Hi
Hope someone can help with fixing the issue of idle hanging. I have attached my tune as well as log at idle.
Also, the car idles above desired idle rpm (800rpm). It is 68 Camaro with cammed LS6, fast 92mm intake, fast throttle body, 42LB FIC injectors. Unfortunately, do not know anything about the cam specs as it was installed by the previous owner long time ago.
Thanks in advance.
Looking at your data log, it's idling at 800 rpm. The IAC counts are around 60ish so that's fairly close.
Pull a stock file off the repository and put all the throttle follower and throttle cracker tables back to stock.
Last edited by edcmat-l1; 02-13-2024 at 01:23 PM.
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Thanks for the input, will do that and see if that resolves the idle hanging issue.Originally Posted by edcmat-l1
Well, I did put back the throttle follower and throttle cracker tables back to stock but nothing has changed. Still the idle hanging issue is there. Anything else that I need to change from the tune? Thanks in advance
I don?t do tuning but had same issue on my 99 sierra. Turned out to be a vacuum leak. I did the starter fluid spray thing and nothing, hooked up a smoke machine and found three vacuum leaks. Running fine now. I am going to invest in one shortly.
Thanks for the input.
Well I suppose if there were any vacuum leak, it would be from the Intake Manifold. However, the intake I have was bought new and has less than 1000 miles on it. That is why I am wondering if there is anything in tune that is causing this issue.
Yes it's the tune.
I found injector data here:
https://forum.hptuners.com/showthrea...o-annyone-else
Confirm that you are running a vacuum-referenced regulator.
As far as the rest of the tune - start over. Load this if you want. Use VCM Scanner>Vehicle Controls & Special Functions to clear LTFT. Log it like you did the last one.
Thanks for sharing the injector data. I am running a vacuum-referenced regulator. I think it was a bad choice to get FIC injectors because the file they shared with me was incomplete and had to search for more data and feedback from members here. I guess that tune you shared is my tune but with correct injectors data?correct. Also, I am running MAF, but the modified tune is with MAF failed.
Last edited by 68camaroLS6; 02-18-2024 at 02:00 PM.
It's got a lot of changes. Have to tune the VE table. Trust me.
Will do that. However, I think I still need to make some changes into your file such as disabling closed loop, LTFT and some other changes prior to doing some logging for VE Tuning. Correct?
I am also sharing the injectors data I received from FIC when I purchased my injectors for your reference. There is a big difference I think.
Huh uh. Tune with the narrowbands. When it switches to PE then use the wideband.
Ah ok good you have data for them specifically. I found FIC 42lb'ers by searching generically. Tune updated with your data. It's ready to go.
Thanks a lot man. Will give this tune a try. Just wondering how you determined the injector pulse width of 0.714. I could not find anywhere in my injectors data.
Just giving a little headroom in case those 42lb injectors need to run low pulsewidths.
not saying this is the case but ive had a few that i reduced timing a bit in that area and it worked out fine for me. Start small if you decide to try this method.
Got it. Thanks👍🏻
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