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R33 GTS-T Auto poor idle with A/C on almost stalling

shajar

By shajar,
in Engines & Forced Induction

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shajar Enthusiast

shajar

Posted
Posted

Hey guys, have had a quick search but unable to find any difinative answer to my poor idle problem with the A/C on, will be having a look at the AAC valve - anyone have any other suggestions? Oh am running the stock BOV not leaking and it idles ok with no A/C on!!!

Cheers

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benm Grand Master

benm

Posted
Posted

This probably isn't the best idea but I have been told by a few reputable mechanics/tuners that the "R33 Skylines idle too low for a 10yr old car and should be bumped up abit".

According to my RSM my manual R33 GTS-t used to idle pretty solidly between 640-660rpm. It would hunt every now and then, so I bumped it up to around 740-770rpm and it is 300% nicer when idling/at the lights/etc.

If it costs me an extra $2/wk in fuel big whoop.

Edit: Obviously make sure your Air filter / AFM are clean.

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akeevill Rookie

akeevill

Posted
Posted

Agreed! We cleaned my mate's airflow meter the other night and it worked a treat. As Ben would concur, you may also want to try resetting your computer.

Oh - and clean your AFM with CRC Electrical Contact Cleaner - NOT CRC Carby cleaner! :(

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rs73 Grand Master

rs73

Posted
Posted

Another possibility to consider: My rev hunting problem disappeared after i changed my fuel pump. Turned out my old fuel pump is dying and not supplying enough/stable fuel pressure to the engine, therefore causing it to sometimes hunting for rev or almost stalling on traffic lights or in crawling traffic jam. All happened either with AC on/off (was slightly better with AC off). With the new fuel pump all is nice now.

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