Vicario123 is correct I have the same car the relay by the radiator was bad not allowing any power to the coil, injectors or plugs leading you to think the switch was bad but it is just the relay
SOURCE: my 1996 cavalier Z24 wont start
pull a wire and ground it via useing a screw driver at the end of the spark plug boot to check for spark / if their is no spark / ignition control module / there is also a crank shaft position sensor / located on the back side of the motor under the coil packs / pain to get to / also the nuetral safty switch / to check the neutral safty switch diconnect the big harnest at the neutral safty switch put a fuse tester to the yellow wire / have someone turn the key / with the tester grounded the light should come on / now we know the ignition switch has power going through it. if there is a no power at the yellow wire / bad ignition switch / does the car have a relay located at the top of the radiator core support (up by the radiator looking down drivers side)if it does not gm will install one for free / if there is / look for the purple wire coming out of the relay and Follow it down to the starter / reconnect the neutral safty swtch / touch the small S (the smallest screw) terminal on the starter soilenoid / have someone turn the key forward check the light / this will detemine if the relay is good / CAREFULL NOT to touch the big starter wire with the little one it will jump the starter / I HAVE THE SAME CAR / Hope this helps
SOURCE: 2001 Blazer cranks won't start. has spark and
check the fuel preasure i do believe the injectors need some where between 55-60pounds to work the injectors not enough or to much and they wont shoot. try replacing the fuel filter or chech the preasure alot of the time its the fuel pump even when it's working.
SOURCE: 92 cavalier
if the car crankes and wont start there are a few things you need to have for it to run. spark fuel and timing. check for spark at plugs. check for fuel preasure and injector pulse. if these are o/k then check engine timing. if everything is o/k then you probably have a major vacume leak.
SOURCE: coil pack keeps going bad,
Your problem sounds like an intermittent short in the power feed to the coil pack from the EEC module
SOURCE: 1997 CAMARO TURNS OVER BUTVWONT
the icm, coil, and crank sensor all read off the opti. Chances are you have a bad optispark (distributor). I just went thru the same issue and found it to be the problem.
check your fuel pressure as well, you may have anissue with your fuel pump and or relay
There are some
possibilities which you will have to check in this case:--
1) First of all check
the power and voltage to the battery. With meter it will show exact
12 volt if the battery is charged. If the voltage is less get the
battery charged at local auto repair shop. If the battery is internally drained
and not getting charged then its time to replace the battery.
2) When you crank the
car do you see spark coming at the spark plug? If no then its time to check the
spark plugs and coil pack. If the spark plugs are not worn out and looks new
then its time to check coil pack. The spark plug gets power to spark from coil
pack.
3) The other thing to
check in this case is the starter solenoid of the car. If the battery is
charged and you start the car then it gives power to the starter to start the
car. But if starter is faulty or not connected properly then car will not
start.
4) The other thing to
check in this case is fuel in the car. If there is fuel in the car then check
the blockages in the fuel pump if the fuel pump looks proper then check the
fuel filter above the fuel pump.
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Keep updated if anymore query .Thanks.
5) If all the above possibilities mentioned above checked out OK/perfect then it's a electrical issue and the wiring's in the car needs to be checked. The car gets power from the battery to get started. so the wires from battery needs to be checked one by one.
There are some possibilities which you
will have to check in this case:-- 1) First of all check the power and
voltage to the battery. With meter it will show exact 12 volt if the
battery is charged. If the voltage is less get the battery charged at local
auto repair shop. If the battery is internally drained and not getting charged
then its time to replace the battery. 2) When you crank the car do you see
spark coming at the spark plug? If no then its time to check the spark plugs
and coil pack. If the spark plugs are not worn out and looks new then its time
to check coil pack. The spark plug gets power to spark from coil pack. 3) The other thing to check in this case
is the starter solenoid of the car. If the battery is charged and you start the
car then it gives power to the starter to start the car. But if starter is
faulty or not connected properly then car will not start. 4) The other thing to check in this case
is fuel in the car. If there is fuel in the car then check the blockages in the
fuel pump if the fuel pump looks proper then check the fuel filter above the
fuel pump. 5) If all the above possibilities
mentioned above checked out OK/perfect then it's a electrical issue and
the wiring's in the car needs to be checked. The car gets
power from the battery to get started. so the wires from battery needs to be
checked one by one.
Thanks. Keep updated for any more query. You can rate this solution and show your appreciation
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