RB20DET surging between 1500 and 2000 rpms
RB20DET surging between 1500 and 2000 rpms
last 2 problems before swap will be complete. Surging between 1500 to 2000 rpms and as soon as BOV opens (9 psi) motor starts missing (slight backfire through exhaust). I have upgraded the fuel pump ,filter, replaced the O2 sensor, checked and replaced vacuum lines to no avail. Any help will be much appreciated.
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Cpt_Impossible
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Cpt_Impossible
- Posts: 488
- Joined: Thu Jul 06, 2006 8:03 pm
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Re: (Cpt_Impossible)
Like the 240sx forum reads, 255 fuel pump, no fuel pressure regulator. Thats next. The BOV is stock.
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mott6904
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Re: (foulplay)
Did you ever get your surging problem fixed. Mine also surges around the rpm. Ive scooped the tps and crank angel sensor. They grafted fine, but my problem is still there.
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AxiOn419
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Re: (mott6904)
Is your BOV recirculating or is it atmospheric?mott6904 wrote:Did you ever get your surging problem fixed. Mine also surges around the rpm. Ive scooped the tps and crank angel sensor. They grafted fine, but my problem is still there.
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mott6904
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- Car: rb20 big turbo big cams s13, 97 kouki, turbo audi a4,turbo busa
Re: (AxiOn419)
Atmospheric, but it doesnt happen when i letting off the gas just when i cruising. I have iridium plugs that gap to 1.1. so im going to switch them to some cheap ngk i have and gap them to .8 and go from there. Any suggestions would be helpful