Originally Posted by
tighed1
Could be the relay control module.
When it won't start, turn the key to the ON position and wait 20 seconds. Does the radiator fan spin up REALLY fast?
Is the spoiler stuck in the UP position?
Dash fault lights?
Are the two relays shown closed with the key in the ON position? How much darker are the three middle relay coils compared to the outer two relay coils?
I just took apart the RCM and found nothing suspect. All the coils look fresh and bright, no sign of dark arcing spots on the contacts and all the solder joints look very good. The spoiler is not stuck in the up position and the fan does not run after 25 seconds. (Of course I'd have to check fan when it doesn't start next time.) I did not check the two relays energized before putting back in car. I did not replace the crankshaft sensor with Bosch OEM sensors. I have no "Check Engine" warning light illuminated. I have ordered Bosch sensors this morning as "most" members suggest is a must. Going to have the battery load tested this morning and the alternator is putting out 14.5 volts.
Side note: Can't see why aftermarket crank sensor should not work as it's just a magnet and inductance coil on the end with two contacts that sends a pulse to the ECM. And it does work as the car starts and runs!