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2004 N* AWD
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26 Posts
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2004 North* 85,000mi, gitting codes P0300, P0308, P0638, U0001, U0101. Also loosing coolant with no viable leaks (one gallon in 2 months). I have changed out the Coils on the R bank a few months ago due to misfire on #3. Change one of the used good coils with #8 coil and replaced the plugs.
Any ideas where to look for the problem(s)
TIA
 

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05 srx awd v6 (gone), '07 GXP, 2010 li'l red wagon 3.6
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3,177 Posts
Well, here goes. 1st 2 codes are cyl 8 misfire, 0638 is throttle actuator control problem. U codes are problem w/ high speed CAN circuit and lost communication w/ TCM ( transmission computer). Those (U codes) may be spurrious codes caused by the misfire as may be 0638. Hope this helps.
Better have cooling sys leak checked. Could lead to bigger problem. Have you tried a good leak stopper yet? I would!
 
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