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Rb25Det Major Idle Problems

RU55SH
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RU55SH Rookie

RU55SH

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hey everybody..

I have a 1994 r33 gtst and I'm having a major idle problem.. idles fine while it's cold but once it warms up it starts hunting up and down, comes up to about 1200-1500 rpm then drops to almost nothing :/ car shudders an shakes and just about stalls.. also noticed that when i drove it up the street and back it did not like to get up on boost, was very hesitant.. did boost but was hesitant! I have cleaned the AAC valve about 3 times, cleaned the afm, changed the plugs, checked for vaccume leaks ( pretty sure there aren't any ) put new fresh caltex premium fuel in it but it still hates me.. checked the error codes and got 55 which I'm led to believe means all ok..

mods that are done is just an Apexi cat back, plasmaman front mount and hks bov.. also read that alot of people have trouble with aftermarket bovs so put stock one back on..

have searched and searched but can't seem to find much except cleaning the AAC valve etc which hasn't helped so i hope someone here may be able to help.. would love to be able to drive again.. thank you

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RU55SH Rookie

RU55SH

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ok i will check cooler pipes again and vac lines.. will have to have a look on here about the tps and ignition timing as not too sure about it.. can the tps or ignition just suddenly change or stop working properly..

thankyou for the reply aswel

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