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Old 03-05-2014, 06:16 PM   #1
92R32GTST
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Rb20 misfire!
Rb20 misfiring on back 3 cylinders with newer coil packs.. It's not the coil packs I already checked. Also revs veryyyy slow. Rich and pops, idle around 1k. Would rb25 maf cause this? (Green label). Thanks guys, I already searched btw and everyone else had slightly different probs.


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Old 03-09-2014, 03:53 PM   #2
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Bump, Ignitor? Still misfire. Brand new coil pack harness


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Old 03-10-2014, 03:22 AM   #3
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check your TPS, CAS and MAF
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Old 03-10-2014, 06:43 AM   #4
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Would a maf cause this it to idle and rev real sluggish?


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Old 03-10-2014, 07:02 AM   #5
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Yes, but my question is your car run find before? Do you check fuel pressure spark plug? RB25 and rb20 maf s1 is the Same. Check your intercooler pipes.
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Old 03-10-2014, 07:04 AM   #6
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I don't think it's s1 maf though lol it's a green label. Kid wasn't brightest. At times it would wanna run ok but would break up like fuel cut up top and then would fall back into subie mode. A little free rev and she would run ok again till you jumped on it under a load.


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Old 03-10-2014, 07:07 AM   #7
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injectors maybe?

back 3 are on a sub-harness...
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Old 03-10-2014, 07:08 AM   #8
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Back 3 cylinders are missing. I just bought injectors already has a brand new harness so we'll see if this Ignitor and injectors wirk


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Old 03-10-2014, 07:08 AM   #9
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injectors maybe?

back 3 are on a sub-harness...
Maybe you have A/F gauge?
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Old 03-10-2014, 07:11 AM   #10
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Don't have a wideband hooked up


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Old 03-10-2014, 07:16 AM   #11
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Don't have a wideband hooked up


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So how do you know the car run rich?
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Old 03-10-2014, 07:22 AM   #12
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Black plugs and stinks like gas


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Old 03-10-2014, 07:31 AM   #13
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Black plugs and stinks like gas


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Ok Before you going crazy, you going to have to start from the beginning, check your fuel pressure 42psi, reset You ecu, check your plugs, turbo pipes
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Old 03-10-2014, 07:38 AM   #14
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Isn't there a certain way to reset the ecu? You can't disconnect battery? New to rb ecu's p


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Old 03-10-2014, 07:49 AM   #15
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Isn't there a certain way to reset the ecu? You can't disconnect battery? New to rb ecu's p


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Yep disconnect the battery and step on the brakes for 2 min, in my car do the trick.
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Old 03-10-2014, 08:01 AM   #16
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Lol ok. I appreciate the information to guys that's awesome. When I get home I'll reset the ecu. Also I noticed the red led on ecu blinked 5 slow times followed by 5 fast blinks. Code (55) but that code came back to meaning it was running good? Lol


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Old 03-10-2014, 08:07 AM   #17
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I'd pull the plugs and make sure they're gapped correctly. Or get rid of the RB20 completely, the thing is a boat anchor and worthless :\
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Old 03-10-2014, 08:19 AM   #18
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I'm bias with rb I'll hang on to it lol. I already have rb25 swapped 240z lol. Plugs all gapped at .08


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Old 03-10-2014, 08:22 AM   #19
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JESUS, .08?!?!? Is it boosted?!
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Old 03-10-2014, 08:27 AM   #20
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I'd pull the plugs and make sure they're gapped correctly. Or get rid of the RB20 completely, the thing is a boat anchor and worthless :\
I respect your opinion, just to let you know I have my rb20det for The pass five years with the precision 6262 500hp on 23psi and I never have a problem. But that me.[IMG][/IMG]
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Old 03-10-2014, 08:31 AM   #21
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I respect your opinion, just to let you know I have my rb20det for The pass five years with the precision 6262 500hp on 23psi and I never have a problem. But that me.[IMG][/IMG]
No no don't get me wrong, the motors are tough but the on I had only had power at 5-6k+ rpm. They're just way too heavy to justify the weight of it and amount of power it made
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Old 03-10-2014, 08:50 AM   #22
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That's awesome^ 6262 all day!


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Old 03-10-2014, 01:27 PM   #23
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It's a rb20det so yes lol.


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