Out of my depth

[SBpt]

Hi all, first time posting here and I could really do with some help please.

My Lexus is200 (2001) was jump started a couple of days ago, after sitting dormant for a while, but the person who did it had connected the cables wrong and it was obviously completely unresponsive.

I've changed the 120a fuse which had blown (never again I hope, what a nightmare!)

Now the car is turning over but not starting. At the point of start it makes a really strange noise, a bit like a whirring and then just conks out.

If anyone has any suggestions I'd be really grateful. Hoping it's just another fuse or 2 that needs to be replaced but I know that's probably quite optimistic! Just really hoping it hasn't fried the ecu.

Thanks:)

[Herbie]

36 minutes ago, SBpt said:

At the point of start it makes a really strange noise, a bit like a whirring and then just conks out.

I'm a bit sceptical of coincidences but when you say "a bit like whirring and then conks out" does it sound like in the video below?

If so, it may be worth watching the video from the start - it would appear to be the starter motor at fault.

 

 

[SBpt]

That's exactly the sound! Cheers for that, it was difficult to explain.

[Herbie]

1 hour ago, SBpt said:

That's exactly the sound! Cheers for that, it was difficult to explain.

Oh well, good that it may have helped you but bad in that the motor looks like it needs replacing. It may be worth looking on YouTube for other videos that demonstrate the sounds of a failing motor, just to confirm, before spending money - starter motors aren't exactly cheap things.

[ColinBarber]

Have you checked all the other fuses in the engine bay and footwell? Are all of the electrical systems working and immobiliser light going out?