I own a 2.0 dohc efi sierra sapphire, i have changed map sensor, idle control valve, ecu coolant temp sensor, air temperature sensor, leads and plugs, throttle position sensor.
It runs rough and wont take throttle, sometimes it won't start, does anyone have any ideas? I heard theres a specifc way to fit throttle position sensor?

 

Don't throw the parts cannon, it's just stupid.

 

Gotta agree with Stevie here need to work out what's wrong rather then just keep changing parts

Have you worked out exactly why it doesn't start ?

 

As above sadly.. take it to someone who knows about stuff or go through it prop.. when you change aload of parts you end up wasten money and alot of time

 

The haynes manual I linked to will cover a lot of basics to help you learn how things work, and then how to test them