STFT doesn't work at idle?
Thread Starter
Burning Brakes
Joined: Mar 2014
Posts: 1,238
Likes: 203
From: Lexington South Carolina
STFT doesn't work at idle?
So.... more bugs to work out since switching to ID1000's.
Car idles fine, but goes super rich at idle or slight throttle / no load situations (.81 lambda)
Noticed that my STFT stops working (freezes) when this happens. All my other normal driving modes needs tweeking but is close. Running closed loop with LTFT disabled.
Any ideas?
Car idles fine, but goes super rich at idle or slight throttle / no load situations (.81 lambda)
Noticed that my STFT stops working (freezes) when this happens. All my other normal driving modes needs tweeking but is close. Running closed loop with LTFT disabled.
Any ideas?
Thread Starter
Burning Brakes
Joined: Mar 2014
Posts: 1,238
Likes: 203
From: Lexington South Carolina
Le Mans Master
Joined: Apr 2011
Posts: 7,821
Likes: 412
From: Montreal
St. Jude Donor '13
Where did you get the short pulse limit and adder.... I don't think they are right.... although that wouldn't explain trims freezing
Thread Starter
Burning Brakes
Joined: Mar 2014
Posts: 1,238
Likes: 203
From: Lexington South Carolina
Got the data straight from a download on the ID site.
There were several charts to choose from depending on parameter setups. I think I picked the only ones that would work.
There were several charts to choose from depending on parameter setups. I think I picked the only ones that would work.
Le Mans Master
Joined: Apr 2011
Posts: 7,821
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From: Montreal
St. Jude Donor '13
Originally Posted by russ472
Got the data straight from a download on the ID site.
There were several charts to choose from depending on parameter setups. I think I picked the only ones that would work.
There were several charts to choose from depending on parameter setups. I think I picked the only ones that would work.
Your tuning SD, no MAF ?
Thread Starter
Burning Brakes
Joined: Mar 2014
Posts: 1,238
Likes: 203
From: Lexington South Carolina
Thread Starter
Burning Brakes
Joined: Mar 2014
Posts: 1,238
Likes: 203
From: Lexington South Carolina
the short pulse limit was changed to 3ms per the spread sheet from 4ms.
the short pulse adder is setup from 0ms - 4ms with 34 entries. the only option from the spreadsheet from 0-4 ms with 34 entries had slightly different numbers setup in the columns. so the numbers adjusted when pasting in.
the short pulse adder is setup from 0ms - 4ms with 34 entries. the only option from the spreadsheet from 0-4 ms with 34 entries had slightly different numbers setup in the columns. so the numbers adjusted when pasting in.
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Le Mans Master
Joined: Apr 2011
Posts: 7,821
Likes: 412
From: Montreal
St. Jude Donor '13
Originally Posted by russ472
the short pulse limit was changed to 3ms per the spread sheet from 4ms.
the short pulse adder is setup from 0ms - 4ms with 34 entries. the only option from the spreadsheet from 0-4 ms with 34 entries had slightly different numbers setup in the columns. so the numbers adjusted when pasting in.
the short pulse adder is setup from 0ms - 4ms with 34 entries. the only option from the spreadsheet from 0-4 ms with 34 entries had slightly different numbers setup in the columns. so the numbers adjusted when pasting in.
Thread Starter
Burning Brakes
Joined: Mar 2014
Posts: 1,238
Likes: 203
From: Lexington South Carolina
I found the flow rate/ pressure tables didn't paste correctly. Had to input each value individually, but didn't change anything.
I did log from cold and drove a few miles. STFT stayed on "0" until it got to 101f. Once I got about a mile down the road, ECT when I came to the 1st stop sign the STFT froze, went rich at 138f.
Maybe on my lunch break tomorrow I can start up cold and just let it idle until it freezes and see if temp is consistant.
Attached is my log if you want to watch it.
I did log from cold and drove a few miles. STFT stayed on "0" until it got to 101f. Once I got about a mile down the road, ECT when I came to the 1st stop sign the STFT froze, went rich at 138f.
Maybe on my lunch break tomorrow I can start up cold and just let it idle until it freezes and see if temp is consistant.
Attached is my log if you want to watch it.
Last edited by russ472; Dec 13, 2016 at 11:31 PM.
Le Mans Master
Joined: Apr 2011
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From: Montreal
St. Jude Donor '13
The staying 0 when cold is normal. The factory setting is 102, so yours makes sense. Freezing after is not normal. Going to look better at the tune tomorrow. Maybe something there.
Le Mans Master
Joined: Apr 2011
Posts: 7,821
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From: Montreal
St. Jude Donor '13
You numbers seem to be right according to the site. I have slightly different ones and I don't know why. Don't think it matters.
I don't see where your STFT are stopping. At what time are yo seeing that. I think one of your O2 sensors is dead, or not connected. In your log it doesn't move.
I don't see where your STFT are stopping. At what time are yo seeing that. I think one of your O2 sensors is dead, or not connected. In your log it doesn't move.
Safety Car
Joined: Jul 2009
Posts: 3,755
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From: Baton Rouge LA
St. Jude Donor '14, '16
Your data between 1.3ms and 2.3ms doesn't line up with the id1000 sheet I just downloaded from their site, nor does it match with my data for id1ks in my tune. I haven't looked at your log yet, but I'd definitely double check SPA..you have negatives in there.
Yours:
Mine:
Data (the rounding differences always trip me out):
Yours:
Mine:
Data (the rounding differences always trip me out):
Last edited by sevinn; Dec 14, 2016 at 09:47 AM.
Le Mans Master
Joined: Apr 2011
Posts: 7,821
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From: Montreal
St. Jude Donor '13
Your data between 1.3ms and 2.3ms doesn't line up with the id1000 sheet I just downloaded from their site, nor does it match with my data for id1ks in my tune. I haven't looked at your log yet, but I'd definitely double check SPA..you have negatives in there.
Yours:
Mine:
Yours:
Mine:
Race Director
Joined: May 2004
Posts: 16,667
Likes: 1,209
From: Raleigh, NC
St. Jude Donor '15
Yeah, injector data is wrong, at least for short pulse adder
Min PW is also probably too high
What's your fuel system setup look like?
Min PW is also probably too high
What's your fuel system setup look like?
Last edited by schpenxel; Dec 14, 2016 at 10:11 AM.
Safety Car
Joined: Jul 2009
Posts: 3,755
Likes: 190
From: Baton Rouge LA
St. Jude Donor '14, '16
Definitely need to go over your injector data again OP. I'll bet it will work fine once all that is fixed. Your min pw is .797 whereas it should be .125 from the data. That's a huge difference in the amount of fuel these injectors can dump.
Race Director
Joined: May 2004
Posts: 16,667
Likes: 1,209
From: Raleigh, NC
St. Jude Donor '15
That min PW table may be the issue actually.. if it's idling at the min PW then fuel trims can't remove anymore fuel no matter what they want to do.. so it may just be hitting the limit.
Would have to see a log to confirm, but change that whole table to like 0.125 and see what happens.
Would have to see a log to confirm, but change that whole table to like 0.125 and see what happens.
Last edited by schpenxel; Dec 14, 2016 at 10:46 AM.
Safety Car
Joined: Jul 2009
Posts: 3,755
Likes: 190
From: Baton Rouge LA
St. Jude Donor '14, '16
That min PW table may be the issue actually.. if it's idling at the min PW then fuel trims can't remove anymore fuel no matter what they want to do.. so it may just be hitting the limit.
Would have to see a log to confirm, but change that whole table to like 0.125 and see what happens.
Would have to see a log to confirm, but change that whole table to like 0.125 and see what happens.
Also OP I think you may be logging the wrong o2 sensors. You're logging b1s1 and b1s2 instead of b2s1 (I'm assuming you don't intend to log the post cat o2s).
Le Mans Master
Joined: Apr 2011
Posts: 7,821
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From: Montreal
St. Jude Donor '13
I was finally able to look at the logs. This is definitely whats going on. PW is stuck at .8 once it's warmed up.
Also OP I think you may be logging the wrong o2 sensors. You're logging b1s1 and b1s2 instead of b2s1 (I'm assuming you don't intend to log the post cat o2s).
Also OP I think you may be logging the wrong o2 sensors. You're logging b1s1 and b1s2 instead of b2s1 (I'm assuming you don't intend to log the post cat o2s).
