. Been at the mechanics for 2 months and they can't find the problem. ENGINE SPECIFICATIONS Alloytec and Alloytec 190 Configuration: 3. This is what I wrote, but the system limited me to 420 characters when contacting a forum member direct via the JC website. He asked me what years did they have problems with the timing chain on the Alloytec engine and was it sorted out Hi all, I bought a 2009 (MY10) VE SV6 with an LLT engine around 6 months ago, it has around 175000km. Sadly There is a 'rattle' in the front of the engine. It's now done over 180,000 km and is running quietly and smoothly, without any unwanted Hunting around trying to pick up my first Holden (will be my 2nd ever car) is it wise to avoid anything from 06-12 due to the alloytec engine or are there certain models with it that have it worked out? First published in the October 2004 issue of Street Machine Go to: Alloytec V6 in detail | History of the Holden six Holden released the new VZ Commodore with a brand new, high-tech, 3. 7 mm inverted tooth timing chains were introduced for the Alloytec V6 engines, replacing 9. The engine had a catastrophic failure and I couldn't be bothered to rebuild that engine for which I had bought a donor engine for it to put in. Hey everyone I’ve got my sv6 I’ve been trying to sort a missfire problem in cylinder 3 and 5 under load and idle it runs like 95% but as soon as you take out out an try drive it it’s will missfire an G'day all, I need a new engine for my 07 Ra Rodeo. Ive replaced both O2 Sensors and Oil Pressure Sensor Get all the gear from a 2006+ alloytec rodeo, use a 2007 LY7 from a VZ or VE, and a 2007 VZ engine loom. This is just a short list from what i know works if you have anything to add post up and i will add it. Stephens, group vice president, GM Powertrain, says is a vital initiative: to develop world-class engines with fully Having said that though, most engine management faults that cause a misfire or surge *should* be detected with your tool. Developed by GM Powertrain, the LE0 was part of General Motors’ High Feature V6 (HFV6) engine family; within General Motors’ ‘Regular Production Option’ (RPO) system, ‘LE0’ was the code for the reduced output HFV6 engine. It’s a Venturi valve. e BOOST) Information on the GM LY7 High Feature Alloytec V6 engine. I have a Rodeo with the 157 kw alloytec engine and it does a great job although its like any petrol commercial vehicle it likes to drink. The info online is vague for the SIDI reliability so any information on those engines and how they hold up would be appreciated. A quick 10-second way to easily see if your positive crankcase ventilation (PCV) system might have an issue or be restricted on your alloytec. 5-litre quad-cam had been flawed from the outset. Please help. Holden VE Series 1 are and were notorious for having Timing Chain Problems and is one of many common problems. Lifters HOW THE HELL DO YOU REMOVE THE ENGINE OIL PAN (SUMP) ON A VE ALLOYTEC ???????? I have removed all the bolts on sump, but it aint barging! Looks like it is wedged between timing cover and bell housing. and if you forget to service it every 5k or so you will be getting sludge inside . Ive done engine swaps on the Ecotec I,m along for the ride on this one but can someone tell me, is this a problem with the alloytec engine, what is causing the oil to turn to sludge? edit I've just googled it and all I can find is the alloytec turns sludgy if not serviced regularly. The Alloytec LY7 190kw engine is dead and how I’ve progressed to fixing this issue. After some time the car comes with a "Check Oil" light and continues to drive like normal. I thought fuel delivery Alloytec PCV cleaning Maintenance for HFV6 3. Like most most modern engines, the Alloytec V6 has been known for it's ability to turn oil into sludge. And no, I am not a qualified mechanic. 0 litre Gen IV V8 Engine #9679; General Engine overhaul Procedures #9679; Cooling Heating and Air Conditioning Systems #9679; Fuel and Exhaust Systems #9679; Engine Electrical Systems #9679; Emissions Engine Control Systems #9679 Introduction Manufactured in Port Melbourne, Australia, the Holden LE0 ‘Alloytec’ V6 engine was available from 2004 to 2010. The people who have driven both engines, what do you think is better in regards to fuel economy, smoothness, etc. 2 LP1 and Saab 2. 2 version of the Alloytec. It had the upgraded Alloytec engine and claims there's a way more noticable performance increase over the other one. Alloytec V6 engines: stretched timing chains In January 2006, 7. The lower-output LE0 and LY7 engines Son in-law has a 2008 Calais with Allotec. Back story is that over a few months the engine seemed to be loosing power/torque steadily but oil The 2005 model year saw the Isuzu V6 engine replaced by a Holden-sourced 3. The Rusteze Thread Jul 1, 2025 alloytecv6 engine swap starting problem vz sv6 And how often you will service the car. Ecotec , good power for a 6 . Just had a quick question - I've heard the alloytec engine can be prone to the infamous timing chain issue, but does it only affect cars manufactured within a certain time frame? Or can it affect potentially every alloyec Commodore. alloytec V6 any good: Just thinking to get a VF V6 but the other day seen a VE ute with oil all over the tailgate and blowing smoke and seen some with a lot of carbon build up in the exhaust i nearly fell over backwards at how much one dude down the road has, my 5. 0 litre 3. I renew oil and filter every 10000, is this enough, it's a daily driver done 98,000ks ex Govt. It's not only in Australia. Holden cancelled its LPG development program on the Alloytec engine in the Rodeo when it couldn’t make the valves and valve seats of the standard engine live long enough on gas. Troubleshooting #9679; Tune-up and Routine Maintenance #9679; 3. When this occurs, it can cause irrepairable damage to an engine. Starting/re-starting will also be progressively more difficult (leading terminal) as a fuel pump dies. 5 per cent in the switch. Hey guys, I apologise for the long post in advance! Just trying to give as much info as possible. The global V6 engine is the first V6 engine program to address what Thomas G. This isn't r/askamechanic But, this doesn't change the fact that telling OP to get their engine rebuilt instead of getting diagnosed is a great way for their money to be wasted. The pick up works ok. 6 litre V6 Alloytec Engine #9679; 6. Genuine PCV Valve Breather repair for VZ VE 3. In recent months, the Check Engine light has come on about once a Problem with my engine swap Hi everyone, I am having a bit of a problem with my engine swap that I have done. Developed by GM Powertrain, the LY7 was part of General Motors’ High Feature V6 (HFV6) engine family; within General Motors’ ‘Regular Production Option’ (RPO) system, ‘LY7’ was the code for the high output HFV6 engine. My Aussie friends might know this engine better as the DOHC 3. P0304 (Cylinder 4 - Misfire): Originally only happened once when I took off and went up to around 5k-6k rpm. Second hand information but i thought i'd share. 7L is The design of the valve is to remove the oil vapours in a measured way. My 2006 Captiva has a 3. Before you buy a car (or if you already own one!) with an Alloytec V6 engine (such as a VZ, VE or VF Commodore), watch this video! I will discuss the good the bad and the ugly issues facing Sep 22, 2019 · Chronic and very well publicised failings like timing chains, sludging, poor crankcase ventilation and complexity have given the engine a bad name. I have been tuning a holden VZ Commodore with the AlloyTec 3. Although I find the alloytec to be a smooth going engine. Dad's WM Caprice had a similar problem Decent VZ utes seem to be in ample supply compared to older VY/VU utes but the alloytec just makes me think it’s silly even considering getting a VZ over a VY/VU. Just had timing chain and guides replaced and now I have no oil pressure. Is that correct or are all the timing chains in these engines just shite? G'Day fellas, This is my first post so lets see how it goes. Released in the 2004 + Commodore, Here is Holden's Alloytec V6 in glorious technical detail. Is this diagnosis likely to be correct or is it possible that it's an O2 sensor? He doesn't know what the code My recently first built Alloytec LY7 190kw engine lost oil pressure and died on the side of the road, we think the issue is related to an underlying issue du Has anyone had any major problems with Alloytec's ? I bought mine at 60,000k (VE 06 Omega)& its just under 180,000 and seems as good as when i bought it ? Do any bolts which hold the auto transmission to the engine block end up in the water jacket of the engine block and one of them is corroded through and giving the passenger side leak? Is there any coolant evident at the drain hole under the bell housing? Is the head gasket failed, leaking without any loss of compression etc. Stephens, group vice president, GM Powertrain, says is a vital initiative: to develop world-class engines with fully contemporary features – such as dual overhead cams and variable valve timing – but […] Holden VE Commodore Alloytec Timing Chain Problems One of the most critical issues encountered in the VE Commodore, particularly in models equipped with the Alloytec V6 engine, is the premature wear of the timing chain. But it is by no means definite. . They also quoted him $1200 to replace it. The Ecotec is bulletproof, apart from the intake manifold gasket which is easy enough to manage. Decent VZ utes seem to be in ample supply compared to older VY/VU utes but the alloytec just makes me think it’s silly even considering getting a VZ over a VY/VU. This is a discussion forum for the Australian Car Manufacturer General Motors Holden, primarily V8 based. Strong family resemblance between the new Alloytec V6 and the Hey guys i've got a few worries hoping someone can help me out, might be a lengthy one so just bare with me! First and the most of my worries, a couple days ago while i was removing the intake pipe off the TB to get to the water pump easier i found a decent amount of engine oil which had I'm getting ready to convert my VZ alloytec wagon to LPG, and i have seen various things on the internet that suggest that the V6 alloytec can only do around 50,000kms on LPG before having valve recession problems. My Captiva is an early build 2006 model which has the 3. What commodore engines are compatible with the Ra ecu, and wiring? I have the old motor for swapping over components needed. 5 mm pitch roller chains. General Information Cylinders 6 Re: Alloytec o2 fuel trim issues by aceycv8 » Sun Nov 12, 2017 4:18 am Hi it's a vz 05 Leo engine code The purge Valve in the passenger side of the engine ticks away when it's active - that I have noticed but didn't think it'd be the cause? I just pulled the cat off on that side and it looked good, no rattles and the cells are in good condition A customer fitted a set of replacement heads to a VZ V6 Alloytec engine. Hi guys, I'm thinking about trading in the ss soon & getting a V6, being either a ecotec or alloytec 175 engine. 2 litre Alloytec so I'm assuming it's very similar to the one fitted to VZ's and early VE's. Feb 9, 2026 · In practice, the Alloytec’s chains are known to stretch prematurely, especially in high-kilometre or poorly maintained vehicles. He said that he has dismantled Alloytec/ SIDI engines to address timing chain problem and has found their internals to be 'as clean as a whistle'. Hi all, Need help with a problem with my 05 VZ V6 Alloytec. When the timing chain does stretch, it won't break and leave you stranded, it will just give you a check engine light, maybe get a bit slower, obviously get worse over time but you'll still be able to drive it for a while. I've got a 2005 vz executive that has been having issues with low oil pressure and power loss. I think those alloytec engines went from the early 2000's to 2010-2011 around there and after it was just the SIDI for the 6 cylinder engine. The Ultimate Alloytec Performance Thread For anyone looking to gain from the Alloytec motor i think it is a safe bet if we roll what we know all into one. this gasket doesnt seal in any coolant passages Are you talking about the manifold to head gasket? I personally can't see how you'd get coolant in the inlet manifold then. Runs great except for the little hiccup it gives before the check powertrain message. PCV maintenanc "- Alloytec V6 engines: stretched timing chains In January 2006, 7. When started, the engine had no rattles but the low oil pressure warning light came up on the dash. moments ago writes No. Only look at examples with an impeccable history, preferably with an oil change history better than the specified 12 months / 15,000 kms. I always hear bad things about the Alloytec engines, if anyone could give me some feed back regarding common problems and possible issues that may come (with that many Hi guys, I'm thinking about trading in the ss soon & getting a V6, being either a ecotec or alloytec 175 engine. You don’t want to creat a vacuum leak or problem either. Alloy motors generally won't take the abuse that our old cast iron motors did, they were much more forgiving. OP are you sure that it is the timing chain. Indeed, Alloytec engines are known to have issues with timing chains; however, they do record cam/crank correlation codes for any irregularities in this area, which you do not seem to have. The fuel economy was claimed to have improved by around 2. Are your oxygen sensors reading rich? Lean? What data does the air flow meter show at idle and full throttle? Fuel A big maybe? Most earlier engine designs have the thermostat on the hot side of the cylinder head/s. 6L Alloytec engine can stem from variable valve timing (VVT) issues. Cadillac and Holden both tested variations of these engines in the United States and Australia. It sounds similar to a diesel engine Having a weird issue with a 2005 VZ HBA Alloytec engine. this is my first post so please be patient. 6LCheck for physical match before purchasing. It will be referred to in this guide as the Alloytec. The issue is that the timing chain becomes stretched and it requires a full timing chain replacement which was such a pain. In this example, a customer had a VZ Commodore which would not start one morning. It will the alloytec is a double overhead cam engine though so down the track getting more power out of it will be easier (i. The reason I ask is a family is considering getting a VE I'm responding to a post from 2018 about VZ-VE Alloytec issues, some of which are covered elsewhere, but not this particular problem. Nov 10, 2007 · It may just be that a V6 engine inherently isn't as smooth as a V8 or in-line 6 (a design problem that can't be fixed), or that high pressure DI engines are inherently a little noisy because of the higher pressures. Should be a helpful guide to new When in doubt with a sensor plug, take it off then put it back on firmly. Thanks Holden has revealed details of the advanced Global V6 engine that will provide the high-tech heartbeat for future generations of its Australian-built vehicles. My understanding is that the alloytec seems to have the thermostat at the input to the cylinder block on the cold input side from the radiator. 6 and 3. Early Warning Signs Many Owners Miss This is where most Commodore owners get caught out. The all-new, high feature Alloytec V6 is being produced at Holden’s Global V6 engine plant in Port Melbourne, Victoria. 8 Turbo LP9) as well as their own Holden 3. See our youtube video below for what's included in our timing chain kitsPlease note, this is a revised part PCV with bigger holes for better breathing Hey everyone I’ve got my sv6 I’ve been trying to sort a missfire problem in cylinder 3 and 5 under load and idle it runs like 95% but as soon as you take out out an try drive it it’s will missfire an 04 vz, 150 000k's, v6 Alloytec 190kw, runs rough at idle after replacing plugs, coils and injectors, (original scan Hey guys I have a friend looking at buying a 2006 VZ v6, the car comes with reg/rwc but the k's are relatively high (245,000). But as far as the thermostat and housing, your Acadia engine is essentially what's in the later model Commodores. But mineral oil or mainly city driving I would avoid due to risk of sludging. After a bit of advice, my nephew is buying a 2007 WM Caprice with the 3. Sometimes this Hey guys I have a friend looking at buying a 2006 VZ v6, the car comes with reg/rwc but the k's are relatively high (245,000). 6-litre Alloytec V6 in 2006. 6 ECM can be programmed to LY7. Engine starts and runs perfectly, smooth and not one rattle or tick upon startup. 6-litre Alloytec unit; confirming in the minds of some disgruntled buyers that the 3. I'm looking for some assistance from somebody who has experienced problems with the TPS on their Alloytec. So a couple of days ago I started the car and was greeted with the engine misfiring. I have recently replaced my Hbb engine with an alleged low klm hba alloytec in a vz crewman. Having said that I have seen some Alloytecs with much lower odo readings than mine, in pretty bad condition motor-wise, a consequence of lack of maintenance. At idle, the engine splutters and coughs, struggles when revving it, but everything's fine once up to 2000 rpm and above. Re: Ecotec or Alloytec V6? If you were going to get an alloytec powered commy then go for atleast the SV6. I have this reoccurring SVS and check powertrain. 6L 60-degree DOHC V-6 Peak Power (ECE): 190 kW @ 6500 rpm (Alloytec 190) 175 kW @ 6000 rpm (Alloytec) Peak Torque : 340 Nm @ 3200 rpm (Alloytec 190) 320 Nm @ 2800 rpm (Alloytec) 90 per cent of torque produced Introduction Manufactured in Port Melbourne, Australia, the Holden LY7 ‘Alloytec’ V6 engine was available from 2004 to 2009. Factory rodeo 3. Over the years, I've noticed posts from members who have experienced failures of one sort or another with an Alloytec V6. I don't care how common it is on LLT engines, all engines can throw engine codes and shake. All failed before 100,000 anything over that is prolly good or already fixed Wouldn't be many left that have it waiting. Worked alloytec, service them well and regular and they make amazing power, 400hp to the wheel to be exact I've got a VZ Commodore Executive Alloytec V6. When in "Performance" mode the transmission seems to "disengage" at closed throttle when decelerating (below 60 Km/h) which gives no engine braking Alloytec PCV cleaning Maintenance for HFV6 3. Holden was charged with developing smaller engines (Holden 3. 0 HFV6 (called the Alloytec V6) for local models. Have had a few problems with it and just wondering if anyone has any ideas. 6L LY7 engine and similar GM V6 engines. After the engine light came on a dealer has analysed it and says it's because of a faulty cat. I'm after some info on resetting the timing on my vz crewman ly7 LEO Alloytec engine my timing seems to be completely out due to the stretched chains,I was after some advice on how to re-time the engine from scratch. I did hear that the early Alloytec engines didn't have as many problems as the 2006 and later engines. I always hear bad things about the Alloytec engines, if anyone could give me some feed back regarding common problems and possible issues that may come (with that many Holden VE Commodore V6 Alloytec Thermostat replacement And Water Pump Replacement carfix 105K subscribers Subscribed I have recently replaced my Hbb engine with an alleged low klm hba alloytec in a vz crewman. I don't really want to put everything back before this is timed properly. A new timing chain kit was also fitted at the same time. 5-litre V6 to the locally produced 3. 6l alloytec with the "Check powertrain light on" , I live in the middle of nowhere and the closest mechanic to me with a diagnostic scan tool is 500 odd km away. 6 Alloytec engine, I have been reading all the threads on here and really can't find what I am after for him. No oil seems to be getting to top of motor. quote: Alloytec V6 engines: stretched timing chains In January 2006, 7. This problem can lead to significant engine damage if not addressed. And all the Alloytec engines in the VZ to VF and presumably the German made ZB, are known for thermostat problems. The LE0 and higher-output LY7 I am hoping someone can give a little advice here. 1st thing you need to do is a compression test to check the engine's integrity – go from there. Alloytec, faster then a ecotec , more modern engine , but a real pain in the ass to work on it . Slowing down then produces a stall. 7 mm inverted tooth timing chains were introduced for the LE0, LW2 and LY7 Alloytec V6 engines, replacing 9. 6-litre, 60degree V6 engine. I have a 2004 WL Caprice V6 alloytec with 140,000 on the clock, which has been fully maintained using only the best. Ive got a 3. ? Rattle VZ alloytec v6 - rattle in front of engine, sounds like a diesel. Surely you don't have to remove gearbox and timing cover? Got strange top end Has the fuel consumption improved on the later model V6 petrol Holden Rodeo? I think Holden changed engines in 2006. Dad's WM Caprice had a similar problem As these alloytec motors are so bad at sludging, you could have crap somewhere in the system blocking things, how was it when you pulled it all apart? And my last thought is an issue with the variable timing system, again, could be oil related, or a sensor maybe. Holden switched from the Isuzu 3. One of the quietest Alloytecs I've ever heard. I looked through a number of videos on YouTube and the Alloytec has just as bad a reputation in the US. I thought fuel delivery Here is Holden’s Alloytec V6 in glorious technical detail. Check the VVT solenoid for clogging or electrical faults, as it controls camshaft timing. I had bought a 2006 VZ SV6 Commodore Ute with a blown engine. wm15h, 65ow, qvid, onhw, y3utm, 0cu5tv, otkp, lmbupl, mxq6, ig5h,