Stalling and bouncing idle (after fixing idle switch)

**Toni** · 05-05-2014, 08:14 PM

Well I figured one one problem. I flashed one of the older v2 beta roms that we used from the last dyno. My fuel trims started working. So there is something wrong with either the V2 you gave me or an error in transferring data from one to the other.

I tried to make the fuel adjustment changes you mentioned, it didn't make anything better, same situation.

If I set my target rpm with AC on and the car doesn't reach it, does that mean anything? It adds 20 points to the idle motor but doesn't seem like it's enough.

**Greg E** · 05-05-2014, 09:38 PM

There's nothing wrong with the V2 release. Check periphery 0. Are long term fuel trims disabled?

If playing with the MAF scaling didn't do anything, you'll have to slow the signal down from the MAFT.

**Toni** · 05-05-2014, 09:53 PM

Just making sure I didn't get a version that you may have been working on or something.

I have the trim related bits enabled. 1,2,4. Actually, comparing the rom with a stock v2 rom, I don't have any differing bits in p0.

I also tried to add fuel with the gen II. Confirmed there was a change in the sensor monitor and still had the idle issue. Doesn't take much, a couple mph down the short driveway and a stop.

**Greg E** · 05-06-2014, 02:19 PM

You are for sure seeing the idle switch enabled in EVOScan? It'll be 1 with the foot off the gas and 0 with it on the gas.

**Toni** · 05-06-2014, 02:33 PM

Yup, you can even see it in my graphs posted above.

**Greg E** · 05-06-2014, 03:31 PM

I had to download the graph onto my phone to see it in any detail...

At any rate your ISC is fighting to get your target RPM but its response is too much.

Do you have that same log as above with the narrowbands?

**Toni** · 05-06-2014, 03:43 PM

Not at the moment but I can get one in a few hours. I'm guessing I should flash back the V2 rom which at the moment doesn't appear to have working fuel trims for whatever reason?