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Hi everyone i have a 1990 vn commodore and it SHIT on fuel. I dont know why i have replaced everything! It only went shit on fuel after i put another engine in it and converted it to manual. I was just wondering roughly how much they charge to do it. I have the gas conversion kit. Its a shit car worth like $500. Im sick of putting fuel in it all the time. I spend more time at the petrol station than i do driving it. I cant afford it anymore. Im in australia aswell if that makes any difference. Cheers.
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Something you might consider. Since you did the swap, did you also replace the computer and wiring harness? If not, this may be why it’s using so much fuel. If the computer thinks it’s running an automatic transmission it’s fuel map would be set up for that. Swapping transmissions like that is not as easy as it used to be for this very reason.
Just something to consider.
[quote=”EricTheCarGuy” post=115394]Something you might consider. Since you did the swap, did you also replace the computer and wiring harness? If not, this may be why it’s using so much fuel. If the computer thinks it’s running an automatic transmission it’s fuel map would be set up for that. Swapping transmissions like that is not as easy as it used to be for this very reason.
Just something to consider.[/quote] Absolutely right! In most cases if not all there is a different PCM programming for manual tranny and a different one for automatic. If you swap in a manual tranny without switching out the PCM in most cases the computer won’t know what to do.
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