Tapp idle afr

[t1demont1]

Well I got my car running again today... buuut my idle afr is around 10-11.5 rich as fuuuck i konw. I get missfires occasionally, and it missfires like crazy when i drive it, probably becasue how rich it is.

My afrs were alright before I demolished my head. I thought maybe it was rich now because before I had a big leak after the tb and before the adaptor plate for my 3" tb... and i had a nasty intake leak. However I reset the ecu and the problem persists.

Setup:
Tapp tune
3071r
spa Mani
Innovative wideband
NGK brk7es gapped to .027
3" tb
Supertech exhaust valves
large garret fmic

help me, i wanna drive my baby.

[t1demont1]

My fuel trims are fine, at 0%. However i looked at my missfires, i had about 300 missfires in cyl 2, and a few missfires elsewhere, i didnt really look at them, i was amazed at my cyl 2 missfir count jumping up like crazy in a matter of moments... Isnt missfiring cyl 2 related to the icm or ecm or whatever that thing is? I feel that this could be my problem... any ideas?

[Toyotatech]

It can happen on any cylinder mine was 1. You can test the ICM by running a resistance test with an ohmmeter by disconnecting both sides and running the leads to the input and output of each circuit in the ICM, they are numbered on the bosch unit on each side. All cylinders should have the similar ohm readings in the ICM. The center pin on the input side of the ICM is a ground, so there are 5 pins on the input side and 4 on the output.

[t1demont1]

Thanks im gonna go check this now.

[t1demont1]

Looks like a bad icm... i kinda used your method... i checked the input side since testing across the icm wasnt working... I touched the ground with one lead, and checked all the ones on the same side of the ground. I got like 4.96 ohms on 3 of them and like 2.484 on one. Arent these ******s expensive?

[A4ringedONE8T]

Looks like a bad icm... i kinda used your method... i checked the input side since testing across the icm wasnt working... I touched the ground with one lead, and checked all the ones on the same side of the ground. I got like 4.96 ohms on 3 of them and like 2.484 on one. Arent these ******s expensive?

Whats your ECU ID? I might have a spare ECU at the shop that will work

[t1demont1]

Whats your ECU ID? I might have a spare ECU at the shop that will work

ill go grab my ecu ID, but I need a ICM not an ecu

[A4ringedONE8T]

ill go grab my ecu ID, but I need a ICM not an ecu

Ahh ignition, sorry brainfart. PM me your VIN #, Ill see if I can dig one up

[A4ringedONE8T]

Just checked our parts supplier, there are a few different ones for different MY's. Retail new is $385 but I can get you one for less than half of that if you need it

[t1demont1]

I just re-tested mine, I tested it incorrectly the first time... turns out its fine... Which is good and bad, good because its expensive, and bad because idk what the hell it is now. Im gonna swap around coil packs real quick see if anything turns up

[A4ringedONE8T]

Good luck! Let me know if you need a hand, might try to make it up to Orlando this weekend

[A4ringedONE8T]

What injectors are you running?

[t1demont1]

Seimens 630cc.. I just swapped all my coil packs and spark plugs around... still not firing in cyl2

[t1demont1]

I could definetally use a hand this weekend man, I cant figure this out for the life of me

when i pulled the plug it looked just like all the others btw.

[Poopie]

check and clean your injector connectors.

[t1demont1]

Alright, I was thinking about that... I was gonna pull my injctors and have someone crank the motor to see if theyre spraying the same, but its a two man job and Im by myself atm... btw shawn i sent you a pm

[A4ringedONE8T]

Alright, I was thinking about that... I was gonna pull my injctors and have someone crank the motor to see if theyre spraying the same, but its a two man job and Im by myself atm... btw shawn i sent you a pm

Ill see what I have for ECU's and if I make it up there this weekend Ill give you a call

[t1demont1]

alright cool, thanks man

[mike-2ptzero]

My fuel trims are fine, at 0%. However i looked at my missfires, i had about 300 missfires in cyl 2, and a few missfires elsewhere, i didnt really look at them, i was amazed at my cyl 2 missfir count jumping up like crazy in a matter of moments... Isnt missfiring cyl 2 related to the icm or ecm or whatever that thing is? I feel that this could be my problem... any ideas?

If your car is running super rich your fuel trim readings should never read 0. That means the ecu is not adjusting fuel at all. Jake had the same problem with his car and the car ran super lean all the time. Lately I have been seeing more and more people that run Tapp posting that they are not getting any fuel trim adjustments which points to a programming issue on Tapp's end.

[bernB5]

i have fuel trim adjustments on mine. granted, my idle adapt is -10 and my part throttle is onlt -3, so it seems to be working.

I had the same problem as you and it ended up being a combination of a bad o2, dirty plugs, and the biggest difference was the inlet.

[JumboBlack1.8]

Did you just recently reset your ecu?

When I just plugged my Tapp ecu in a few weeks ago, i was getting AFRs at about 11 at idle, but 14 when cruising, with the occassional misfire here and there......after the ECU adapted (after about 50 miles or so...maybe less, not sure), AFRs at idle jumped up to around 14.7 and the misfires went away...


Then on Sunday, when I reset my ecu again after fixing some other issues, the richness and misfires resurfaced...and I'm assuming its because the ECU hasn't re-adapted....so, maybe giving ur ecu some time to adapt might be the solution

[mike-2ptzero]

Should only take a few miles for the ecu to start adapting the fuel trim.

[Nebone]

Jake was getting misfires like that (cyl 2 I believe) and 0 for fuel trims but his car never got enough miles on to see a difference. I'll try to find his logs.

Log your MAF readings; they might be low ~80-90 and you will need to adjust your inlet.

[317ssayzarc]

Jake was getting misfires like that (cyl 2 I believe) and 0 for fuel trims but his car never got enough miles on to see a difference. I'll try to find his logs.

Log your MAF readings; they might be low ~80-90 and you will need to adjust your inlet.

cyl #3... i had 200 miles on the tune w/o a reset at one point and it still ran like shit...

[t1demont1]

its not even drivable, i had 40 missfires within the first 15 seconds of the car being on

[Poopie]

replace the ICM and see what happens.

[bernB5]

sounds like ICM to me. is your CEL flashing when the car is idling though?

[t1demont1]

yeah its flashing at idle... I wasnt sure if it was the icm since i tested its resistance, and it came back fine... I guess i can get a icm and see if that solves it. Im gonna log my maf gs when i get back home see if that might be the issue but i think this is too much missfiring for it to be maf related. Would it flash at idle if the icm was bad?

[t1demont1]

Just checked our parts supplier, there are a few different ones for different MY's. Retail new is $385 but I can get you one for less than half of that if you need it

Ill check with my parts supplier today and see how much he can get it for me... if i can get it cheaper through you I will.

[bernB5]

yeah flashing CEL is usually only 1 of two things, at least that i've experienced...
1) bad ICM
2) bad coilpack

my car did the EXACT samething yours is doing. I never tested the ICM because i cancelled every other option out.. definitely just replace it and i'm sure your problems will go away.

here's where I got mine from.. fast shipping and the cheapest i found. $109
http://www.autohausaz.com/search/pro...ntrol%20Module

[Nebone]

Autohausz takes a week to deliver if you select free shipping. MJM shipping time is 2x faster.

CEL is flashing because of the misfires. Your car is practically running on 3 cylinders. Every Audi with ICM must have had a failure already in history. That part is so prone to failiure.

[Don Supreme]

I have an ICM for sale.

PM me if interested.

[t1demont1]

Ive got a parts place local that I use. I can usually get stuff same day, or 1-2 days later and they dont charge shipping. thanks for the help on where to get it though.

I know that icm is prone to failure, and at the wierdest times. Im beginning to belive it has to be the icm because i got a bunch on cyl1 randomly today while testing stuff out. and i already tried swapping everythign else around... coil packs, spark plugs,and injectors... same shit still.

I checked my air gs at idle today it was like around 3gs, is that too low for idle? I suspect it would be lower than normal anyways due to the missfire.

[mike-2ptzero]

Jake was getting misfires like that (cyl 2 I believe) and 0 for fuel trims but his car never got enough miles on to see a difference. I'll try to find his logs.

Log your MAF readings; they might be low ~80-90 and you will need to adjust your inlet.

Jakes car had misfire issues, running lean and even with him running it down the track and all the times we drove it into and out of the trailer it still had zero fuel trim correction readings. He even had plenty of codes with one of them being that the programming wasn't complete. That ecu/tune he had was a complete mess.

[317ssayzarc]

was told the programming incomplete was nothing to worry about... the running lean and shit, that was blamed on my car

[A4Rob]

was told the programming incomplete was nothing to worry about... the running lean and shit, that was blamed on my car

So is the incomplete program the same ecu you sold me?

[t1demont1]

fuck just replaced the icm and that didnt solve anything.. im out of ideas... anyone else got any?

checked my engine codes...

17967 p1559 035 - supposibly THROTTLE VALVE CONTROL
16684 p0300 035 - random/multiple cylinder: misfire detected (saved twice)
16686 p0302 035 - Cylinder 2: misfire detected (saved 3 times)

does anyone think this could be head related? if so im blowing this car up... or attempting to drive it into the ocean... dunno how far ill get with this misfire though

[Poopie]

swap injectors around.

[t1demont1]

swap injectors around.

i already tried swapping everythign else around... coil packs, spark plugs,and injectors... same shit still.

rawr

[t1demont1]

Im gonna pick up a compression checker tomorrow. Im stumped on what it could possibly be with the icm being new, swapped coilpack, sparkplug, injectors...

Well see what that reveals... besides that im out of ideas... ive tried everything i feel