1998 Chevrolet Silverado Codes P0300, P0306 and P1154

1998 CHEVROLET SILVERADO
298,000 MILES
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MUTT1972
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Just replaced all fuel injector (spider body assembly)
And my truck is still showing these codes. Just replaced coil and plugs and plug wires also. It's been idling rough while idling at red lights. Running rough on initial acceleration ( takeoff) and also getting poor gas mileage.
Oct 12, 2013 at 11:46 AM
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HMAC300
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have a pro diagnose the misfire codes as they are very hard to diagnose even for a pro. you migh tcheck maf sensor the other code is the O2 sensor is operating slow which may be from the first two codes sent. Only other thing you can really do is check compression and if low then that may be your problem.
Oct 12, 2013 at 12:14 PM
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MUTT1972
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Thank you very much!!
Oct 12, 2013 at 12:21 PM
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