5L not starting

[VNexecutive]

hey all, was driving yesterday when my car cut out approaching a set of lights.
it wouldnt start back up again so i had to get a tow back home. when it cooled down me and a mate checked for spark and it doesnt have any. now ive done a search and found a few things of which it might be, such as the sensor in the dizzy (halls effect sensor?), the coil and a few others.

unfortunately i dont have a diagnostics cord to check for fault codes, or a multimeter (not that i know how to use one anyways)..

ive also been told to check the earth strap but considering the car has power is it worth checking that?

my mates uncle (mechanic) reckons he has something you connect to the top of the dizzy to give the car temporary spark, so if that makes the car start, does that mean its the coil? or can it still be the sensor in the dizzy?

also another thing thats happened in the past two days, when i take off around a corner and give it a bit (nothing illegal just high revs) its like the engine loses all power (as if its about to stall) then keeps going, but i tried in a straight line and this doesnt happen.. i figured this would be cos the car is low on petrol (it had about a quarter of a tank).. but does this sound like it has anything to do with the problem of the car not starting the fuel pump still primes by the way.

any help would be much appreciated, thanks.

[VNexecutive]

okay so i changed the coil. still not starting.
rang my mate and he said the halls effect sensor arent available anymore but i dunno. im ****en ****ed off.

[richardsworkcar]

Hi, the hall effect sensors are available as are the new distributors, repco, coventry or burson sell the hall effect sensors the suppler is in Hallam Vic Ph 03 9796 5907 and get the part number if they dont know what your talking about. The hall effect going is a very common problem but you may want to get the Distributor tested first, there are a few in Melbourne who do this that i know of contact me on rsft@aapt.net.au if you need to know more!!! Regards Richard.

[VNexecutive]

thanks mate, yeah ive also been advised to check the ignition module before pulling apart the dizzy. i might just take it to a mechanics. towed, of course.

[richardsworkcar]

No worries take it to an auto electrician though, I would recommend any bosch service approved you have up your way. it is all Bosch equipment so they need the specific tester to test these items, such as the EDEA tester, or they may have a test unit they fit to diagnose it, most mechanics just guess.

[VNexecutive]

yeah i know of an auto elec, one of my brthers mates ill get him to take a look at it.

[Blown V6 Hatch]

Ignition module......100%

[richardsworkcar]

Let me know how you went, I used to sell a lot of modules and also a lot of hall effects (which is basically a magnet)

[wrx884]

If its ur ignition module take it 2 repco they can give u reco modules in swap of urs i picked mine up 4 $138 (new is well over 500 even at holden). At the time wen mine went did the same thing as urs i arrived at an intersections and she cut off and wouldnt start again. if u can grab a module from a mates car and play swapsies if it starts thats the problem, will save u some cash doin it urself 2 its just plug and play.

[wildss]

sorry to hijack but i have a similar problem with my 5L...
took it for a quick spin and put it away, about a week and a half later it wouldnt start.
i thought it was the ignition module but i chucked that on a mates car and it works.
now, i thought only vt 5L had the hall effetct sensors in the dizzy and pre vt had something else. what are the chances of my car having the same problem? which part is more likely to fail the coil or this sensor in the dizzy?
remember the car ran fine until it was put away and it wasnt driven at all the only thing i had to do was jump start it cos the battery went flat.
any help appreciated

[Emackulation]

My random shiaty starting issue isnt resolved either. Long time to crank and then fires(sloppy start). I borrowed a mates ignition module and it was the same. So im looking at the coil next.

[Reaper]

My random shiaty starting issue isnt resolved either. Long time to crank and then fires(sloppy start). I borrowed a mates ignition module and it was the same. So im looking at the coil next.

Fuel pump didn't fix it??? Whilst you are looking at the coil, replace the dizzy cap and roter button. Probably won't fix the problem but my VP ran a ton better since I did that.

Reaper

[Emackulation]

Fuel pump didn't fix it??? Whilst you are looking at the coil, replace the dizzy cap and roter button. Probably won't fix the problem but my VP ran a ton better since I did that.

Reaper

Nar, I didnt think the fuel pump was going to fix that problem. I changed the rotor button and dizzy cap back when I got the car, and it didnt fix it back then(starting issue). Also, I took the immobiliser out on the weekend, that wasnt the issue either! So im bloody confused. The coil I cant even see, its so tucked away.

[Reaper]

Nar, I didnt think the fuel pump was going to fix that problem. I changed the rotor button and dizzy cap back when I got the car, and it didnt fix it back then(starting issue). Also, I took the immobiliser out on the weekend, that wasnt the issue either! So im bloody confused. The coil I cant even see, its so tucked away.

No idea then . The coil is a slut of a thing to get to as well.

Reaper

[VNexecutive]

yeah the coil is bad, but if you take off all the covers ou can, then remove the spark leads and get them out of the way its not too hard if you have lanky hands. haha. gunna ring a mate and see if i can swap ignition modules with him now.

[Emackulation]

Well, I just bought a HEC716 ignition coil and ima give it a go. Ill report back if it fixes anything. Cost is $60, I got it for $50 because of voucher.

[wrx884]

Well, I just bought a HEC716 ignition coil and ima give it a go. Ill report back if it fixes anything. Cost is $60, I got it for $50 because of voucher.

let me know 2 mack mines similar 2 urs aswell but usually takes longer 2 crank over wen the engines at runnin temp is urs the same?

[richardsworkcar]

All commodore VN-VT SI V8 ran a hall effect in the dizzy, they did change the through the models,

[richardsworkcar]

sorry hit enter by mistake! if you look in your dizzy you will see a chopper below the rotor, (the steel wheel with eight cut outs on it) this wheel runs through the hall effect (which is basically a magnet) and sends the ecu a pulse showing how quick its spinning. Repco, Burson and Coventry sell the hall effects, if you have any drama with the parts guys there not knowing what you want,ring the current manufacturer: RAE on 03 9796 5907 and ask for the part number to give them. hope that helps!

[Reaper]

sorry hit enter by mistake! if you look in your dizzy you will see a chopper below the rotor, (the steel wheel with eight cut outs on it) this wheel runs through the hall effect (which is basically a magnet) and sends the ecu a pulse showing how quick its spinning. Repco, Burson and Coventry sell the hall effects, if you have any drama with the parts guys there not knowing what you want,ring the current manufacturer: RAE on 03 9796 5907 and ask for the part number to give them. hope that helps!

So what you are saying is that sometimes at low rpm (such as cranking to start) the pulse doesn't happen?

Reaper

[Blown V6 Hatch]

Mack: I have a suspicion that you car has internally leaking injectors.......

Exactly what does it do?? Does it not start straight away all the time or does it only not start first go at certain occasions?? When it does start, does it run rough for a little bit and blow a little black smoke out the exhaust?? If you turn it off and start it again straight away or say 2 minutes or so, does it start first go?? And if you leave it for say an hour or so, then it winds over for a bit then start?? These are all symptoms of internally leaking injectors!

[VNexecutive]

well the problems been sourced thanks to one of my mates, bloody legend thats for sure.

two things went at once, the plug that connects to the halls effect sensor wasnt clicking in, the backing that holds it into the dizzy blew out, so it was dangling loose and not staying plugged in, and the ignition module has shized itself. the plugs fixed for the sensor, just have to get a reco module now. hearing her tick over and start again was so goooooooddddd

thanks for your help guys.

[Emackulation]

My issue is more dominant on 2nd start/hot start. First start in the morning and arvo is usually after 1 or 2 cranks, if i turn it off then remove key, put key back in and start it will crank for atleast 8 cranks and fire blankly and crap. I have not seen any smoke upon startup, nor ahs any1 else told me of any.

I replaced the coil tonight and first start was great, bam, nice and crisp, idle was very smooth, exhaust had even water residue (meaning running good). The revs were much better too, much more responsive and smooth. But upon turning her off and trying for the 2nd start, she cranked 8 times or so again. So it made the car run better but it did not fix my issue.

I got right in there and could see the hall effect sensor plug, I didnt unplug it, but had a little tug and it was on.

[nori]

hav ya had a fuel pressure guage on it, mabe the fuel pressure reg could be getting stuck with vacume after the first start and letting the fuel back to the tank, and check the vacume line to it

[Emackulation]

hav ya had a fuel pressure guage on it, mabe the fuel pressure reg could be getting stuck with vacume after the first start and letting the fuel back to the tank, and check the vacume line to it

I will check this out, thanks.