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GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

Loads of Codes.

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Old Mar 26, 2015 | 12:25 PM
  #1  
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NYGS300
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Default Loads of Codes.

Car was running perfectly fine and then BAM, started shuddering at a red light at low idle and shut down. Cranked twice didn't start, finally started on the third crank. Parked up and put it in park, CEL light started blinking. Turned it off and left it.

Next morning started fine as it was cold and the idle was high to warm up. Drove around and was fine. Then the engine warmed up and same problem started happening. At low idle, its shaking like crazy and stalls. If I keep it above 2k RPM, it is fine.

Next morning, I played with the MAF sensor wire and car started running fine. CEL was still on, but wasn't shuddering at low idle, Drove fine the whole day and I must have drove about 10-15 miles the whole day.

This morning, started happening again. CEL codes are the following,

P1349
P0300
P0301 - P0306 ( Misfire on all Cylinders)
C0200
C0205
C0210
C0215
C1223
C1201
P0441

I opened up the engine to check the sparks and coil packs and found a LOAD of oil in the sparkplugs. I'm thinking the valve gasket is leaking oil? Any other opinions?

P.S. I plan on replacing the sparks, coil packs, wires, boots, and the Cam Timing Valve Assembly. As well as doing a timing belt kit replacement.
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Old Mar 26, 2015 | 12:39 PM
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Just to show you when I say it was filled with oil, it was FILLED with oil.
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Old Mar 26, 2015 | 01:05 PM
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Yes, the valve cover gasket is leaking oil into the valley of the plugs possibly causing the misfire. Type in the code in the search field and you should be able to locate countless threads, DIY and pics.

P1349 - is the OCV screen is clogged or needs replacing.

P0300-0301 - New plugs, new coils, and new wires should fix this.

P0441 - is an evap leak, maybe a bad purge valve at the canister.
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Old Mar 26, 2015 | 01:09 PM
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ah HAH that's what I didn't search. I searched for rough idle, stall, etc, but NOT the codes. How silly of me. Well I did order a valve gasket, OCV assembly, and need to source a place for the coils. Dealer is raping me for the prices of coils.
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Old Mar 27, 2015 | 08:47 PM
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Originally Posted by NYGS300
ah HAH that's what I didn't search. I searched for rough idle, stall, etc, but NOT the codes. How silly of me. Well I did order a valve gasket, OCV assembly, and need to source a place for the coils. Dealer is raping me for the prices of coils.
i have 3 coils for 90 picked up in queens, if you are local.
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Old Mar 28, 2015 | 10:33 AM
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Somebody correct me if I'm wrong, but wouldnt a bad ocv cause misfires and the random misfire codes just accompany the P1349. I wouldnt think replacing the plugs and coils is necessary and is only worth the cost if you want to tune up the car. Replacing the ocv would most likely clear the misfire codes. Check out this video I found, its interesting and something you might want to try:

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Old Mar 30, 2015 | 06:19 AM
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That's the thing, I took out the OCV and the filter was clean. I ordered a new assembly from amazon, anyone know if it comes with the sensor since its a bread new assembly?
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