LayinLo

iTrader: (9)

I actually learned a few things reading this.


I had the same idle problem and it turned out to be a boost leak. Hopefully your problem will be as simple as mine was to correct.

saiyanzzrage

iTrader: (11)

Would a boost leak cause this problem?

KevinD

iTrader: (56)

^yes, boost leak will cause it to do that.... and i sent ya a PM with a bit more explanation as to why.

evovin

iTrader: (64)

my car doesn't that's gona stall though...I will try to check a boost leak then if not i will change my sensor. Im still thinking why when i shut it off and turn the engine on goes back to normal reading the whole time???

DynoFlash

iTrader: (91)

# 1

I would do a bost leak - pressurized bost system test on any modified evo as a matter of regular maintenance. A huge proportion of evos have boost leaks of some sort. The only way to find them is with a pressure test.


#2

LM1 wideband sensors go bad

You MAY have a bad sensor - buy a spare sensor - they are cheap - and see what effect that has

# 3

exhuast leaks and exhuast manifold leaks can throw off 02 readings - make sure you have no pin hole leaks in the exhuast

Al

evovin

iTrader: (64)

Thanks Al for the advise! Where can I get a sensor? Can any sensor works?(from autozone) or do i need to buy it from Innovate?

saiyanzzrage

iTrader: (11)

I know with the AEM wideband, you need to order a replacement from them...

cfdfireman1

iTrader: (11)

Try their new firmware then do a free air calibration before you spend the money on the new O2. http://www.innovatemotorsports.com/s...re/lc1v110.dld
Bosch #17014

saiyanzzrage

iTrader: (11)

one thing i havent tried is resetting the ecu...not sure if you are supposed to do that each time you flash the ecu?

ill reset the ecu and see how my idle is then...im also having a boost leak test done wednesday

evovin

iTrader: (64)

weird here...I drove the car and now the afr on cruise is 14's then goes down to 11's when I floored it!

C6C6CH3vo

iTrader: (9)

Exhaust leak upstream sensor will make it lean at idle but that would be more consistant of a problem. Ground offsets can make screw up like it's doing.

KevinD

iTrader: (56)

its sopposed to do that

evovin

iTrader: (64)

^ so boost leak? I haven't check it yet coz I worked today.

saiyanzzrage

iTrader: (11)

perfectly normal

Q@EvoPowerMods

iTrader: (23)

When we installed mine we had to make sure we had the proper voltage, and ground. I think it is an electrical problem by not getting proper voltage, try moving the wiring around to a better hot lead and ground to solid connection.