v5 sti starting then dying after about 2 seconds of running

[scoobygt]

is my mates car, have checked the codes and there is nothing that would relate to this issue, maybe a afm issue? also reset the ecu.

[lachlan]

fuel pump ? does die all in one go or does it putt out slowly ? anything change if you give it the jandle ?

[scoobygt]

fuel pump primes! runs smooth but then dies slightly roughly : no change when given the boot

[lachlan]

if you have no codes then its a bit odd

check if the fuel pump continues to work ? hear it / squeeze the fuel lines as youre trying to start it ?

rag in the intake ?

[scoobygt]

can\'t hear it running over the engine bro so can\'t answer that! will get him to squeeze the lines haha

[tebbyj]

Had this happen on an old honda accord and it was the ignition switch. Just something to check.

[scoobygt]

apparently it now has code 12 showing??

[tebbyj]

Which comes back as starter switch or circuit.

Pull the plastic covers off and get your multi meter, see if the switch has continuity.

[scoobygt]

you have the acc wire, the on / dash light wire, constant power and the starter wire.. so i\'ll check to see if he has constant power?? maybe his alarm is playing up??

[tebbyj]

I don\'t know of all the wires off by heart but there will be at least one constant and the others. check for constant volts in then volts out from each wire with switch, or measure resistance across the switch itself in all positions to see if theres a short in it.

Could be an alarm problem, within the immobilizer ignition relay, or even alarm wiring.

[Guest]

AFM doesnt always throw code. My V5 was seriously temperamental with afm. Try unplugging it and seeing if theres any difference. Normally stay started for longer than 2sec if afm is buggered or unplugged though just run ragged as fuck for 5-10sec.

[scoobygt]

actually unplugged the afm and it didn\'t even effect any thing so maybe that is or isn\'t the problem!

[Guest]

Wouldnt outlaw it just yet. Can you take a decent video with aubible audio?

[scoobygt]

yeah have a iphone and a slr so could try that!

[log1call]

You should check your fuel flow rate and then pressure, at the rail. Disconnect the hose and shove it in a bottle, turn the key on and there should be a full flow out of the hose. Now whip it out of the bottle and stick your finger over the end, turn the key on, and you should have pressure, somewhere near household water pressure... depends where you live...

[log1call]

It would also be a good idea to try a replacement "know good" main relay... they were renown for this symptom years ago.... Or slip your relay into a mates car and se if his car shits out..

[log1call]

Always do the simple stuff first.

If you have a timing light, stick it on and watch it as the motor dies, does it stop, then the motor run down, or does the motor start dieing and the spark keep going...

[Guest]

 log1call said:

You should check your fuel flow rate and then pressure, at the rail. Disconnect the hose and shove it in a bottle, turn the key on and there should be a full flow out of the hose. Now whip it out of the bottle and stick your finger over the end, turn the key on, and you should have pressure, somewhere near household water pressure... depends where you live...

Or you could just check it with a proper pressure gauge as my finger doesnt read 43.5psi. Anyway holding your finger over the end of the hose is thick as s*** unless youre keen to clean it up with a match.

[Eight_dollar]

ecu use\'s cam/crank and coolant temp to start engien - all other sensors are ignored

AFM is used once engine is started , so your problem could well be that - can you fit a test unit

easiest way to see is to get it put on scan tool and do a data read out - the reason should be pretty clear

[scoobygt]

Well I have to go and see him on Tuesday so fill try my b4\'s afm

[log1call]

 evowrx']

[quote name='log1call said:

You should check your fuel flow rate and then pressure, at the rail. Disconnect the hose and shove it in a bottle, turn the key on and there should be a full flow out of the hose. Now whip it out of the bottle and stick your finger over the end, turn the key on, and you should have pressure, somewhere near household water pressure... depends where you live...

/quote]

Or you could just check it with a proper pressure gauge as my finger doesnt read 43.5psi. Anyway holding your finger over the end of the hose is thick as s*** unless youre keen to clean it up with a match.

Yeah well for stupid people that would clean up with matches, yeah, perhaps better you don\'t do it that way.

I\'ve had enough pressure though to know that I can hold that pressure in a six mill hose, and I know that if it\'s got enough pressure to feel, that it will keep running, so my suggestion is ok for reasonably intelligent people... you better stick with your gauge though...

And, if you are so smart, why don\'t you suggest the simple things first?

[log1call]

Oh, ok... you are let off Evowrx...

I see you are only twenty-one... that explains it.

[Eight_dollar]

25 psi eng wont start -proven

43 psi eng will start

honestly if you can tell the difference with your thumb your a legend !

[log1call]

Lol... you young fellahs are a crack-up.

I\'ve been in this forum a damn lot longer than you young Evo.. for that matter.. I\'ve been in the trade just a little more than twice as long as you have been alive...

And, I am a legend.. literally.. funny huh.

[Guest]

You sound all the better for it. Hard to judge how smart you are over the webs and just coz you ride a mobility scooter and know your model t\'s doesnt gain my respect if thats your intention which I highly doubt.

If you were joking about your extra senstive fingerometer Im sorry but it just didnt seem like a joke just a real dipshit idea. If you really are a legend cool Im not going to kiss your feet after a comment like that.