rich idle, in the tune or something else?
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rich idle, in the tune or something else? Hey all....
I have been a ford guy all of my life and recently purchased an 04 vette and I love it.
I just finished up doing a G5X3 112 cam and spring install and long tubes and offroad xpipe install. These are the only mods on the car at the moment. I had a friend who is very good with these help me tune the car with hptuners and it runs terrific, has no knock at WOT but we have a rich idle problem. It's rich enough at idle to make a moderate cloud.
We adjusted the VE table down and smoothed it, took a lot of timing that gets pulled out and turned the rear o2's off and the normal stuff you would do to one. No matter what changes you make it still idles rich. Right now I am running it in open loop and it's still rich. When you unplug the maf in open loop it's still rich. The only thing I haven't done yet is put my new plugs in it because I don't want to foul a new set of plugs knowing its going to be too fat at idle. Does anyone have any ideas?
I can email anyone a copy of the tune if needed, I am not sure how to upload it on here. I bought the hptuners so I could tune my own car as I make changes to it. I am beginning to get a little frustrated. The only codes on the car are some u and b codes that most people on here have said to ignore.
Ryan
I have been a ford guy all of my life and recently purchased an 04 vette and I love it.
I just finished up doing a G5X3 112 cam and spring install and long tubes and offroad xpipe install. These are the only mods on the car at the moment. I had a friend who is very good with these help me tune the car with hptuners and it runs terrific, has no knock at WOT but we have a rich idle problem. It's rich enough at idle to make a moderate cloud.
We adjusted the VE table down and smoothed it, took a lot of timing that gets pulled out and turned the rear o2's off and the normal stuff you would do to one. No matter what changes you make it still idles rich. Right now I am running it in open loop and it's still rich. When you unplug the maf in open loop it's still rich. The only thing I haven't done yet is put my new plugs in it because I don't want to foul a new set of plugs knowing its going to be too fat at idle. Does anyone have any ideas?
I can email anyone a copy of the tune if needed, I am not sure how to upload it on here. I bought the hptuners so I could tune my own car as I make changes to it. I am beginning to get a little frustrated. The only codes on the car are some u and b codes that most people on here have said to ignore.
Ryan
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I also wanted to add that when you trim the ve table down in the idle range by 50% it still idles rich and will barely run, if you fatten it up it's rich. If you use the vcm scanner and set the manual afr to 18:1 it's still rich... just hoping for some ideas here....
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I can run a log later this evening and can post the tune, how are you guys uploading the tune to post it? Just attaching a file?
As said above, are you using a wideband?
Have the injectors been changed, or are they stock?
Check engine coolant temp on the log to make sure the sensor isn't unplugged, broken, or anything like that - that commands way rich AFRs.
Have the injectors been changed, or are they stock?
Check engine coolant temp on the log to make sure the sensor isn't unplugged, broken, or anything like that - that commands way rich AFRs.
Unplugging the MAF is the wrong way to go open loop. I think it goes into limp mode or something. Whatever it is, you can't tune with it like that.
If you want to go into open loop speed density (OLSD) to run solely on the VE table there should be some help on hp tuners web-site to do that. But don't do it blind, dude. Get a wideband.
If you want to go into open loop speed density (OLSD) to run solely on the VE table there should be some help on hp tuners web-site to do that. But don't do it blind, dude. Get a wideband.
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I am running open loop by only enabling closed loop at 250 degrees, I only unplugged the maf to see how it idled on the VE table by itself, I then plugged it back in. I do not have a wide band at the moment and I shouldn't need one for this problem because we are talking about idle, we arent talking about being rich or lean at driving speeds or under WOT the car is fine in those areas. At 6600 it shows no knock, timing mark on the plugs looks perfect and plugs look good. The car just idle's rich enough to make a moderate cloud and in traffic it can be somewhat frustrating to be driving a vette that is smoking. I haven't been able to make it idle lean yet even doing crazy drastic changes
The coolant temp sensor is working, the IAT is working also. Keep in mind the car is stock other than cam, valvesprings, long tubes, and offroad x-pipe. These are the only mods right now
Here is the tune on the car and the DTC's from two days ago, I still haven't gotten a chance to run another log to save it
The coolant temp sensor is working, the IAT is working also. Keep in mind the car is stock other than cam, valvesprings, long tubes, and offroad x-pipe. These are the only mods right now
Here is the tune on the car and the DTC's from two days ago, I still haven't gotten a chance to run another log to save it
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Verdad Gallardo Well, if you don't have a wideband, how do you know its rich? Maybe its not rich at all - maybe its oil smoke... did you replace the valve seals when you did the springs?
That tune is not in SD. This one is......april21.SD1.hpt
Also, you didn't have enough idle timing in it for that cam. Probably needs to be even leaner at idle too (lower VE).
Also, you didn't have enough idle timing in it for that cam. Probably needs to be even leaner at idle too (lower VE).
Download the tune I posted for you, and do a compare. The first tune you had posted was not in speed density, so any changes to your VE table you were making, weren't really making any changes. That's why you were making those changes and there was no difference in your fueling. If it's not in SD, you can't tune the VE.
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Download the tune I posted for you, and do a compare. The first tune you had posted was not in speed density, so any changes to your VE table you were making, weren't really making any changes. That's why you were making those changes and there was no difference in your fueling. If it's not in SD, you can't tune the VE.
here is a log of it pulling in the garage tonight, and the tune I was fooling with trying to lean it out with no success. I tried the tune you modified, cut the VE table under 1400 by 15% and it wasn't as rich, it eventually threw a MAF code on that tune and started huffing smoke again. I reflashed it with the tune below to pull it in the garage and it huffed right in to it's parking spot. Log and tune below
Are you using a wideband? Log that into your HPT so we can see.
BTW, a speed density tune SHOULD set a MAF code. FYI.........
If your MAF and VE settings get too far from each other you will throw a code. Also, VE changes while a MAF is enabled will have little to no effect. If your MAF is still enabled, lower the idle cells in the MAF sensor calibration table. Also, make sure your still in open loop or the narrowbands will run the show.
Bringing you to tears is a sign of lean, not rich!!!
Why do so many of you guys on here insist on trying to tune your own car without the proper tools... GET A FREAKIN WIDEBAND ON IT!!!
This is why I get frustrated on here and don't want to help people...
Why do so many of you guys on here insist on trying to tune your own car without the proper tools... GET A FREAKIN WIDEBAND ON IT!!!
This is why I get frustrated on here and don't want to help people...
Thread Starter
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How can it be lean and smoking rich though? That doesn't make any sense, the plugs are dry/pink/brown on the element and black around the tip of the threads which to me says rich idle, clears up driving... I could easily be wrong, and I will get an LC1 or something similar in a week or two to work from there...
Ryan
Good luck..........