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  1. #1 Re: Car getting horrible MPG 
    The Blue One blueguy's Avatar
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    Well what are the codes? How are they "pending"? They tell you the second they read them...
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  2. #2 Re: Car getting horrible MPG 
    SE Level Member Mercenary's Avatar
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    Quote Originally Posted by bluegtp91 View Post
    Well what are the codes? How are they "pending"? They tell you the second they read them...
    Dunno, That's what the guy said but the codes are P0305 (misfire detected in cylinder #5) and P0128 (Coolant temp is always low). The coolant one should be easy to fix, it's either a bad thermostat or needs more coolant.The misfire is what's botherin me I can't figure out what's causing it.

    Seaform was suggested to me but I dunno alot about it. It would be easier and cheaper than replacing the fuel injector.
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  3. #3 Re: Car getting horrible MPG 
    The Blue One blueguy's Avatar
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    Quote Originally Posted by Mercenary View Post
    Dunno, That's what the guy said but the codes are P0305 (misfire detected in cylinder #5) and P0128 (Coolant temp is always low). The coolant one should be easy to fix, it's either a bad thermostat or needs more coolant.The misfire is what's botherin me I can't figure out what's causing it.

    Seaform was suggested to me but I dunno alot about it. It would be easier and cheaper than replacing the fuel injector.
    ICM? And are you sure it is the T-Stat and not the actual sensor in the radiator?
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  4. #4 Re: Car getting horrible MPG 
    SE Level Member BANDIT's Avatar
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    The SeaFoam is like 13 bucks a can here in Canada, worst you can do is put it in and it cleans up your fuel system, but look at the butterfly in the plenum, that's where most of the build up was, on mine anyway.
    Good luck.
    04 GP GT Bone stock, just like me! 09 G8 GT...oh yeh!!!
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