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Rb26 Misfire

KN6_GTR_VSPEC

By KN6_GTR_VSPEC,
in Engines & Forced Induction

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KN6_GTR_VSPEC Enthusiast

KN6_GTR_VSPEC

Posted
Posted

Guys I have a random misfire that popped out of know where !! I was driving on m4 last night and she was running great!! Then pulled into caltex near Blacktown filled up around $30 and turned car on and was sounding like a WRX . Check for loose contacts but all fine .

Went from there to Liverpool Krispy kernes , had a play sround resetting ecu and checking afms , no luck !

Proceded to head home via a mates house and as I left to drive back to penrith she came good all of a sudden , power was back and she was running 100% . Went on national park run with guys and no hiccups .

THEN just about 20 mins ago driving fine . Went to get a coffee . Turned it back on and it was doing it again!? So I took it home . VERY important I get this fiXed ASAP because car may be sold as of tomorrow unless this issue roots me over ;( car is very looked after and only use best of everything and regular service ?? I'm confused

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SiR_RB Grand Master

SiR_RB

Posted
Posted

Mine did the same thing when afms were stuffed. Was missing and running like crap, turn the car off wait afew mins then restart it again and it was fine for maybe 15mins or so until it started playing up again.

Changed them and no probs ever since

Try give them a clean

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GTR_JOEY Grand Master

GTR_JOEY

Posted
Posted

Won't be coil or ignitor... They're good when they're cold but once they warm up and build resistance they will continue to miss fire as long as there is heat in them...

I'd be getting a second set of afms and swapping them in... Cleaning generally doesn't do a whole lot but wouldnt hurt to try

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GTR260 Proficient

GTR260

Posted
Posted

Do u know someone with a consult cable? They are $88 on ebay, chances are it will be air flow meters but consult is a good way to confirm it,

My car is doing the same thing, checked it with a mates consult and confirmed it was afm's. Just dealing with it until i put the 35r on as i have a haltech platinum pro which is going in and will be running on map sensor

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naga Collaborator

naga

Posted
Posted

Sounds like a problem with the ignitor. I bought some aftermarket s2 coilpacks (transistor built in). One of the coils/transistors died and would short circuit and consult would throw a code 21 error code. Would happen for 2 minutes when the engine was warming up then be fine for the rest of the drive. I eventually bought nissan datascan and waited for it to happen again and turned off cylinders to find out which one it was. Replaced it and never happened again.

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