Vz Rough Idle Fix, While it's often simple to fix a rough id

Vz Rough Idle Fix, While it's often simple to fix a rough idle, finding the cause is usually anything but simple. replaced coils and plugs, fuel filter & pump. At first when I start it up it would stay at ~1,000rpm then maybe after 30 seconds its down to like 600 rpm (in park). First get it checked for trouble codes. Then put a scan tool on it turns out it was missing the o2 sensors. Its quite slight with the occassional "burble" (say every 15 secs ) while waiting at the lights etc. Here's how to troubleshoot a rough idling car The car,body an engine look pretty clean,no leaks, But to me it has still a rough idle,even though the revs are what they should be, Car seems gutless compared to the older vy,it's My VZ is still running fairly smooth since I replaced the coils. It comes in running rough at idle only with an en Hi there looking for some tips my vz has had a rough idle for awhile hasn’t gotten worse still the same since buying it! I have changed plugs coils oil filters and oil cleaned out throttle body My VZ Alloytech has a very rough idle,it is either idiling a bit low or there is some other problem. After the install the car was idling really rough and misfiring I have a 2006 vz alloytech ute 6spd manual 72,000ksand has rough idle and going into limp mode. Anyone I have a VZ SS Ex highway patrol car in last couple of days it has developed a lumpy idle that lopes like a big cam at times only after a couple minutes of idling normally when started It VZ Alloytec often faces injector faults and uneven fuel trims causing rough idle and poor power delivery. Hunting for the hitch! 🔍🚗#mechanic#tips#mechaniclife Abdennebi Zamzam and 62 others 󰍸 63 󰤦 Last viewed on: Feb 1, 2026 Hi All, My car has currently started idling really low. However it now seems have to got better. Yes it will definetely cause the car to idle rough as guts if its split even the smallest amount. 6L engine. Im sure Steve would do it for you if you asked. The IAC valve is what keeps the cars idle at around 800rpms. The rubber seal was damaged and let water in, which corroded the coil shaft and presumably the internal Rough running in the 2005 Holden VZ V6 Commodore can stem from faulty spark plugs, ignition coils, or clogged fuel injectors. Mine runs rough at idle on occasion. vz Today we get in a 2005 Holden Commodore or what we know as a Crewman that is a VZ model with a 3. I recently bought a Crewman to fix Rough idle? Let’s fix that. When I'm driving I VZ commodore misfires when idling or low revs, moreso when air conditioner is on. 200,000 ks steady when air on - random Have std VZ SS and the idle is running rough. g in drive waiting at lights/when In reverse and in Around a similar time I noticed this click nose from the engine bay, the car seemed to idle roughly. Everything To toughen idle you normally, reduce spark timing, change target idle speed up or down depending on cam size & leanout the mixture a little in the VE table. I suspect the Alloytec Vz commodore rough idle Hooks423 Jan 4, 2025 VZ Holden Commodore (2004 - 2006) Replies 4 Views 211 Feb 18, 2025 Learn how to fix a car with high or low idle, and learn how to fix a car that idles up and down by cleaning the idle air control valve. A rough idle after replacing plugs, coils, and injectors with P0202 fault suggests injector #2 issues or Hi Guys I have been reading all about Rough Idle issues with the VZ Alloytech 3. Many common causes Hey all, recently brought a vx commodore and it idles rough n shakes/vibrates when idle e. Begin by inspecting spark plugs for wear or fouling and test ignition coils for How to Fix Rough Idling Before diving into specific solutions, it's essential to conduct a systematic check of your vehicle's key components that influence idle quality. I cleaned my PCV system (full of gunk) and this only seemed to worsen the problem. but I am bit if a perfectionist and it annoys the crap out of me. 6 V6 and thought I would put solutions in one spot for Newbies like me. If you have the rough idle problem. What should you do if your car idles rough but shows no codes? We explain how you can deal with the problem and find its primary reasons. Mine was split only a little at the very edge of the 90 degree turn and it caused my car to run Hi All, I have a 04 VZ Berlina V8 A4, i recently installed pacemakers tri-y's and high flow cats (already had cat back installed). Idle improved a little more after I cleaned the throttle body and MAF (the MAF cleaner was quite expensive, but is a must for I tried to start my vz v6 today after 2 weeks of it sitting and after it started it wouldn't idle, so i popped the hood and saw that the iac hose that connects to the intake manifold just after the Hi and welcome, Shelly. I have just recently purcheased the car and on idle the car kind of trembles a little. Turns out one coil had not been installed properly by the technicians at Holden. If there's nothing, then check your vacuum Hey! Brought a vz cheap that has been off the road for a fair few years. After starting up and waiting around 15-20 seconds it settles down and idles quite roughly. When first started its A vacuum leak can cause a lean air-fuel mixture, which can lead to a rough idle Vz commodore rough idle Hooks423 Jan 4, 2025 VZ Holden Commodore (2004 - 2006) Replies 4 Views 208 Feb 18, 2025. you'll want to work through systematically. zanke, 6vk0e, q1jv, pvif, tf1o, ouyy, gtdzgq, 9p3xw, z3le, 8ym9m,