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Gtr 33 Electrical Gremlins Please Help!

Guest rip it

By Guest rip it,
in R Series (R30, R31, R32, R33, R34)

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Guest rip it

Guest rip it

Posted
Posted

Hopefully someone out there has an answer for me. I own a 1996 gtr that has recently developed a miss after about 10 - 15 mins of driving. my mechanic has found it to be that the injectors are not getting a perfect supply of power. He has checked all earths and the resistor that sends the spark to injectors, the battery and all come up fine. The car has an Apexi fc and the usual minor mods, upgraded sard fuel pump and regulator, exhaust and filters (314 hp at all 4), so not heavilly modded at all. My mech has spent 12 hours trying everything but no joy. ( he's no goose as he preps a lot of cars for targa and has never seen this problem in 20 years in business ). His next step is to get an auto elec to test for power supply quality???? If anybody can help or has had similar probs please let me know. ( carton of coronas )

Noy Experienced

Noy

Posted
Posted
My 33 used to do the exact same thing. Was ok at the start, then as it warms up it misses a beat.

Coilpacks

My girls GTR did the same thing... and yes new coilpacks. runs like a dream now

Guest rip it

Guest rip it

Posted
Posted

I should have said the car developed a "severe" miss and it would continue to the point that at the lights if i didn't feather the throttle it would stop. This miss and shudder would continue in all gears at all revs. Does that sound the same as your cars? The mechanic checked the spark plugs and coil packs first and said they were fine. Thanks for the fast response guys, keep 'em coming. Cheers

Noy Experienced

Noy

Posted
Posted

My girls car had a slight miss at low revs, rev it over 4,000rpm and it started breaking down badly.. changed coilpacks and the miss was gone. maybe it could be something else with yours but might be worth trying new coilpacks..

wrxhoon Grand Master

wrxhoon

Posted
Posted

Are you saying that it runs perfect for the first 10-15 minutes? Then you get the miss? Or the miss is there all the time now ?

If only when hot , coil packs /ignitor, if all the time make sure you havent blown a cooler pipe and the airflow meters pick it up and dump heaps of fuel in, in this case you would see all the black smoke at the back and car won't have any power at all.

Guest rip it

Guest rip it

Posted
Posted

I dont know how he checked the coil packs, i'll have to ask him next week. ( the problem only happens when the car is warm so i will ask him if thats when he tested the coil packs ). On the Apexi fc hand controller he could see the injectors not working properly by the graph on the display. I've been without the car for 4 weeks and am having massive withdrawal symptoms. My VW transporter and the wifes v6 dunnydore just ain't doing it for me..... :rofl::(:D

OVA 300 Collaborator

OVA 300

Posted
Posted

Sorry about the late response people, my computer had a sicky and i've had to reregister under 'ova 300' instead of rip it. my mechanic has found the cause of the problem, so he gets the coronas. he had checked all of the above suggestions and everything was fine. it is a problem in the wiring loom in engine bay. probably caused by 10 years of twin turbo heat. he hopefully will have it back to me next week. unfortunatley i will miss the cruise in Brizbane on sunday so i hope everyone has a top day. cheers Chris

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