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Stuttering: Here Was My Answer

arbess

By arbess,
in General Maintenance

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arbess Experienced

arbess

Posted
Posted

If you have any questions about the details of how I checked for things, don't hesistate to ask. It would just be too much for me to write it here now.

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Ok ok here it is, I will keep it short and sweet because it has been such a long tale that I don’t ever want to re-live.

Stuttering. My car had been doing this for around a year and a half. It has been this long because I don’t drive it and I don’t really have the time to fix it, not to mention the cash it would take to send it away.

At first the car would stutter when more than, let say 50% of the throttle was applied. Under this amount the car was fine with no evidence of a problem. This is what bugged me for such a long time and took me to the end of the world.

I couldn’t think of what exactly it was but I knew for starters it was electrical. It all sort of happened when I filled up using Shell V-power racing +ethanol. This was NOT my problem, but it gave me the first impressions.

Things that I did and recommended by other users of SAU were:

- Change spark plugs [No effect]

- Check coil packs [No effect]

- Clean AAC Valve [No effect]

- Change gear box fluid [No effect]

- Change Attessa fluid [No effect]

- Change fuel pump [No effect]

- Change fuel filter [No effect]

- Change back to stock airbox [No effect]

- Re-solder AFM joints [No effect]

- Re insulate Coil pack wiring loom [No effect]

- Check for continuity in PTU (Igniter Module) [No effect]

- Clean, professionally, fuel injectors [No effect]

- Change injector seals [No effect]

- Check continuity in CAS [No effect]

- Re-earthed the car [No effect]

- Checked turbo intake gaskets [No effect]

- Changed to std gtr intercooler [No effect]

- Checked vacuum pipes [No effect]

- Changed battery [No effect]

That’s about all I can think of at the moment.

The issue contributed to consistently having a dead battery.

You all ready, here the almighty answer?

As I was going over it again, for something like the billionth time, I was charging the battery with all the terminals still connected and while I was refitting my new HKS filters I saw this feint glow near the bottom of the power steering reservoir, which I thought at first was just some light bouncing around. This occurred to me as very strange as there was no possible way light could be in that spot where there was no clearance to the ground. I continued to shake the power steering reservoir and the light blinked on and off as I shook it.

To add, a week prior I cleaned that section of the reservoir with contact cleaner which made the stutter go increase from 50% throttle to 1% thottle, so I pretty much had a fooked up car on my hands.

Continuing, I put the maths together and though I should have a look down there. I proceeded to removing the power steering reservoir. Below this reservoir is an engine loom that sticks itself to the side of the car body next to the strut.

The shocking, most unbelievable thing came to sight. The loom that sits under this reservoir had somehow wedged itself between the reservoir and car body. Where they contacted created a wear point that wore out the insulation of the wire to bare copper. THIS WAS THE CULPRET! What this did it provided a short circuit to the body when the voltage increased.

So I proceeded to re-insulate this section and refit everything back to normal.

BAM I was off down the street and what do I get, BOOST, TURBO, AWD, GTR GTR GTR, I was the happiest kid on the block that day. After a year and a half of utter sadness for this machine it was back and better than ever.

I have to say that from all the changes to brand new components the car is actually running better and with more power.

So, I would like to personally thank all for their contributions to my problems and thank you for your patience with my posts. It has been long but I suppose the one thing that I have achieved is knowledge of the car I have passion for.

TO SAU AND R32’s! =P

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Link to my old post that lead to this post:

http://www.skylinesaustralia.com/forums/Rb...l&hl=arbess

Link to comment
https://www.sau.com.au/forums/topic/233110-stuttering-here-was-my-answer/
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arbess Experienced

arbess

Posted
  • Author
Posted
lol...glad its all sorted. reminds me when i was driving around for 4 yrs with only my back speakers working cause i couldnt figure out how to adjust the front on the stock headunit untill i randomly figured it out..lol....stereo finally.

hehe. a good feeling huh?

jebus!!!

tell me about it, im glad its over. i still have a high idle which is one of me next two things to do.

Fantastic Story!

Job well done.

They need you at the NTSB to not only investigate Air Crash Investigations; but to prevent a crash or two...! :rofl:

aaaaaaaahahaha, thats a good one.

hopefully when i finish my engineering degree, this type of shizzz will keep me from going insane. always good to keep the mind busy and then rewarding it by feeding it with good quality scotch.

arbess Experienced

arbess

Posted
  • Author
Posted
excellent write-up, very informative. well done for sharing what you found :D

Thanks dude. It was a bit scratchy since I was very tired.

Hopefully that helps for work you might come across.

I don't think anyone had did as much research as I did for this problem, I literally searched the entire WWW for help on this and this must be the only unique answer to similar stuttering problems.

Always happy to put my input into it, at least its a win-win situation where I learn something and everyone else learns something. Maybe next time it will be a different machine. woot.

Arbz

arbess Experienced

arbess

Posted
  • Author
Posted
^^^ Now there's a thought Arbz...

You wouldn't be able to fix my Mom's washing machine would you?

It has a (hate to say it) stuttering problem!

Tez

Sorry Tez, I personally can't fix a washing machine, BUT my dad can, LAWL. At my house, its a one stop shop!

...and the ATSB needs ya to solve the problem why the O2 bottle blew up on the QANTAS 747.

No stuttering before the explosion.

But plenty after!

:thumbsup:

hmmm might be a faulty HICAS.... if only QANTAS employed skyline mechanics, easy! =P

  • 1 month later...
GTR-N1 Grand Master

GTR-N1

Posted
Posted

Here we go again Arbess!!!

Another Qantas Aircraft. This time it's stuck at Exmouth WA. Can you fix this one too???

Symptom:- It was travelling quite nicely southwards towards Perth. Then it unexpectedly lifted all of a sudden and then it

STUTTERED and dropped.

We have faith in you Arbess!!! :P

  • 3 weeks later...
GTR-N1 Grand Master

GTR-N1

Posted
Posted

Here we go again Arbess!

A stuttering 'Weather Radar' unit on another Qantas aircraft.

Where are you when we need you!!! Surely, Air New Zealand can't hang around forever whilst we look for you!!!

  • 3 weeks later...
GTR-N1 Grand Master

GTR-N1

Posted
Posted

Urgent! Urgent!

It's a local job for you this time Arbess.

A Qantas aircraft last night had a stuttering problem that caused smoke to fill the cabin and cockpit between Roma and Brisbane.

They need you again! :D

Have your rates gone up since last time ??? $990/Hr >>

Tez

  • 5 weeks later...
mitch_SR32 Enthusiast

mitch_SR32

Posted
Posted

My R32 started doing this in the last couple of weeks, god if its this then you have saved me quite a sum of money mate. Its the first place ill look when I get back to my car this week :)

Great write up.

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