I am trying to find the crank sensor on a pontiac sunfire 98

It does have a crank sensor. Here is a picture for location

This is most likely your crank position sensor.... it sits behind your harmonic balancer and tells the PCM what position the crank shaft is at at all times. These sensors aare around 30 dollars at a local parts shop but you will need a pulley puller and a good impact wrench to remove the balancer

Yes it would and will make the car not start. Your crank sensor is located behind your harmonic balancer, which is the large pulley that turns all the belts. THe one that is coming off the crank shaft.

there is still more to check. like the mass air flow sensor, the whole fuel line cleanout, and if its an auto it does have a camshaft sensor. its located into the transmission.

the crank position sensor is located to the back of the engine to the left of the oil filter, it is right next to the oil filter on the back side of the engine. hope this helps. Please rate my fix as i strive to be the best. need more help, get back to me Thanks Ray

There is a plug located on top of the transmission under the brake master cylinder. It is held in place by a bolt on the side of the transmission near the firewall. Remove the bolt, then remove the plug. Fill it until the fluid comes out of the hole.

Hello oldiro: My name is Roger and I can help. From under the vehicle look up between the transmission and the side of the block. Mid motor above the pan rail there is a bolted in sensor. This should be the crank sensor.It will have two wires plugged in to it. Please rate this answer as this lets us know you received the information you asked for. Should you need further help please just ask. Thank You for using FixYa. Roger

Look at the top of the engine block below the intake manifold. There you should find the knock sensor wherethe throttle cables connect to the throtle body, reaching it from underneath, and bolted to the top of the motor with a wire connctor, below comes a picture:

This is Caused by the Fuel Pump. If you remove the Fuel Pump relay and it will try to Crank, You have a Bad Fuel Pump. I do Believe that the Fuel Pump is located inside the Fuel Tank on the Sunfire. Not an easy Repair But, Necessary

if check engine light comes on may be crank position sensor or ur injectors r clogged try some chevron injector cleanor it helps when injectors clogged makes it run smoother