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Showing content with the highest reputation on 01/28/2024 in Posts
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A screwed-up mixture might've damaged the cats, or it might just be confusing the sensors, but if the cats were clogged, I don't think a low idle would be your only symptom. I would focus on figuring out the low idle/misfire issue and see if the cat codes go away once the engine is running properly again.1 point
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Best bet is to rebuild an oem one. Check out this post, there's a couple attachments there with great DIY write ups https://www.clubfrontier.org/threads/distributor-rebuild-on-the-cheap-for-1st-gen-nissan-frontier-xterra.350719/1 point
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Not sure my recent woes align with this, but I had multiple air leaks at the o-rings on my fuel injectors due to them being slightly undersized (seemingly my mistake). The excess air would eventually cause the engine to stumble every 30s, regardless of gear selection. RPMs would drop to 600 and engine would run rough. I've also been throwing a P0430, but it's been deemed unrelated to my issues. I threw P0507 and P0171 codes previously, which are what suggested a leak. Dropped $80 on a smoke machine from Amazon and it exploited the issue. The economy is in crisis when baby oil is $10. I also initially thought my issues were alternator related. The original one crapped out back in June and I slapped a cheap replacement in. I had never noticed an issue before the new alternator (I had serviced the injectors a year before), but I have one of those voltmeter pods and it indicated things were healthy (around 14.3V engine running). It sometimes see the voltage drop when the engine stumbled, so had concerns of what was causing what...was bad alternator causing the engine to stumble, or was the engine stumbling causing the voltage to drop? In the end, alternator was not the problem. Other things I had done: Cleaned/moved around plugs, coil packs. Swapped/cleaned MAF (they have aerosol cleaners at parts stores) Checked compression Idle relearn Throttle position relearn PCV check Throttle body clean Obviously none of the above solved anything, but looks like you've done most of those. May be time to check for leaks.1 point