91 240sx KA24de idle 2k, dies when throttled - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

thermogod · 05-18-2023, 09:31 AM

i think he means throttle butterfly, and it 100% sounds like a vacuum issue.

i had a 1700rpm idle and it would die under throttle. I adjusted the two nuts on the throttle cable that adjust throttle butterfly position at idle. this extended the throttle cable a bit, which closed the butterfly a bit more and dropped it down to 1100. this was after cleaning my IACV and using the brake booster hose to do a vacuum leak check (found some uncapped shit from previous owner's EGR delete)... and that vacuum leak was the reason my KA would die when throttled.

i thought i had a leak from the lines under the intake manifold so i removed it, did new gaskets and found a leak under there as well.

just make sure you adjust the throttle butterfly AFTER fixing vacuum leaks

05-18-2023, 09:31 AM	#8
thermogod Leaky Injector Join Date: Apr 2023 Location: away from anything with a roof Posts: 115 Trader Rating: (0) Feedback Score: 0 reviews	i think he means throttle butterfly, and it 100% sounds like a vacuum issue. i had a 1700rpm idle and it would die under throttle. I adjusted the two nuts on the throttle cable that adjust throttle butterfly position at idle. this extended the throttle cable a bit, which closed the butterfly a bit more and dropped it down to 1100. this was after cleaning my IACV and using the brake booster hose to do a vacuum leak check (found some uncapped shit from previous owner's EGR delete)... and that vacuum leak was the reason my KA would die when throttled. i thought i had a leak from the lines under the intake manifold so i removed it, did new gaskets and found a leak under there as well. just make sure you adjust the throttle butterfly AFTER fixing vacuum leaks __________________ *yeah, that's a great steak, but it's not Cypher's steak.* Last edited by thermogod; 05-18-2023 at 10:30 AM..