the other day i was driving slowly down a road and the car just stalled, it fired up again straight away so i thought it was me who'd accidently stalled it,

then today the exact same thing happened again, but this time im sure it was the car.

ive done a quick search and noticed a similar thing happens when the PTUs fooked, but apparently the car doesnt start again until the PTUs cooled down, were as on my problem the car fires up first time.

although i have noticed the car turns over for longer before firing up then it used to, as it used to fire up as soon as the key was turned.

any ideas peeps

cheers si

 

p.s. forgot to mention my cars a jap spec '90 twin turbo

thanks again

anyone!!?? im a bit worried about taking it on a long drive incase it goes completely, help!!

search under blocked pcv valves im sure these can cause stalling!

search under blocked pcv valves im sure these can cause stalling!

 

 

cheers mate, ive had a quick scan through but most just seem to mention smoking exhuast, which i dont seem to be have(at the moment)

but ill give em a clean at the weekend just incase.

cheers bud

Hello mate,

 

Is it stalling while you have the gas on or coasting?

 

Vijay

Hello mate,

 

Is it stalling while you have the gas on or coasting?

 

Vijay

 

good question!!!

pretty sure ive got the gas on. SEEMS to be idleing ok.

both times i was driving around 5-10mph

A faulty CAS can give the same symptoms as a dodgy PTU. I had a problem where the car would just cut out while driving, looked as if it was a PTU problem but ended up simply being a dirty connector on the CAS :)

 

Vijay

cheers mate, ill give all my conections a clean.

can anyone tell me how to tell the diference between series 1 and series 2 PTUs,

mine metal with cooling fins on and plastic(looks like) around the outside.

cheers mate, ill give all my conections a clean.

can anyone tell me how to tell the diference between series 1 and series 2 PTUs,

mine metal with cooling fins on and plastic(looks like) around the outside.

you have a series 1 ptu mate.

cheers mate, whats a series 2 look like then.

Si, if it's of any use to you I had similar problems the last couple of weeks at low speeds. My brake/power steering fluid was low, topped it up and hasn't happened since! I think series 2 PTU's are black in colour whereas series one was silver coloured . sorry if i'm wrong anyone.

http://www.aus300zx.com/tech/moveptu/movingptu.htm

the other day i was driving slowly down a road and the car just stalled, it fired up again straight away so i thought it was me who'd accidently stalled it,

then today the exact same thing happened again, but this time im sure it was the car.

ive done a quick search and noticed a similar thing happens when the PTUs fooked, but apparently the car doesnt start again until the PTUs cooled down, were as on my problem the car fires up first time.

although i have noticed the car turns over for longer before firing up then it used to, as it used to fire up as soon as the key was turned.

any ideas peeps

cheers si

 

p.s. forgot to mention my cars a jap spec '90 twin turbo

thanks again

Could be the Variable Idle soleniod!

Give a clean or check conection.

Could be the Variable Idle soleniod!

Give a clean or check conection.

 

whats that then, mate, and were would i find it.

Si, if it's of any use to you I had similar problems the last couple of weeks at low speeds. My brake/power steering fluid was low, topped it up and hasn't happened since! I think series 2 PTU's are black in colour whereas series one was silver coloured . sorry if i'm wrong anyone.

 

nice one mate, ill check the level.

sorry for hi-jack but my zed is a 94 and i have a series 1 put can this be right

whats that then, mate, and were would i find it.

At the back right of the Intake Manifold looking from the front of the car!

http://www.300zx-twinturbo.com/cgi-bin/manual.cgi

Engine emissions and control systems page 4

sorry for hi-jack but my zed is a 94 and i have a series 1 put can this be right

is is deifinatly a 94,check seatbelts for confirmation!

 

most series 2 ptu's were fitted to j spec cars so your may of missed out if yours is uk.94 for being the last year of production in the uk,they probably got stingy :wack:

check tps is at apropriate reading 0.44 - 0.48 -+ easiest way is to test via voltmeter put black lead to earth and place the live probe in to the centre white wire coming of the plug on the tps,grey plug not the black one on the tps,then ajust via the 2screws.

 

a high or low reading can cause stalling especially on autos and can also hamper performance if not set up correctly with the above value

 

greg

whats the tps

whats the tps

throttle position sensor, little black box thingy on the right and side of the plenum

whats the tps

 

 

tps in pic white wire in the middle is where you take the positive via a multimeter

thanks guys i've also had mine stall only a few times though

is it possible my problem could be the alternator!

as one of my old cars had a similar problem, although i cant remember the exact symptoms.