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Thread: Help with misfiring W10 92 SE-R. Won't idle, misfires 24/7

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Posts: 21-27 of 27
2011-09-26 01:03:30
#21
Originally Posted by SENTRASER
5/8 hose if you're looking directly at the tb is right lower side of the plenum.


That hose is run from the plenum to just before the TB. I had a nipple TIG welded onto my IC piping so it would get air measured by the MAF. When I unhook it it idles even worse.
Originally Posted by sr20det_GTI
i was having the same problem but cleaned the mainfold of carbon build up out etc found a vaccum leak and changed leads and now runs mint and make sure your fuel filter is round the right way as it can choke it from getting enough fuel and cause it to miss etc

No vacuum/boost leaks, but fuel filter is about a year old. I'll replace that with a 300zx one.
2011-09-26 01:19:12
#22
Check that TB is fully closed at idle. What are plugs gapped at? Boost leak test? That hose is better suited to be hooked up before the turbo but after the MAF.
2011-09-27 02:03:09
#23
TB seems to be closed. Gap is .028. Haven't tested for boost leaks in a year but I don't see why it'd just randomly develop one. And I'm running blow through, I'd have to change to draw through in order to have it before the turbo but after the MAF.
2011-09-27 02:24:26
#24
replace your iacv...

your o2 shouldn't be telling your iacv diddly, correct me if I'm wrong. As a matter of fact when you first fire your car up, your o2 shouldn't be telling the car diddly. You're in open loop when the car is started and in warmup enrichment. You're forgetting what your OP was and bringing too many other variables into the mix. Change ONE thing at a time.
Last edited by nsusammyeb on 2011-09-27 at 02-27-46.
2011-09-27 03:09:21
#25
Already changed it and cleaned it. Tried 3 different ones
2011-09-29 03:16:33
#26
Just so we get this strait....when you swapped to calum ECU, it instantly started to run crapy?
2011-10-07 16:01:39
#27
It's gradually over time gotten worse. I thought it was just a shitty tune on my calum basic, so I bought a Calum RT. Didn't fix the problem but at least it started throwing codes. I didn't know where to start looking before. I'm gonna do a compression test soon as I get the gas tank back in the car
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