Tactic$

Lately, I have noticed that while on decel, with the car in gear, the wideband has been flickering from "air" to "lean" (its the plx300).

For the past two days now, during the same "decel" the injectors are turning on. I get a reading of about 12.5 a/f when it happens. (keep in mind, this happens on decel, in gear)

I throw a CEL when it happens..... I'm thinking TPS? or an injector sticking? Ideas welcome

Setup:

Uberdata (yeah)
440cc RC's
boosted. (im sure this really has nothing to do with it)

Its ran great up until just a few days ago. perfect A/F with exception of this.

-Jase

DaveF

any smoke ? white ?

LilCivic04

throttle body sticking, try cleaning it. also then reset the ecu. i had the same problem and it seem to fixed it

mike93boost

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tactic$ &raquo;</TD></TR><TR><TD CLASS="quote">Lately, I have noticed that while on decel, with the car in gear, the wideband has been flickering from "air" to "lean" (its the plx300).
</TD></TR></TABLE>

that's what it is supposed to do.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tactic$ &raquo;</TD></TR><TR><TD CLASS="quote">
For the past two days now, during the same "decel" the injectors are turning on. I get a reading of about 12.5 a/f when it happens. (keep in mind, this happens on decel, in gear)

I throw a CEL when it happens..... I'm thinking TPS? or an injector sticking? Ideas welcome </TD></TR></TABLE>

could be a bad tune.
why don't you check your codes? that would make sense..

Tactic$

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike93boost &raquo;</TD></TR><TR><TD CLASS="quote">that's what it is supposed to do.
could be a bad tune. why don't you check your codes? that would make sense..</TD></TR></TABLE>

I don't think that its supposed to flicker back and forth. Never did before. (i've been boosted for over a year now)

Been trying to check the codes. I work 12 hour days, sometimes 7 days a week. I know it only takes a second, but I was kinda hopin the friendly HT community would help out. Thanks for your reply anyways.

Smoke: No. None.

Throttle body: I dunno about this one. The injectors DO shut off on decel, until about 5k, then the injectors come on, the PLX reads 12-13ish, and I get a CEL. Pull over, key out, restart, code gone. Thanks though. You reminded me to clean the TB anyways

I am however going to reset the ECU. Its something that I had thought of too.

Thanks guys. If anyone has anything to add, please do.

Tactic$

Morning bump

mike93boost

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tactic$ &raquo;</TD></TR><TR><TD CLASS="quote">I don't think that its supposed to flicker back and forth. Never did before. (i've been boosted for over a year now)
</TD></TR></TABLE>

on what you described and what i quoted and replied to.. YES that is what it does on decal when you let off the gas. it is normal. and i dont care if youve been boosted for 20 years, youre still a dumbass.

Tactic$

...


Modified by Tactic$ at 9:32 PM 4/29/2006

Tactic$

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike93boost &raquo;</TD></TR><TR><TD CLASS="quote">that is what it does on decal when you let off the gas. it is normal.</TD></TR></TABLE>

Care to explain why this is, smart guy?

Tactic$

Still having the problem. Any help?

dpetro1

tell us what CEL you are getting and then we will be able to help you.

it is normal for the wideband not to have a reading on decel, because when you let off the gas the injectors turn off.

LilCivic04

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tactic$ &raquo;</TD></TR><TR><TD CLASS="quote">Lately, I have noticed that while on decel, with the car in gear, the wideband has been flickering from "air" to "lean" (its the plx300).</TD></TR></TABLE>

well when your off the pedal, it should go to "lean" then to "air." thats normal man. i've been driving way over a 2 years on my plx-m300.