Don asks.
Dear BL: How do i replace the crankshaft position sensor on
a 2003 chevy malibu.
BL:
That depends on which crank sensor.
The 7x sensor is between the engine and the trans. Hard to reach with big
hands. Is a 2-wire sensor, yellow/blk and lt. green wires, with 1 bolt that holds
sensor in the block.
The 24x sensor is behind the crank balancer pulley. You will need a puller to
remove it then unbolt the sensor.
Either way, you will also need to perform "crankshaft position variation relearn"
If it is not performed, you may get a check engine light. To perform that, you will
need a GM scanner tool.
Back
Dear BL: How do i replace the crankshaft position sensor on
a 2003 chevy malibu.
BL:
That depends on which crank sensor.
The 7x sensor is between the engine and the trans. Hard to reach with big
hands. Is a 2-wire sensor, yellow/blk and lt. green wires, with 1 bolt that holds
sensor in the block.
The 24x sensor is behind the crank balancer pulley. You will need a puller to
remove it then unbolt the sensor.
Either way, you will also need to perform "crankshaft position variation relearn"
If it is not performed, you may get a check engine light. To perform that, you will
need a GM scanner tool.
Back
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Other related questions
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2004 Chevy Malibu
2.2 Ecotec
Check Engine GM Computer codes = Misfire
Repair work done prior = 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
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
2.2 Ecotec
Check Engine GM Computer codes = Misfire
Repair work done prior = 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
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
JK:
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 common.
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
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 common.
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
Chevrolet Malibu Sensor Replace and Misfire