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Steve Tinker · 10-19-2016, 02:51 PM

I think you may have a faulty new ignition switch - why did you replace the old one?
But here's a couple of other possibilities...

1) There is a clutch interlock switch mounted close to the clutch pedal. Make sure it works or bridge it out temporarily and see if the car starts.

2) CPS (crank position sensor) often fails when hot. If your tach moves when the car is cranking, that's a good sign the CPS is faulty. Use the search function for lots of details.

3) What's the start lock relay? If you are bridging it, it could be faulty. Does the starter solenoid click when you turn the key? If you turn the headlights on, do they dim when you try to start the car - if they don't the starter motor is not pulling power & could be faulty.

4) Can you hear the fuel pump run for a couple of second when the ignition switch is first turned on?

10-19-2016, 02:51 PM	#2
Steve Tinker Registered User Join Date: Dec 2008 Location: Queensland, Australia Posts: 1,522	I think you may have a faulty new ignition switch - why did you replace the old one? But here's a couple of other possibilities... 1) There is a clutch interlock switch mounted close to the clutch pedal. Make sure it works or bridge it out temporarily and see if the car starts. 2) CPS (crank position sensor) often fails when hot. If your tach moves when the car is cranking, that's a good sign the CPS is faulty. Use the search function for lots of details. 3) What's the start lock relay? If you are bridging it, it could be faulty. Does the starter solenoid click when you turn the key? If you turn the headlights on, do they dim when you try to start the car - if they don't the starter motor is not pulling power & could be faulty. 4) Can you hear the fuel pump run for a couple of second when the ignition switch is first turned on? __________________ 2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley. 2001 MV Agusta F4.