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R33 Idling Problem

Starionturbo
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Starionturbo Mentor

Starionturbo

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Posted

Today out of the blue, my car started idling funny, Ive never had this happen before on any of my other skylines, but it kinda sounded like I had rotational idle/lumpy cam. It also mysteriously brings the revs up high when they get really low down. On power, the car goes hard and seems fine.

I made sure all the coilpacks were in properly, however I have a feeling it could be spark plugs. But if it were spark plugs, wudnt the car drive like a bucket when i put the foot down? I checked the vac lines and it seemd fine as well.

Please help guys.

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siddr20 Grand Master

siddr20

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It could be also charcole canister.. I had same problem at idle with revs going all over the place (max 1500rpm), until i changed my charcole canister..

It did fix the problem however once in a blue moon, it still does it..

But then i think its something to do with my turbo-timer as well!! when i arm or turn off the car the revs jump all over the place.. but only in a blue moon now..

DanR33 S2 Rookie

DanR33 S2

Posted
Posted

Hey guys i only recently bought my skyline and have had this problem now since ive had will clean the connectors on the air flow meter and hope that fixes it!

Everyone on the site that makes there input has helped so much (eg. stereo install, turbo timer, gauges, etc.) and its good to see that everyone helps eachother out.....

If I have a prob this is the best resort!

Cheers,

Dan

:P

DanR33 S2 Rookie

DanR33 S2

Posted
Posted

Oh ok sweet I used throttle body cleaner in it today and it worked a treat! But now the car is missing a little bit on idle (like every ten to 15 seconds just pings a bit) but i guess its the fuel system. Some injection cleaner should do the trick!

Cheers

INASNT Grand Master

INASNT

Posted
Posted
I have an HKS Electronic Idle Stabiliser for sale if you want it? It's used, but in 100% working condition.

HKS idle stabliser only helps when you have a big turbo and coming off throttle the afm sees different afm signals and causes the idle problem. The stabliser just changes that signal to a stable decreasing one to stop the idle problem.

It wont solve any other idle problems.

I have a cold start airbypass valve problem that keeps my idle at 1500rpm most of the time as the spring has come off the cold start bypass which keeps the revs up when the cars cold. Its a bastard to get to on the rb25 so i havent bothered to fix it yet since i hardly drive it now anyway.

ross80 Rising Star

ross80

Posted
Posted

thats what i hate about my f**king 33!

Its never right and its always 1 of a 1000 f**king things that could be wrong!

My dad is a mechanica and he hates the f**king thing!

Does anyone actually report that there 33 is fine and they dont have many dramas?

f**k me!

Starionturbo Mentor

Starionturbo

Posted
  • Author
Posted

OK,

I cleaned AFM, new spark plugs, new fuel filter.

Nothing, still does it, however When i was hammering it It would fix itself sometimes. It still is just as powerful and goes hard.

Its intermittent.

I dont know what to do, is it a air leak, coilpacks, vac leak its doing my bloody head in.

Starionturbo Mentor

Starionturbo

Posted
  • Author
Posted

Ive tried dissconnecting the coil plugs on at a time and all that does is drop that cylinder and make it sound like a WRX.

Its just got a bad idle, sometimes like Rotational Idle, sometimes just lumpy.

I havent tried the cleaning the AAC valve yet, you think this is causing the problem?

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