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Old 01-28-2022, 12:12 AM   #1
jjms777
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Member#: 528569
Join Date: Jan 2022
Default 2005 Sti Wont Turn Over P2102

I have a 2005 Sti, aftermarket turbo back, cold are intake with a stage two tune….. recently it threw a P2102 code and the motor died on me when I tried to start it and wouldn’t turn over so I removed the spark plugs and turned it over and got some extra fuel out of the cylinders then it started again and died after 10 seconds of running after that I removed the spark plugs and tried to see if there was more fuel in the cylinder but the car would not turn over so I hooked up jumper cables. nothing so I removed the starter and tried baring over the motor but it is stuck does this mean my motor is seized? The motor never even warmed up, no coolant in the cylinders. The motor won’t turn in ether direction with a breaker bar
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Old 01-28-2022, 08:40 AM   #2
undyjr
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Member#: 459692
Join Date: Dec 2016
Chapter/Region: South East
Location: Hampton Roads Va
Vehicle:
2019 WRX STI
silica black

Default

Without plugs you could spin the crank with a stubby 3/8" ratchet. For the most part you're just actuating the valves. The next step would be to drain the oil and cut open the filter. If that looks ok I would isolate the crank from the valve train. This will require removing the timing belt. There is a specific procedure that needs to be followed to protect your valves.


Most of us pretty much know what has happened but we'll hope it's something different. Good luck to you and keep us updated.
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Old 01-29-2022, 10:19 PM   #3
DrD
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Join Date: Aug 2002
Chapter/Region: SWIC
Location: Albuquerque, NM
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2024 Legacy Sport

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So plugs out, and you can't rotate the engine at all from the crank pulley?

Hopefully you didn't crank it with a cylinder full of fuel...
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