check engine light 43

General engine questions/issues that aren't specific to the other categories
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check engine light 43

By asianrob
- Fri May 30, 2008 4:59 am #57046 ok its fuel system supply

story:
car feels like its not getting enough fuel or its leaning out i guess... point being that is not driving normal it was sluggish unitl i replace a few things on it and then check the check engine light ( i havent checked it before because it would go away after i turn off the car but realized it would still show up if i jumped it )

how do i go about fixing this?

done
fuel filter
fuel pump
MAP Sensor
IAT (car runs and idles a little better when i replaced the map an IAT)
switched ECU
Check plugs, wires, injectors, Cap, rotor, coil

i am compleltely clueless of what to do now

It'll drive ok but it wont let me hit redline
when it gets close it feels like its losing power around 55-6K
any help appreciated
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By asianrob
- Sat May 31, 2008 7:16 am #57135 anyone?....
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By teal_dx
- Sat May 31, 2008 1:16 pm #57140 fuel pressure maybe? do you have aftermarket or oem fuel press regulator?
I've never heard of an oem one going bad... but I guess it could happen :?
Do you have a fuel pressure gauge? They're cheap, might be a good thing to check.
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By Gorveatt
- Sat May 31, 2008 1:36 pm #57143 Sorry rob i searched around for that error code and i couldn't find anything :(

but i would check the FPR like Brian said
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By asianrob
- Sat May 31, 2008 1:59 pm #57144 havent tried that yet i'll give it a shot, i got one but i think it doesnt work lol but i'll try that and another one. oh and ya i got stock fuel rail only things that are not stock is an AEM intake for a GSR and an exhaust
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By suspendedHatch
- Sat May 31, 2008 3:04 pm #57145 Did you reset the ECU after changing those sensors?
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By asianrob
- Sun Jun 01, 2008 2:27 am #57197
suspendedHatch wrote:Did you reset the ECU after changing those sensors?


i should have but no... lol but when i tested it out after that it drove fine untill i let it sit over night then it would go back to being the same...
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By asianrob
- Mon Jun 02, 2008 2:55 am #57266 i reseted the ECU and it drove ok and the check engine light doesnt appear anymore...

but it cuts out a 6500 now... instead of 6900...
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