97 SL2 Intermittent Engine cut off problems

[Eagle70ss]

So when the car is let to cool, it starts like a champ and idles smoothly. We can sit in the car and when the temp guage inside reaches a point(a little above the 1st 1/4 mark the engine will die and will not start again until the car cools off completely. It will repeat this every time. Like a swiss clock....It always dies at this temp mark on the dash. Driving or idle it's always the same.

When the car enters this no start condition(when hot)...During the cranking to restart, there's no spark to the wires and the fuel pump pressure is zero..

When the car is started...the fuel pump pressure is almost 40 psi at idle.

I'm thinking ECTS(temp sensor)...

any ideas?

Thanks in advance..

[Eagle70ss]

Update::

Changed Coolant Temp Sensor and still have same problem

[Eagle70ss]

Final Update:

Changed the Crankshaft Position Sensor and the problem cleared up immediately...The old CPS that I took out appeared to be a knock off one from a parts house...I put the original Saturn CPS(40 bones) back in and works like a charm..

It takes a 10mm socket for the bolt and I could get most of it from the top...Even though the job would be much easier if one had a lift. It's just above the starter tail in the Engine block(1.9L SOHC engine). I'm a large guy and could still reach around the intake(passenger side) to the back of the engine to remove the bolt(wasn't easy by any means). However a smaller person with skinny arms should be able to do it with ease.



Ron.

[RC1488]

I wish i had seen this post earlier, so i apologize for not. No spark at the plugs during cranking = bad CPS. But its good you changed your ECTS anyway as it can cuase issue later on if it cracks. glad you got your car running!