1999 CHEVY S-10
2.2 Ecotec
CHECK ENGINE light
codes = FOR CRANK POSITION SENSOR
work done prior = HAD TO REPLACE TIMING CHAIN, GEARS AND
TENSIONER
TENSIONER CAME APART I CLEANED OUT THE OIL PAN
work done to repair = CLEANED CRANK POSITION SENSOR BUT IT STILL
SHOWS
A CODE CLEANED THE CAM SENSOR BUT MY TRUCK STILL MISFIRES
CHANGED
PLUGS AND WIRES AND CHECK THE COIL PACK
tech = JK
question = THE TRUCK WILL NOT MISS FIRE IF I EASE ON THE
THROTTLE OR
KEEP patting THE THROTTLE WILL THE CRANK SENSOR CAUSE THIS
JK:
A crank or cam sensor would not cause the problems you describe. It does
sound as if the timing is off a tooth or more. That would give crank / cam
sensor codes, and the acceleration problem you are describing. Check to
be sure the timing chain and gears are timed properly.
It is also possible that a valve (s) may have gotten bent when the chain and
tensioner broke. The higher the engine speed when it broke, the higher
the possibility that a valve hit a piston.


Question: I have a 2000 S-10, 4cyl. 2.2 liter engine. On days when it isn't cold and wet, damp,
or just moist, the truck will not start on it's own. On days when it is sunny and that the this
cylinder was not firing properly. Today it is cold and raining and now the truck won't start.
Sometimes it seems like it might turn over and at times there is barely, it starts with no problem.
I have replaced the coil pack for the 3rd cyl. because a diagnostic check said any contact.
What is the problem.
Answer: Could be a bad ignition module, or even bad spark
plug wires causing your problem. Since it happens mostly when
it's damp outside, that usually affects the ignition system on
starting problems. A good way to check, is to spray down the
ignition wires, coils, and module with water while trying to start
the truck or while it is running to check and see if you can get it
to act up. That might help lead you in the right direction,
especially if you can see wires arcing, etc. You may also want
to check out the crank sensor, as that can cause an issue like
the one you're experiencing if it is faulty. If the check engine
light is on, get those codes so you can aid in diagnosis too.