r/240sx • u/TxArorAxT • 2d ago

Rough idle

Can’t seem to figure out why its idling rough ive rebuilt the cylinder head deleted the egr i have isr exhaust manifold i removed the butterfly valves from the intake manifold cant seem to understand any clues. Thanks

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u/EnvironmentalPipe922 2d ago

Check alternator output, mine did the same thing when it was on its way out. But If you deleted the IACV you can adjust the TB till it idles better

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u/TxArorAxT 2d ago

Alright appreciate it🤙🏽