Random Shutdown

[Sloupos]

hey all

iv got a mate whos not a member... i dont know why hes not, WHAT AN IDIOT!!! lol

anyways his problem is

hes got an r34 gtt 2door

while hes driving anywhere... usually above 60km/h, all the electrics shut off and the engine dies,

till he comes to a stop...wait a few minutes and then starts up again perfectly fine....wierd

hes taken the car to a local mechanic and aparently it requires a "hot/ cold sensor".....worth $900 from Japan

now...... iv never heard of this. im a 3rd year app mechanic n iv asked many friends at work... no idea

any help? is my mate getting stooged?

cheers

[geraus]

What mods has he done to the car? any aftermarket ECU or anything? Also is he running a stock Blow off Vavle? is it plumb back? Atmospheric?

Did you check the fuses?

[mad082]

my mate had a similar issue with his ceffy after he put in his rb25 and didn't have the dash connected up. there must be a resistor in the dash (or somewhere between the ecu and the speedo sender) that reduces the voltage as my mates ecu was hitting the speed limiter. but i don't think it was actually shutting down.

maybe there is an issue with the AFM that is putting it into limp more. i would suggest getting a consult cable for about $60 and check the ecu for fault codes. the electrics shouldn't shut off if it is simply a leaking bov, etc.

actually i hust had a really funny thought. if it is happening at a regular interval, it could be his turbo timer if he has one. there could either be a fault in the ignition wiring that is making it think the ignition has been turned off, the turbo timer may be faulty, or the turbo timer may be wired up incorrectly.

[mad082]

i just remembered that a mates 33 i put a emanage ultimate into had a dodgy harness and when bumped it would just die completely and nothing would work. it was like it had a flat battery. just had to push the harness into the ecu's nice and firmly and it was fine.

[Duncan]

hot/cold sensor is very non-specific.

are there any errors showing on the ECU? try plugging in a PFC and going to sensor check. Since its a 34 I'm going to guess it will be showing THRO error which is for the little map sensor at the rear of the plenum. The sensor itself is pretty reliable but the loom it it often fails - therefore $900 from jp would not help.....

[hypergear]

Had same problem. Mine was timing belt.