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Old 05-30-2009, 04:38 PM   #1
Scooby Newbie
Member#: 210232
Join Date: May 2009
Location: Corona CA
2005 WRX STi

Default Electrical Problem?

I have a 05 WRX STi, and my car throws a "Check Engine Light" and Blinks "Cruse" ONLY at night time (when I turn on the headlamps), when I pull out my OB2 to read the code 90% of the time it reads NO CODE, and I have a 500$ OB2 that works perfectly. the other 10% of the time it reads a cylinder 1 Missfire. I have already checked for compression, replaced the coil packs, injectors, sparkplugs, O2 sensors, changed fuel filter, cleaned MAF sensor and checked for vac leaks. The spark plugs are telling me its running lean, but you can tell the car still has alot of power, telling me its not missfiring alot.

It also at NIGHT TIME (when I turn on the headlamps) MAINLY (It has happened a couple times during the day but it comes on every second at night time (when I turn on the headlamps)) the ABS light comes on and the DCCD starts blinking green at the bottom of the gauges.

I am starting to think that there is something funky going on electrical wise, and maby thats is the reason its missfiring at night and the ABS is taking a ****.

The STi is great but everytime I turn around its a new problem.

MODS: HKS Exhuast
Typhoon COld air intake (Thought this might be the problem for missifre so I put it back to stock, however it ran worse stock, and the car stalled when I had the air conditioning on at a stop)

PLease help me I really appreate it.

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