avengerhed

iTrader: (13)

Hey guys,

I'm having a weird problem with the car that I can't figure out. Here are the symptoms:

• AEM reads 13.9-14.2 at idle and part-throttle cruise
• ECU sees 14.6-14.8 in both the above conditions
• exhaust note seems to have changed, maybe a bit deeper
• seems to make boost OK
• idles fine
• pulls fine, maybe better than before...
• PRIOR TO THIS: my AEM had been all over the place, jumping from 14.1 to 15.3 at idle and part-throttle cruise

I'll investigate more tonite...I wonder if my front O2 sensor has taken a dump and the ECU is dumping more fuel than needed...I'll have to watch my EGTs tonite. Any other suggestions?

I are confoozed.





BTW, I may wash my car tonite.........

MyEvoDream

iTrader: (7)

are you still on stock 02 housing?

MR Turco

iTrader: (16)

can the exhaust note change from the rich condition? I know mikie said his car got quieter when he leaned it out.

Sounds like you may have a boost leak or your o2 sensor is approaching the end of it's life. Throwing any codes?

Was your AEM always reading 14.1-15.3? I know mine does something similar, i was nervous there was a vacuum leak.

Tim that sucks about being sick. Sorry to hear about your uncle.

avengerhed

iTrader: (13)

I think it *sounds* like it's running richer...I know that's a weird statement, but it just sounds more like it does when you bog a start.

The AEM was fine when I first put it in...running solid 14.7s at idle/part throttle. Then MA went to ethanol fuels and it got weird...reading more lean for a time, then more rich...I'd say for the past 4-6 months it's been sweeping through the 14-15 range at idle...

I'm wondering if that weird sweep is a result of winter gas? maybe the car's not appropriately compensating? And now maybe it's back off of winter gas?

Like I said, I'm confused.


And yeah, I'm on the stock O2 housing. And no codes at all...havent popped a code in over a year.

MR Turco

iTrader: (16)

The sounds could definitely be from running rich.

I know my car AFR's bounce all around which may definitely be like you said from the winter gas. Mikie, any input here?

I dont think we are quiet off winter gas yet so i would think there may still be an issue but see if it works itself out. As long as idle seems ok i would think you are fine.

Paulnsx

iTrader: (7)

davids call me if you want to make it a car washing party, i could be down. i'd have to blow off el gyme, at least until later. anyway let me know.

Paulnsx

iTrader: (7)

omg i want one... http://www.leftlanenews.com/lamborgh...o-lp560-4.html

in yellow or white...

EDIT: sick...

MR Turco

iTrader: (16)

Ok I admittedly am not the biggest lambo fan but ZOMG white, ZOMG hawt. Boner, i has it

Paulnsx

iTrader: (7)

yeah man.... im not the biggest lambo fan by anymeans.... but HOLY **** that thing is UBER HAWT

avengerhed

iTrader: (13)

that's what i was implying! w00t. i *heart* a clean evo.

MR Turco

iTrader: (16)

I might head out after lunch to do a little washing . I really need to do an under body wash.

avengerhed

iTrader: (13)

I knows a great touchless.......




U wanna wash your car by me, Turco?

MR Turco

iTrader: (16)

I will let you know. I might get it done mid day. I have some remote testing to do this afternoon so i am not sure i will make it out that way.

Paulnsx

iTrader: (7)

im gunna go out on a limb and say your clean evo *hearts* you! i know mine does.

MR Turco

iTrader: (16)

my evo actually smiles when it is clean.