Question about 2003 Chevrolet Blazer
My truck runs really bad and I get obd2 codes p0200 and p0305
P0305 is a misfire on number 5 cylinder replace spark plugs, wires cap and rotor button. Please note: Does the ac cooling line/hose go over top the distributor ? If so GM/CHEY had a problem when dripping from that AC line/hose dripped down onto the distributor. That caused miss fires after a time. I hope this helps, Lee.
Posted on Feb 10, 2014
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Posted on Jan 02, 2017
these were bad for the spider injectors to fail. they are hard to diagnose with out the scan tool. the poppets in the end of the injectors get clogged and will need to be replaced. pull the plug and see if its oil fouled. they also have a problem with the #1 cyl getting out of round and oil fouling the plug. compare it to another plug in the engine. if its oil fouled the engine is no good.
Posted on Nov 07, 2009
Hook up a fuel pressure guage. Now with the key on and engine off does the fuel pressure come up fast and hold steady at a fixed value?
Posted on Dec 28, 2008
SOURCE: 1997 chevy truck running rough
Is this a 5.7? They are notorious for intake manifold gasket leaks. When mine did it, the diagnostics blamed it on an ignition misfire also! Replaced the gaskets and it runs smooth!
Posted on Apr 01, 2009
Hello and welcome. this code P0101 indicates a problem with the mass air flow sensor. this usually requires the replacement of the mass air flow sensor. but there will be a few checks to be made before the sensor can be condemmed
Posted on Oct 24, 2010
SOURCE: 1997 chevy blazer gets a
p0300 is an engine misfire detected p0301 would be misfire detected on #1 cylinder and so no throught p0306SOo seeing its not related to any one cylinder i would check the crank shaft position sensor first because that and the cam shaft sensor is what detects all misfires Itcould also be caused by any of these sensors TP MAP IC VS ECT throttle position -manifold absuliute press -idle control -vehicle speed -engine coolant tempature By the way are you getting any codes or is your mil light on if so you should read the codes thatcould tell more then any one on line good luck
Posted on Nov 04, 2010
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