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need help with check engine code 43 (fuel supply system)

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Old 04-28-2009, 11:33 AM
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Default need help with check engine code 43 (fuel supply system)

I need some help if any one can help, thank you for any input. It is a stock 94 delsol, code 43 (fuel supply system) only comes on after the car been driven for about 5 minutes or so.

Any idea of how to fix this?
thanks
Old 04-28-2009, 11:34 AM
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Default Re: need help with check engine code 43 (fuel supply system)

your fuel pump is out of ***
Old 04-28-2009, 11:44 AM
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Default Re: need help with check engine code 43 (fuel supply system)

get a walboro and throw it in and check your wires and relay
Old 04-28-2009, 12:20 PM
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Default Re: need help with check engine code 43 (fuel supply system)

Originally Posted by tnxx
I need some help if any one can help, thank you for any input. It is a stock 94 delsol, code 43 (fuel supply system) only comes on after the car been driven for about 5 minutes or so.

Any idea of how to fix this?
thanks
If the engine performance is otherwise fine, then code 43 more likely indicates a problem with the O2 sensor or its circuit.
Old 04-29-2009, 07:16 AM
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Default Re: need help with check engine code 43 (fuel supply system)

thanks for all the helps.
Old 05-29-2009, 07:57 AM
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Default Re: need help with check engine code 43 (fuel supply system)

Originally Posted by RonJ@HT
If the engine performance is otherwise fine, then code 43 more likely indicates a problem with the O2 sensor or its circuit.

My car is throwing code 43 and 41 (also its a z6). The car will almost always die instead of idling, but will always fire right back up. It seems like the power it is supposed to have is there once you get going but sometimes it stutters at take off. Any advice/help would be greatly appreciated.
Old 05-29-2009, 08:28 AM
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Default Re: need help with check engine code 43 (fuel supply system)

Originally Posted by white94sihatch
My car is throwing code 43 and 41 (also its a z6). The car will almost always die instead of idling, but will always fire right back up. It seems like the power it is supposed to have is there once you get going but sometimes it stutters at take off. Any advice/help would be greatly appreciated.
If you are having significant performance problems with code 43, then measure the fuel pressure with and without the FPR vacuum hose attached.
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