bsptc27

alright so i had my emanage out of the car yesterday. i hooked everything back up put hte emanage back and went for a ride. i hit boost but when i did i saw it was REALLY lean(under WOT i ussually read 11.4afr) i hit full boost and it was 14!!! i immediately stopped and checked everything and sure enough the presure sensor that plugs into the emanage wasnt in all the way. when i came home after hat i let my car sit for awhile and it was idling off the chart leanand i could hear a high pitched noise from the engine when i popped the hood(i dont recall ever hearing this before)now i dont know whats making my car idle like this, any help would be appreciated.

bsptc27

bump, just wondering if someone could point me to the potential things that could have been damaged and whats making it idle like that?

equinox2355

take a look at your spark plugs, they will tell you a lot of whats going on.

EDIT: take a look at this link http://www.ngk.com/sparkplug411.asp

down near the bottom where it says
"Plug Problems
# Fouling

# Bridging

# Pre-ignition

# Flashover

# Quenching"

Click on each and compare the picture of the plugs to what yours look like.

bsptc27

thank you equinox, i was thinking lookin at the spark plugs cause tha was the only thing that was occuring to me to check, but i didnt know what to compare it too, thanks alot

equinox2355

Not a prob, keep us posted!

bsptc27

i checked all the plugs, all of them had a black coating over most of the tip of the plug similar to the picture of the Dry Fouled Plug

xIxAMxHOLLYWOODx

it was probably running way rich and fouled your plugs, hence the funny idle...

bsptc27

even though the idle problem started to become really bad once i hit full boost with the pressure sensor not in and it ran really lean? before that happened my idle was around 15.3-16.0 still kinda high but now its off the wideban its so lean. you think i should get new plugs and see if that fixes it?

xIxAMxHOLLYWOODx

yea, they sound like they need replacing.

yamaha16bw

The idle has nothing to do with the emanage so dont worry about that.

Could be plugs. Since they are cheap swap them and see if it changes anything. Also check for a leaking injector.

were you getting any Cel's?

bsptc27

yea my only code is saying that my system is running overly rich. does it matter which type of plugs i get?

xIxAMxHOLLYWOODx

not sure for f/i but stock calls for iridium plugs...

yamaha16bw

Denso IK24's (2 steps colder then stop) Try gapping at .040

bsptc27

oh, the plugs that came with my kit(treadstone) were NGK irididium 3 steps colder then stock.

bsptc27

i went with ngk 2 step colder iridium plugs....im gonna put htem in as sooon as they come in and hopefully this will fix my problem.

equinox2355

Ya hopefully they will.....

bsptc27

alright so i got my sprak plugs today, gapped them to .040 and i started her up and its still off the wideband lean at idle, also theres a sort of chugging noise that the car is making now also the motor noticebly shakes now at idle. im hoping something isnt seriously wrong with my car...

bsptc27

i used the obdII scanner just before and it my car has anotehr code after changing the spark plugs, code P0354: Ignition Coil D primary/secondary circuit malfunction came up. anyone have any clue to what this is/ how to go about fixing it?

yamaha16bw

Could be a bad coil pack.

Simplyscion

I doubt its a bad coil pack but see if anyone of your friends can swap coil packs out with you to see if its a problem. What year is your car? If its an 07 I can help you out here at the dealership with a leftover car we have just to test it out to see if thats the issue(actually they should be the same from 05-08 but who knows). Also, you should be running lean at idle...it should be stoich @ 14.7-15.xx a/f ratio...unless its something crazy off the charts thats not a problem if its in that range