CEL ON more than OFF!

1.8-liter VVTL-i (2ZZ-GE) and VVT-i (1ZZ-FE) engine, transmission, exhaust, intake, and performance tuning discussions
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Vibedad
Posts: 38
Joined: Sun May 22, 2005 12:40 am

CEL ON more than OFF!

Post by Vibedad »

Have a Cosmo on my 05 Base that has worked great with only a few problems in 6 months. Now, about every other day, my CEL is ON! A quick check with the dealer found it to be related to air flow so I know it's my CAI. I have checked all the connections as well as the filter and all seems OK. When I reset, I let the car idle for at least 15 minutes.Has anyone else experienced this?Where should I look or what should I do?
Vibedad 2005 Base Vibe, Abyss, 5 spd, Moons & Tunes, all options but leather, Tinted, Cosmo CAI, Megan STB, Tein S Lowered
Lancer
Posts: 1365
Joined: Mon Jul 15, 2002 3:53 pm

Re: CEL ON more than OFF! (Vibedad)

Post by Lancer »

What type of air flow problem?Check to make sure that the MAF is on correctly and not backwards.Clean the air filter.Clean the MAF sensor.If you still have a CEL on, put the stock air box in for a while and see if it comes back. Good luck!
18" Enkei's & Kumho Ecsta's-------UNICHIP Eibach Sport springs----------Morroso oil pan Injen CAI & Oil cap----------Stage 2 FI cams Custom Exhaust-----------TRD Supercharger AEM alt. pulley -------JSP Carbon Fiber hood 380cc injectors----DC Sports ceramic header
zionzr2
Posts: 3174
Joined: Tue Jul 27, 2004 4:59 am
Location: Austin, TX

Post by zionzr2 »

something to try:1. disconect battery overnight2. reconnect battery 3. start car and let idle for 5-10 minutes
Vibedad
Posts: 38
Joined: Sun May 22, 2005 12:40 am

Re: (zionzr2)

Post by Vibedad »

Will the long battery disconnect make a difference? I just don't know what effect this would have.
Vibedad 2005 Base Vibe, Abyss, 5 spd, Moons & Tunes, all options but leather, Tinted, Cosmo CAI, Megan STB, Tein S Lowered
Vibedad
Posts: 38
Joined: Sun May 22, 2005 12:40 am

Re: (Vibedad)

Post by Vibedad »

Checked my paperwork from the Dealer. Code set was PO171 - diagnose cause of lean condition.Codes cleared and retested 5% @ idle
Vibedad 2005 Base Vibe, Abyss, 5 spd, Moons & Tunes, all options but leather, Tinted, Cosmo CAI, Megan STB, Tein S Lowered
Lancer
Posts: 1365
Joined: Mon Jul 15, 2002 3:53 pm

Re: (Vibedad)

Post by Lancer »

You only need to disconnect the battery for about 15-20 minutes to completley clear the CEL. But it's easy to do and there's no harm in leaving it off overnight.I doubt that just a CAI would be the cause of a lean condition bad enough to throw a CEL. Try some fuel injector cleaner and run some higher octain gas through your system and see if that helps.
18" Enkei's & Kumho Ecsta's-------UNICHIP Eibach Sport springs----------Morroso oil pan Injen CAI & Oil cap----------Stage 2 FI cams Custom Exhaust-----------TRD Supercharger AEM alt. pulley -------JSP Carbon Fiber hood 380cc injectors----DC Sports ceramic header
goodvibe
Posts: 915
Joined: Sun Jul 27, 2003 10:39 pm

Post by goodvibe »

Did you oil the cosmo filter as recommended? You may have oil on the MAF. It won't need much with the CAI that already runs a bit lean. Reset when finished and cross fingers.
Vibe GT, TRD springs, Progress bar, STB, Unichip, Borbet E 16x7.5, 225/50 Bridgestone RE750, beefed up grounds and battery bypass capacitors(had em laying around)
Vibedad
Posts: 38
Joined: Sun May 22, 2005 12:40 am

Re: (goodvibe)

Post by Vibedad »

Oiled when first installed which was back in May, so I doubt that would be the problem now. I will try some injection cleaner to see if it helps. I also noticed that the hose that runs from under the plastic engine cover into the CAI had a very tight bend in it. I am wondering if it was crimping so I have rerouted it. Do not know if that would have caused this problem though. What is that hose for?
Vibedad 2005 Base Vibe, Abyss, 5 spd, Moons & Tunes, all options but leather, Tinted, Cosmo CAI, Megan STB, Tein S Lowered
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