Problem with my 2004 Chevy Malibu
2.2 Ecotec
Check Engine
GM Computer codes = Misfire
Lube Jobs Replace oil and oil filter, replace air filter, replace tires, replace head
light
Work done to repair this problem = Replace the ignition coil pack,
spark plugs,
Plug wires(boots), fuel pump, and fuel filter. And tried cleaning out the
converter.
GM tech = KK
question = My Question is what is the problem when i start the car it shakes
and has a hard time picking up speed? I did a test and it said a misfire. So i
replace the plug, plug wire, ignition coil pack. I started the car and it still shook
but not as bad. Then i replace the fuel pump and the fuel filter. Then i took it
for a test run. The car reach a max speed of 45mph. But it still shakes and has
a hard time picking up speed. So i don't know what the problem is. Later i took
it for another test run and this time the car only went 10mph and it started to
smoke inside the ride. It also had a bad smell inside. So Thanks for your time
and hope to get a response.
GM Tech KK:
A few possibilities.
Sounds like the car is running only 2 cylinders. The ignition control module is
a common cause for this. Need to find out what cylinders are misfiring. You
can do this by removing the coil assembly, and install 4 old plug wires
between the coils and the cylinders. Then use a grounded test light to cancel
each cylinder. The ones that do cancel and make it run worse or die- these
were firing and are OK. If 1 or more do not cancel, they were not firing to
begin with- and that is the cylinder(s) that have a problem. Check for spark
coming out of that cylinder plug wire. If no spark, then sounds like ignition
module.

Bad injectors will also do this, but not as comm.

The engine timing may have jumped. Need to do a compression check on all
cylinders to make sure they are all close readings to each other
Chevy Malibu Misfire Codes Runs Bad
Problem with my 1996 geo tracker
Engine size = 4 cy.

GM tech = SF
question = I drive a 1996 geo tracker 16 valve 1.6 liter. I live on a small island where the engine never really warms up. The
EGR
tube becomes restricted with a gummy carbony sludge about every 1000 miles. There is very little blow by. Has anyone attempted
to insulate the erg tube in an attempt to keep it hot and reduce condensation of exhaust?  I am seeking a permanent solution.
SF:
Have not heard of any type of insulating the tube.
A Little blow-by is too much. May want to try an oil additive to reduce blow-by. Also check the
PCV system.
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