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R32 Gtr Randomly Turning Off

NSNPWR

By NSNPWR,
in General Maintenance

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NSNPWR Rising Star

NSNPWR

Posted
Posted

Ive done a heap of reading and searching on this issue but havent been able to nut it out as yet...

The car is an 89 32 GTR, running PFC and stock AFMs plus various other mods...

So heres the problem, it starts perfect cold and runs great...until water temp reches around 35 degrees...then from about 35 degrees through to 70 or so degrees it will just randomly turn off whenever it feels like it, it restarts and idles fine until it decides to turn off again, it doesnt always turn off, on occassions it has just idled like shit and then stalled...

It has also done this a few times when at operating temperature, while driving along, it just will not rev, putting your foot down makes it choke....most of the time however once its warm its been fine.

So far ive pulled AFMs apart and resoldered the 4 connections as per the tech guide, ive sprayed AFM inside and out with CRC contact cleaner, sprayed/cleaned the CAS plug...

Just seems really inconsistant and im reluctant to drive it at all at the moment...input much appreciated.

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URW34K Apprentice

URW34K

Posted
Posted

this is what i would do in order;

check for vacuum leaks (it is a 20yr old car after all)

check coolant temp sensor and idle air control valve

fuel pump/wiring to the fuel pump

clean/service injectors

good luck.

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-Jimmy- Mentor

-Jimmy-

Posted
Posted (edited)

In my RB25DE I pulled the AFM apart and resoldered the joints and sprayed inside it, it was good for about a week and then it was never repairable (by me), so I replaced it with a very good condition (but used) one and it's been great since.

Yours might be the same, just might not be repairable, because it sounds like the EXACT problem I had.

Edited by -Jimmy-
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  • 2 weeks later...
NSNPWR Rising Star

NSNPWR

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Cheers for the replies fellas, I know it was a pretty vague description and could have been anything...

Turns out connection to Power FC wasnt done up too tight...so I pulled it off, sprayed it thoroughly with the contact cleaner, did it back up properly and hasnt missed a beat since...car has been perfect.

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NZM.031 Grand Master

NZM.031

Posted
Posted

afm's definatly do this.. and its a common problem... you can get brand new z32 afms from various suppliers on here for around $300 each... you'll need something to run them, like a safc... but you'll never have the problem again.

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SIR-032 Enthusiast

SIR-032

Posted
Posted

Cheers for the replies fellas, I know it was a pretty vague description and could have been anything...

Turns out connection to Power FC wasnt done up too tight...so I pulled it off, sprayed it thoroughly with the contact cleaner, did it back up properly and hasnt missed a beat since...car has been perfect.

It will do it again when it does its one of the AFMs playing up try and isolate which one it is and swap it Good Luck

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