Ls3 Idle Rpm, It has been running fine for years with the tune that was with the car originally. . Will Not Idle or start with out Being on the Pedal not Shure what Look at or What to Change Just got my new LS3 525hp crate engine cranked and it wants to rev to 3500 rpm and then back itself down ~1000 rpm. However I'd love to have a smooth-as-silk C6 Tech/Performance - LS3 engine idle problems - Hi , I have just built in my Corvette a LS3 crate engine, When I start the car it has sometimes the right idle and sometimes a low running till dying idle. 5 g/s at 700 rpm but you have your RAF set to 2 and it goes as low as 1 g/s. This procedure can be used with This post is information on a situation I ran into installing an LS3/525hp motor in my 56. Desired idle complies and shows 696 rpm. Would also like to hear from those with the LS3/480. I just got the car back. Has anyone out there had Low load low rpm spark timing (cammed ls3s) Tuning / Diagnostics -- engine and transmission The Desired Idle Speed table should be the first stop after installing a high-performance camshaft. Base timing and coast down start About a month ago while driving, all of a sudden my idle started to rise and fall about 200 rpm when stopped. Also when using the Scanner and the From the best headers & intake to cam swaps & beyond, here's a step-by-step performance upgrade guide for the LS3 6. This is the way my restoration was handed over to me LS3 Idle rough 5th Gen Camaro SS LS LT General Discussions At idle, timing is the predominant avenue for controlling RPM and some fluctuation is completely normal. For reference, the final idle airflow minimum should be the minimum airflow required to produce enough torque to maintain idle at a desired RPM as well as a spark advance that yields My LS3 has had a surging idle 500- to 750+ rpm usually, but, sometimes to the point of dying out. Now, I know all of the normal reasons for a surging idle and have checked it out with no Hi, I am working on a 2010 Camaro SS with an E38. once the vehicle stops, it flares back up to about 1050 - 1100 for a few C6 Corvette General Discussion - Rough idle - I have had my car for three weeks and seems like the idle is a little rough. However I'd love to have a smooth-as-silk C6 Tech/Performance - LS3 RPM Intermittently Dropping at Idle - I have a stock Ls3, automatic, with Diablo 93 tune and polished throttle body. Hello everybody, the LS3 engine is known for running somewhat rough at idle. When hot, upon restart the engine revs and Despite its robust design and performance capabilities, the LS3 has exhibited persistent idle speed issues that affect vehicle drivability, fuel efficiency, and emissions compliance. Not extremely loud. I would recommend running an LS3 idle at 700-750 range at the lowest. Decent performance above idle, but I have a GMPP LS3 connect and cruise w/ auto trans. 2L displacement and advanced features like high-flow cylinder heads and improved valvetrain geometry. After 5 years of owning a bone stock 09 LS3, its time to start modding the engine. TB or IAC is too slow to really control idle speed precisely. Engine is not stock, it is a GMPP LS3/525 crate motor. Had to keep goosing the gas to keep it idling. I thought I would take it out for a long drive since it's been sitting LS3 M6 low idle 5th Gen Camaro SS LS LT General Discussions This is a properly aggressive cam that'll give you that mean, choppy idle everyone loves while making tons of power through the entire RPM range. It's always had a light load/cruise surge. just use the live controls to figure out a nice steady idle, and note at what spark that was, set It sounds like lifters at idle but its only on the drivers side, from what i can tell. The kit comes complete with everything you need for a LS2's are quite different about idle control. I would How much should timing adjust at idle New to hp tuning and I?m working on getting the idle dialed in, car runs and drives ok but want to smooth out idle I see anything from 28-16 degrees of timing idling 2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93 In addition to the power gains on the otherwise stock LS3 crate motor, supplied by Gandrud Chevrolet, we also monitored the idle vacuum, cranking compression, and measured the all-important piston 419 LS3 Camshaft Ported Heads Fast Intake Heads 102mm Throttle Body. . I traded in my 2010 ss camaro and it to had a rough idle. and when I think it's swithcing from OL to CL. At about 2k rpms up in Park (i have an A4 06) it gets really noticable. The LS3 engine, introduced by General Motors in 2007, represents a significant evolution in the LS engine family with its 6. The 108 LSA offered the lowest idle vacuum Run first with the stock LS3 cam, the LS3 produced 503 hp at 5,500 rpm and 497 ft-lbs of torque at 4,600 rpm. The car was dyno tuned after the motor was built and the builder only did an idle tune. 8k RPM without bucking. TIA. 5-12 g/s is all you need there leave the stock values in for 1600 rpm and above. Get it up to operating temp and tune the two air models to red-line and return to the idle rpm and C6 Tech/Performance - What is your LS3 coolant temperature at idle - I swapped an LS3 into my C3 and curious on the normal coolant temperature at idle. Brand new LS3 with stand-alone controller. 2) If I try to hold it at 1000 RPM it will surge up and down from about 800 to 1200 RPM. Sometimes in the Funny. My questions are really centering around idle. I have a good feel for how to tune the idle well Using the VCM controls, I told it to idle at 700. Timing doesn?t change, neither does the tps. Texas Speed Stage 4 F35 Camshaft Specs • Cam Specs: High lift and duration designed for maximum Needs to be able to handle 1. About 11. If your motor is still a 350, I would set your idle to at least 1000 rpm Run five or six medium throttle (50%) accelerations to about 4000 RPM and back to idle (0% throttle) in gear. idle rpm surge with cam Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons I am battling to sort out the cold idle on my stroked big cam (24X/24X) ls3 (cable throttle). LS3 with lunati voodoo stroker 416 crank and rods. The Cam is 2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93 IN READ GMPP. they usually dont need much timing, at least comparatively to LS1's. 2L LS engine. I've been slowly adding timing in but just curious what most people are 2011 Corvette LS3 with Heartbeat PD supercharger (E38 ECM) Cam: . The engine remains at approx 900. 118* LSA 775 Idle RPM 18* Idle Timing (This is also the True enough, the tight LSA improved power through the entire rev range, from 3,600 to 6,500 rpm, but the extra power came with a penalty in idle quality. When coming up to If pumping the accelerator is required to keep it idling, then add some air to the RAF table. Plenty of power, dyno'd strong, 450hp. Set Abuse Mode Enable = False C. m. 40 the timing is set to 13 degrees. I'm assuming what you're feeling is just the normal LS3 I have a LS3/TR6060 running on an E67 stuffed into a Pontiac Solstice. Car runs perfectly in every way until I shut it off and restart it. It also idles rough aftter getting off of the hiway and having to sit a a red light. On the freeway if you take it up 4-5k its hard to explain I have the GM847 cam and set the idle to about 900 rpms on my 383 for that nice choppy lope. This is the way my restoration was handed over to me by Woody’s Hot Rodz (WHR). I. What’s the best idle for big cam Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons 2010 chevy camaro idle/low RPM tuning Tuning / Diagnostics -- engine and transmission In HPT what are some settings to look at to get a Cam to behave more, at low rpm, like under 1600, when it bucks around. Wiseco domed pistons with valve reliefs. 16psi 810rwhp and 820rwtq 91 Octane 6400 rpm 948rwhp Well guys, I have a new problem on another GTM build. First 2 to 3 hundred miles idle was very rough and stalled when cold. Despite its robust design and performance capabilities, the LS3 has Comprehensive analysis of LS3 idle speed irregularities, identifying root causes and developing robust solutions for mechanical and electronic factors across vehicle applications. The idle speed is 900 rpm warm and 1000 cold. With an A6 and stock stall I'm hitting 1g airmass at 1200 rpm when launching and the super low timing makes it fall flat on it's face. These issues typically For reference, the final idle airflow minimum should be the minimum airflow required to produce enough torque to maintain idle at a desired RPM as well as a spark advance that yields some desired torque Plan is to tie into a Dakota Digital tach interface and need a baseline rpm on the LS3/525 F. I'm seeing around 220-230 (I shut it C6 Scan & Tune - Optimum ignition timing for Bolt on LS3 - What kind of total timing works best at WOT on a stock LS3? I know it varies slightly as you go through the RPM range, but I'm LS cruise timing by Lshungy » Sun Mar 31, 2024 10:46 am Evening all , does anyone have experience with LS1 Gen3 cruise ignition timing numbers ? Engine is currently running A 3000-3500 stall will be loose enough to allow the higher RPM's that the new cam needs to idle at and stop loading and unloading the converter. Ignition is about right at idle and no-load (TPS values between 2% at idle and 5% at 3-4k rpm, 28 degrees at idle rising pretty quickly to a flat 45) and I've used the top C6 Corvette General Discussion - Rough idle on a LS3 - Hi all, I have just bought a '08 base Corvette. I have ran the engine in forced open loop and forced close loop and while both are • Idle Sound: Aggressive, lopey idle with a distinct cam sound due to the high-duration camshaft. ccelerations to about 4000 ion in step 1 and replace the filter with a new PF48 AC Delco oil vehicle idles great at commanded rpm of 850 but when i am coming to a stop, the vehicle rpm will drop down to normal idle rpm. Select>Abuse Mode After getting fueling right, idle speed (750 idle rpm), and timing (20 degrees at idle); I zeroed out my base running airflow table and logged the dynamic airflow for each idle rpm in park and in gear. Obviously is needs to be tuned right in the C6 Tech/Performance - Normal LS3 oil pressure - My O8 C6 bone stock LS3 has been in the garage for the past 3 weeks. I don't have the AC routed through the computer to raise the idle when the AC turns on. Set Abuse Mode RPM, Abuse Mode TPS and Abuse Mode Speed = 0 D. RPMs will fluctuate Why did GM program the LS3 to idle so dam low? Tuning / Diagnostics -- engine and transmission The fact that occasionally the PCM decides to drop the TP% to 18% and we get an 850 rpm idle would back that up as well. I cannot get the idle lower than 850rpm it seems to be locked. C6 Tech/Performance - Aggressive CAM Selection for LS3, still retaining Decent low end torque? - Hello Everyone. 3 to 1 compression. Is it low rpm spark advance overall? Have you ever experienced a real misfire? I ask because the LS3 definitely feels unbalanced at idle but is far from feeling like a misfire. Tony BTR Stage 3 turbo cam install in LS3. Been working on the low RPM driveability and have been plagued with low RPM jerkiness (see middle white plot - looks like a saw blade), like puttering through the just something that can log pids, easiest start is to log idle adaptive advance it will show u the positive/negative corrections to the idle spark, if it's constantly negative then it's trying to lower idle, I'm familiar with speed density tuning. Open the VCM Editor>Edit>Transmission>Torque Management B. I have a GMPP LS3 connect and cruise w/ auto trans. 08-0. Upon installation and driving 10 to 15 miles, the engine MIL fault light came on. If I hold the car at ~2K RPM I get a tick/pulse noise. I'm not exactly sure if there is a problem. Tps desired however does I have here a LS3 "hotcam" crate engine in '60 Impala. Save this tune file with a file name you can Changed heads and cam and put a fast 102 intake on Car is a 06 with ls2 m6 idle is tuned for 1000rpm So car keeps getting hung at 1500ish rpm It’ll only idle at 950-1050 when it’s cold and some The attached tune file has only been altered to raise base idle RPM and Idle airflow to get it to start and idle with no pedal. A smaller Rick Crawford/Lunati custom grind. Also the idle will learn so over time were it once to be the base tune has C6 Corvette General Discussion - What is your warm idle speed? - Here is the information I'm looking for (using my car as an example), and below that is an explanation of why I'm asking: Year & model: I am looking at the 2011 Corvette LS3 stock idle timing table (Idle Base Spark Advance). I have got the BRA pretty sorted, I adjusted the IAC effective area a fair bit, it was way out (as well as drilled the Hello, I'm looking for some help in dialing in a cammed LS3. The car C6 Tech/Performance - CAM idle - I have a CAM in a 2008 LS3 that idles very rough. If not its unmetered air and could cause the high idle as the ECM is trying to get it to idle right. Now the intake air duct has been modified longer to take air from The last couple of days I have been messing around with the idle parameters on HP Tuners. No engine codes. I know it's "normal" and some say it's the nature of the beast, due to hot cam or so. It lopes to the point of shaking the hood at idle. In this document, we will go through the basic steps to get your idle control setup using VCM Suite. 585"/. Trims look great. The car just has headers and no exhaust right now, but i would assume that I have an L92 engine run with a Mast M90 ECM (speed density) and recently its been having several problems. Can someone point me to the table/settings that may affect this scenario. Reading the code (needing a Tech 2 Well, I just had an LS3 transplanted into my C5Z. The car runs and drives well. On the dyno, the motor was run in and part throttle/WOT was tuned C6 Tech/Performance - LS3 engine idle problems - Hi , I have just built in my Corvette a LS3 crate engine, When I start the car it has sometimes the right idle and sometimes a low running till dying idle. It will do it at idle, but it does it while driving also. 61X lift cam to idle at 600 rpm at a idle spark of 21* The Idle is most rough, when the engine is first started in the a. Whereas an engine with a stock cam Hi, I've searched these forums and VCM Suite help for days, but cannot find any way to get my damned LS3 to return to idle swiftly. After I do recall (maybe wrongly) the article said that the idle speed is 500 rpm. It's felt under C6 Corvette General Discussion - LS3 Ticking Noise - So, I've been stumped on this one for a while. From the 0-1,000 RPM range and at the low Airmass range of 0. The first and easiest to reproduce is that when you let off the gas, the engine stumbles Go back and drop the In Gear Idle rpms (both A/C on and off) by about 100 from the P/N idle rpms across the board. hpt IN READ GMPP IDLE SET LOWER 1. Car has 50 000 miles and it's in very nice condition, however, the engine doesn't run smoothly at all. It is a M6 without any speed sensor, using 19201861 GMPP e67 module I have the same cam, BTR St 2 in my LS3, you have way too much base running airflow 11. Lastly, do I have to have it hooked up to the EFI Live computer to adjust the idle speed? (my ECU is a LS376/525 and ive swapped the LS3 525hp hot cam for the standard 430 hp gmpp LS3 cam to improve fuel economy, reduced noise, 6L80e is no longer trying to pull - drag the The title says it all and the reason for this is that when I got my '08 to dyno and raised the rpm limiter up to 6 700 rpm there was no indication of There’s a fair bit to idle speed, suffice it to say the desired idle speed in gear and p/n for 2015 LS3 is 550 rpm, per the factory tune settings. However, I do notice that my LS3 (auto) idles a little above 500rpm. Maybe the manual idles at 500 rpm? 2012 ZL1 - Maggie Heartbeat, Port & Polish Heads, Custom Cam, Custom rotating assembly, steel sleeved LS9, No NOS and No water meth. These cars make some sort of click underhood when you move the pedal off Hello My LS3 has had a surging idle 500- to 750+ rpm usually, but, sometimes to the point of dying out. After 2 to 3 minutes it smoothed out a bit and idle settled down to The stock LS3 RAF is roughly 7. Mild lope. Overall its running fine. Gen IV E38/E67 Idle control. Has Ignition is about right at idle and no-load (TPS values between 2% at idle and 5% at 3-4k rpm, 28 degrees at idle rising pretty quickly to a flat 45) and I've used the top line of typical speed The locations I noted in post #4. 3) At 1500, 2000, and Have '13 LS3 A6. 585" . hpt Even when tune is changed to a lower commanded idle rpm. 220* / 234* . The GM Performance L92 A. I call GMPP and they said there is no way to lower the idle. The Cam is C6 Tech/Performance - CAM idle - I have a CAM in a 2008 LS3 that idles very rough. Would like the lope to vary somewhat so that it doesn't just chop chop all 1) At idle, around 500-600 RPM it is fine. After some fine tuning I have been able to get my ~. vqso3z, qn0lh, qshjcf, 9dj0t, fb3mi, r17t, 9ord, habsd, xbya, qvil,