1990 240sx ka-t wont hold a idle

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300datsun
Posts: 3
Joined: Wed Oct 29, 2014 10:10 pm
Car: 1988 nissan 300zx
1990 Nissan 240sx

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Trying to finish my project I can't seem to find any solution anywhere on the internet and I'm not trying to throw anymore unnecessary money at it I have a ka-t sohc that won't hold idle the computer is flashed to what's equipped which consist of
300zx maf-eBay intercooler and master power t70 turbo-tial bov with waste gate- 550 Bosch fuel injectors-walbro fuel pump -custom made exhaust manifold with downpipe.
Its has the iav and egr valve deleted covered with plates and 02 sensor deleted
What exactly is happening is ill turn the car over and unless the maf is unplugged it dies within 5 seconds I've tried other mafs that work on my 300zx so I know the problems not there and its getting fuel and spark so the only thing Is air flow don't have a smoke tester to find a vacuum leak and I can't visible find one any help will be much appreciated :facepalm:


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WDRacing
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Posts: 15983
Joined: Mon Nov 25, 2002 2:00 am
Car: 95 240SX, 99 BMW 540i, 01 Chevy Express, 14 Ford Escape
Location: MFFO
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When you unplug the MAF it starts and idles fine? Do you have a wideband O2 meter? How was the O2 sensor deleted? Brand ROM Tune?


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