Question about 2005 Chevrolet Malibu
I notice the problem occurs more often when car is driving uphill or under a load, but still happens during routine driving.
Shud get car scanned even tho no lite--computers are wierd-----cud be a transmission issue too--the idle air control may be dirty or egr valve--ignition components like plug wires--coil....are aging--getta haynes manual at partsplace
Posted on Jan 21, 2013
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Posted on Jan 02, 2017
It could be two choices either trouble with ignition or fuel. Check to see if you have fire at the spark plug. If you do then i would say its the fuel pump. If it was injector it would have to all of them at same time and that's not likely.
God Bless Greg
Posted on Nov 24, 2008
The fuel pressure regulator may be failing. If your engine code is "W" the regulator is under the upper intake manifold. You may replace the entire injector package or just the regulator.
DORMAN regulator Part # 55162 about $40
ACDELCO CPI injector Part # 2171431 about $400
These parts may last slightly more that a year if you are lucky. I carry an extra regulator and manifold gasket at all times.
Posted on May 13, 2009
no codes ? it happens, guess we'll go the old fashion way then. you are going to have to test every sensor like throttle position, idle mixture, mass air flow etc. and replace the ones that are defective. does it smell like gas coming from the exhaust ? this could be the choke being stuck, also controlled by computer that controls everything from the info it gets from the sensors.
Posted on Jul 06, 2010
Egr valve port hole have to remove the intake to clean but that's my problem rite now on a 4.3 vortec the port hole gets cloged with carben not slowing it to work properly.
Posted on Jun 07, 2011
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