Jump to content
SAU Community

Rb25det Running Bad

Aif

By Aif,
in Engines & Forced Induction

 Share

Recommended Posts

Aif Collaborator

Aif

Posted
Posted

the other week queensland finaly got some rain and my car ran like crap, so i put the stock air box on and it was ok after a while. this weekend again, rain, car ran crap, but now that the rain is gone it still sounds like not all cylinders are fireing properly (my RB sounds like a subaru), My cousin said it sounds like maybe my plugs are gone (copper plugs changed 1 or 2 months ago when tuned) or my coils are shagged. does it sound like it would be my coils plugs AFM or something else.

-AIF

Link to comment
https://www.sau.com.au/forums/topic/174471-rb25det-running-bad/
Share on other sites
SXR Rising Star

SXR

Posted
Posted
the other week queensland finaly got some rain and my car ran like crap, so i put the stock air box on and it was ok after a while. this weekend again, rain, car ran crap, but now that the rain is gone it still sounds like not all cylinders are fireing properly (my RB sounds like a subaru), My cousin said it sounds like maybe my plugs are gone (copper plugs changed 1 or 2 months ago when tuned) or my coils are shagged. does it sound like it would be my coils plugs AFM or something else.

-AIF

Have you got vents in your bonnet?

turbs33 Community Regular

turbs33

Posted
Posted

man i had similar thing happen during the rain.. idle seemed to fluctuate arround 750 rpm instead of the normal 650 rpm.. I too using copper plugs which have down about 5000 - 7000 k's (first time ive used coppers in my skyline) migth just be coincedence ???

Aif Collaborator

Aif

Posted
  • Author
Posted

no vents on the bonnet, but the machanic that came out to check it out said he could hear the spark escaping and that it was shitty coils, and that they may have worked fine when it was dry but as soon as any kind of moisture was in the air BAM, i'd loose spark.

so im just waiting for my splitfire coils

yay

AIF

black_gtst Proficient

black_gtst

Posted
Posted
no vents on the bonnet, but the machanic that came out to check it out said he could hear the spark escaping and that it was shitty coils, and that they may have worked fine when it was dry but as soon as any kind of moisture was in the air BAM, i'd loose spark.

so im just waiting for my splitfire coils

yay

AIF

yeah dude will prob be your coil packs, wen it rains air gets bit colder and will mis-fire and carry on cause spark is escaping. try pullin coil packs off and wrapping some heat resistent electrical tape round em, if that helps it time for a new set of spit fires coils!

cheers

Aif Collaborator

Aif

Posted
  • Author
Posted

thanks for your replies guys, i got a set of split fires from SLIDE and when i was installing them i found that there was close to half a f%*king cup of water drowning the coil packs and s/plugs,

yeah i know what your thinking. (WTF)

where i live i park in a rather steep driveway and when it rain for a few days tyhe water ran down my car and flowed over the part where the wipers are, into thew engine bay and into through the coil cover,

i should have taken some pics for you guys, the water finished just below the bracket that u screw the coils into, between the 2 cases.

thanks again,

Aif

lineskee 33 Community Regular

lineskee 33

Posted
Posted

sounds like your getting water into your intake. i have had that on my car when i go through big puddles. i have a hole under the pod filter where i think the stock intercooler went, and the water heads up through there into the air filter. makes the car run like s**t for a while.

MotoMan Rising Star

MotoMan

Posted
Posted
sounds like your getting water into your intake. i have had that on my car when i go through big puddles. i have a hole under the pod filter where i think the stock intercooler went, and the water heads up through there into the air filter. makes the car run like s**t for a while.

I think if you had bothered reading the thread you would have realised he figured out what the problem was

either way good to hear its fixed

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • The Bogan
      Torana Lx Gtr Hatch, Lots Of Pictures

      By The Bogan · Posted

      LOL, when one "money pit" is never enough Noice, and excellent work mate
    • The Bogan
      NC MX5

      By The Bogan · Posted

      I have more than enough digging, laying blocks, moving gravel, airrating, feeding and top soiling the grass, and setting up the veggie gardens growing some seedlings,  and then removing all the unused rock to keep me busy for the next few months at least,  hopefully the rain stops soon so I can get a few hours in this arvo, but, before that Sunday is washing day, is every body happy, you bet your life we are Nice country road day drives are a day off whenever I'm muscle sore from all the landscaping at the moment, but, more epic multiple day drives will start once the majority of the big jobs outside are completed
    • MBS206
      NC MX5

      By MBS206 · Posted

      I hear that would involve some nice country road drives into the hills for Mark...
    • MBS206
      Recommendation for engine oil funnel spill free

      By MBS206 · Posted

      I thought I'd come back and add something I JUST learned. A Toyota LandCruiser with a 1HZ, mates perfectly with a bottle of Nulon brake fluid. As in, it perfectly screws in. Great make shift funnel when you cut the bottom of it off. This may work for your Corolla.   Unfortunately, tipping a 10L drum is much harder than a 4 to 6L bottle, and they no longer include the easy pour tap which was just perfection to use previously.  
    • EndZee
      Fuel Pump Control Module & Dropping Resistor

      By EndZee · Posted

      Guys since i bought r33 gts25t coupe 1994 automatic a/t(manual swap 350z gearbox)  all i got is problems, always problems. Lets start with that when i turn key into ignition(ON) fuel pump doesnt always works. Sometimes i have to turn key twice Off/on/off/on until it primes. Its new, dw300 - 340lph. My gearbox broke so i did gearbox swap, install different intake manifold, injectors and i take pipes. Car was sitting in garage for more than half a year. I did assembly all not that long ago and when i turn ignition cant hear prime. All of sudden it stopped working. Theres many videos on YouTube how to make relay mod on r33 straight from battery so i did and it doesnt work! 😰 30 - battery positive  87 - positive from fuel pump to relay 85, 86 - one of two wires from original fuel pump wires(light blue, grey) and it didn’t work. so I check on ignition and took original BLUE relays wires from trunk, next to fuses. (I believe it’s IGN+ and ECU pin 18. it didn’t work…  tried connecting (IGN+ from og relay) and (ECU 104 from 1of4 FPCM wires) to my new relay 85/86 and it didn’t work.  I unplug FPCM. Didn’t work. im thinking what’s wrong   fuel pump is working, if I leave IGN+ on 85 and 86 straight to ground it works but it’s just nonstop. Since it getting constant 12v after key in ON. light blue wire gives me 6-8v.  so how this should be connected? What causing ECU not giving — on pin? Or I did sth wrong and that’s why it doesn’t work? I need negative signal on ECU that control fuel pump. What this should be?
×
×
  • Create New...