Problem with my 2004 Chevy Malibu
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.
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.
Answer: 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
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.
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.
2004 Malibu Engine Misfire- Replaced Spark Plugs, Coils
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