Please Help Diagnosing Problem

[matt31]

Hey guys, I'm hoping someone might be able to help me diagnose a problem my 32 gtr is having. Yesterday i was driving on the highway when out of know where i start losing speed and dropping revs, i give the accelerator a squeeze with no result. So pull over and engine is not running but turbo timer has not kicked in and radio is still going. I wait a minute then start it up fine and I'm off, one minute later it happens again this time car wont start after several times, so i wait about three minute try again and finally go it going. When i get home i was thinking it might be the battery so ive pulled it out, it has an indicator on it and was reading fine. The leads had a bit of that green shit on them so i've cleaned that up. Later took it for a ride and all of a sudden my radio goes dead and the light on the car get brighter, then i notice the volt gauge is reading as high as it goes over 18V and my anit-lock light is on. Other then these symptoms the car runs fine, im stumped so i hope someone might know what it could be?

Edited April 6, 2008 by matt31

[R33S2]

Sounds electrical to me,

1. the switch that cuts out charging on the alternator could be stuffed.

2. bad earthing somewhere (which i had a problem with)

3. loose connection (a bastard to find when intermitant)

4. coilpacks ignitor is dying try swapping it to see if that stops it

The best you can do is check your earthing points and all the connection plugs are tight and not corroded inside.

otherwise an autoelec might be the go, I may be wrong though and it could be something else entirely.

[matt31]

Hey guys, turned out to be two different problems. The regulator on the alternator was stuffed causing the alternator to over charge, this has been fixed. Now the problem with the engine cutting out seems to be something different all together(lucky me) cause its still happens every now and again. It can happen either accelerating or just cruising, it will happen out of no where, engine will just lose all power and start losing rpm, sometimes it will start going again before car completely stops but most of the time the car will switch off once it loses all rpm. some times it will start straight back up other times it can be a real bitch and take a long time till it wonts to turn over, but once it does it is fine. I have know idea what to do, Ive search the forum with no luck, please help.

[Jmaac]

ignition module (aka ignitor), black box on top of the head that your coilpacks plug into (on S1)

when the unit is on its way out it will stop working once it gets hot

Edited April 7, 2008 by Jmaac