LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Im throwing codes.. p0155 and p0300

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Old Dec 30, 2010 | 08:20 AM
  #16  
Mystique's Avatar
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From: Missouri
Re: Im throwing codes.. p0155 and p0300

Cleaned the MAF with a q-tip and alcohol, changed the fuel filter and put some seafoam in the gas tank. I have better throttle response but the misfire is still there at high speeds. Tonight Im checking plugs wires and coil. Wish me luck. And thanks again for your help.
Old Jan 9, 2011 | 06:04 PM
  #17  
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From: Missouri
Re: Im throwing codes.. p0155 and p0300

Swapped the o2 sensors, the code followed from the passenger side to the drivers side. Got a new o2 sensor, cleaned the maf, cleaned the IAC and made sure my grounds by the coil were corrosion free. So far no codes. Ill post again if they come back.. Thanks guys
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