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What's Wrong With My R33? Please Help!

AlexR34GT

By AlexR34GT,
in General Maintenance

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AlexR34GT Contributor

AlexR34GT

Posted
Posted

I have a 1993 R33 Gtst series 1 which I bought in June, the engine and ecu are completely stock (hard to believe I know) and the car runs completely fine... most of the time. About once every few weeks it will have a spasm and will not let me go past 2 and half rpm on any gear and jerks violently as if the revs are too high and just cuts the accelerator power once it tries to go past 2 and half rpm.

I am thinking along the lines of something to do with the turbo or maybe AFM, I was just wondering if this has happened to anyone else or if it is a common problem and if someone could offer me some ideas with with how to fix this problem.

Any help/ ideas/ input would be appreciated.

I have 2 videos I recorded today of this occurring but am unable to upload it as it is in mp4 format and am not sure how to convert it so it can be uploaded.

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SargeRX8 Grand Master

SargeRX8

Posted
Posted

Sounds like an afm issue especially and the lower spectrum of the rpm. If you're handy with a solder you can crack it open and soldier all the joints inside it. Its not likely the element is damaged but more likely there's a cold solder in there. If that doesn't fix it then it might be a long road.

89CAL Grand Master

89CAL

Posted
Posted

OP, post up a pic of the inside of the AFM if you want some opinions. The top of the box part is just glued on, bit of mucking around with a knife etc to get it off but not so hard. Should be able to see the problem if it needs a joint or 2 resoldered

Mick Mentor

Mick

Posted
Posted

it could be surging due to clogged injectors, run a $10 bottle of injector cleaner through your tank, fixed mine with similar problem and even if its not the problem at least you will have clean injectors

Mick Mentor

Mick

Posted
Posted

if it is the afm you may not see an obvious fault in the circuit board cos it could just be a dry solder joint so just hit each pad with the iron to make sure the pad is good, but i still think you should try injector cleaner cos it fixed my similar problem

AlexR34GT Contributor

AlexR34GT

Posted
  • Author
Posted

No it's not a burn hole, its just glue.

So I ended up just re-soldering the 4 connection pins which you can see in the 3rd photo because I could see one of the pins looked like it wasn't connected properly. Hopefully this fixes the problem but it will be hard to tell because it was a rare occurrence in the first place.. so time will tell.

I like your idea of injector cleaner too Mick, I might do that as well since it's cheap and can't hurt by giving it a go also.

Thanks for your help gents, I'll let you know how it's going in a few weeks time.

  • 2 weeks later...
AlexR34GT Contributor

AlexR34GT

Posted
  • Author
Posted

After re- soldering those 4 pins in the AFM I've been driving around Sydney quite a bit and the other day I drove Newcastle and back. My problem is fixed!

Thanks for the help!

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