help! running rough at idle

[starfire vc]

ok my vl rb30 is mising at idle. ive replaced the crank angle sensor, oxygen sensor, coolant temp sensor and air flow meter. iam outa ideas. it seems to get worse once u put it into drive.but goes fine when driving. allso wont start 1st hit. what else could be causing the problem. this is really frustrating me. any help greatly appreciated

[Not_An_Abba_Fan]

Is your plug on the AFM nice and snug? No air leaks around the intake anywhere?

[starfire vc]

yea plug seems all good . not coroded or anything. as for air leaks, bothe the couplings on the induction pipe shud be right. ive had em off and checked em and retightened them. there cud be an air leak from the throttle body bak. but it doesnt seem 2 be the same missing as u get with an air leak.

[mag]

ok my vl rb30 is mising at idle. ive replaced the crank angle sensor, oxygen sensor, coolant temp sensor and air flow meter. iam outa ideas. it seems to get worse once u put it into drive.but goes fine when driving. allso wont start 1st hit. what else could be causing the problem. this is really frustrating me. any help greatly appreciated

Check the error codes on the ECU first

[starfire vc]

Check the error codes on the ECU first

ive done this before , but iam not sure if iam doin it right? whats the drill 4 checking error codes ?

[spacattack]

might sound stupid but you didnt mention it above, have you checked the leads? spark plugs?, fuel filter? tested the fuel pump?

[mag]

ive done this before , but iam not sure if iam doin it right? whats the drill 4 checking error codes ?

TO CHECK ERROR CODES:
1. remove screw retaining the passenger side kick panel
2. turn the diagnostic mode selector fully clockwise to diagnostic
3. start the engine and let it idle
4. watch the LED's flash (red and green), the red represents tens and the green represents ones (so if the red flashes twice and the green 4 times, thats 24). 14, 23, 24, and 31 should show
5. drive the car above 10km/h, this will cancel code 14
6. stop the motor and then turn the ignition to the on position
7. press the accelerator, this will cancel 23
8. put the car in neutral, then back into another gear, then back to neutral. this will cancel 24
9. turn the air con on, then off this will cancel 31
10. look at the codes that are now displayed, 31 means you dont have air con or its not working and 44 means your air con is working.
11. any other codes displayed besides this means there is a fault in that section
12. turn the diagnostic mode selector back full anticlockwise then turn the ignition off.
13. erase the memory by turning the ignition on, then moving the diagnostic mode selector fully clockwise for 2 seconds, then fully anticlockwise for 2 seconds. turn the key off and the memory is now cleared

CODES ARE:
11 Crank angle sensor circuit
12 Air flow meter circuit
13 coolant temperature sensor circuit
14 Vehicle speed sensor circuit
21 ignition signal circuit
23 throttle switch circuit
24 neutral switch circuit
31 satisfactory operation (non air conditioned models) air conditioner circuit (air conditioned models)
32 starter signal circuit
34 detonation sensor circuit (turbo models)
44 satisfactory operation (air conditioned models)

[starfire vc]

hey cheers mate. ill hav a good look into it this weekend .atm iam just puttin up with it