VS cranks but not start

[James39]

The other day my VS just died and would not start again which was only running for 10 mins at the time. Anyway I thought it was the CAS as I poured water on the CAS and it then eventually started and I drove the car back home

Today while checking things I disconnected the CAS and was shocked to find that the car would still start and it ran few for a few minutes and then died, so I connected the CAS again and now it will not start at all.

I checked for error codes which came up ok until I had disconnected the CAS which was Code 48. but thats the CAM sensor...

I am not sure the CAS is the issue as it started without it connected, I hope it been disconnected did not cause other problem?

The pump seems to be working and I have swapped over the DFI. Code 48 was caused by me disconnecting the CAS.
I am stumped right bow

So can any of you guys give me any idea on where to look or should just let an auto electrician charge big dollars to fix it?

[aussie4life11]

sounds like you have a wiring short somewhere along the harness that encloses the CAS wiring. aee if you can see any obvious damage. follow the wiring back as far as you can and keep an eye out for any perished or blackened spots. also check your earths on the engine(one under the altinator and one under the PS pump.) there is also one next to your battery. clean these off with a wire brush or a file and see if that helps

[L67 Calais]

Have you reset the ECU since disconnecting the CAS?

Reset it now and let us know

[James39]

I have reset the ECU and it does nothing.

I have noticed though if you leave for awhile it kicks for spilt second then keeps on cranking.

Still find it strange that it had started without the CAS been connected.

[wraith]

Do an error check then go from there.

[wamboin23]

you sure it wasn't the cam angle sensor you disconnected? It really shouldn't run without the Crankshaft angle sensor

[James39]

Do an error check then go from there.

Done that and comes up ok (flashes 12 three times as I said above

you sure it wasn't the cam angle sensor you disconnected? It really shouldn't run without the Crankshaft angle sensor

Yes I am sure as it was the one that sits behind the Harmonic balancer.

Yeah I agree the motor should not run with it disconected, which makes me think the ECU could be faulty?

[James39]

Would a faulty CAM angle sensor stop it from starting?

EDIT: Never mind I will replace the fuel pump as it is the original since the car was new.....

[Brett_jjj]

When I first got my VSV6 it had no cam angle sensor pickup magnet in the camshaft sprocket ,so it was logging code 48, (no cam angle sensor signal).This didnt didnt effect the actual starting of the car, but it did effect the idle, it used to stall a lot at idle, and would also idle heaps erratically. I fitted a new camshaft pickup sensor magnet and problem fixed, idles perfectly now, so I highly doubt it would stop the car from starting.
About the crank angle sensor, I was just reading through the workshop manuals about CAS problems,and it says that when code 46 is set and active, the car will not run. So the car shouldnt start with the CAS disconnected. Any problems with the CAS signal, that cant be traced back to being caused by a faulty CAS, faulty CAS wiring etc, it says to check the DFI modules wiring and connectors etc, and if no problems found there, it could then be a faulty DFI module thats causing the problem..

[James39]

Cheers Brett..

Another thing I found strange was when it was running (at idle) yesterday the check engine light was on, but when I checked for codes it came up with 12 only, one would assume if the CEL was on there would be a code.
I checked what I unplugged yesterday and wamboin23 was right it was the CAM sensor lol, I feel stupid now....

I feel it is either the ECU (PCM) or the fuel pump. I have a pump on order and I wanted to have a look at the fuel return line anyway, I hope the pump fixes it though.

[aussie4life11]

did you check thru all the codes? cos it always flashes 12 at the start

[James39]

did you check thru all the codes? cos it always flashes 12 at the start

It started first go today but then stalled within a minute or so, so it must be the CAS? sort of confuseing when it shows no fault codes.

Yeah it flashes three times before showing codes, It only flashes 12, which is why I thought it was the pump, but it seems fine.
I have ordered a new pump and also a new CAS.. The only problem is that I think I am going to need help to remove the harmonic balancer.

Not all that keen on touching the tank until I see what the deal is with the CAS, But I might do the pump as I need to see if I can sort out the fuel return line in the tank, lucky I have small hands lol.

[aussie4life11]

When I first got my VSV6 it had no cam angle sensor pickup magnet in the camshaft sprocket ,so it was logging code 48, (no cam angle sensor signal).This didnt didnt effect the actual starting of the car, but it did effect the idle, it used to stall a lot at idle, and would also idle heaps erratically. I fitted a new camshaft pickup sensor magnet and problem fixed, idles perfectly now, so I highly doubt it would stop the car from starting.

my car has no problem starting just idles rough, where is the cam angle sensor located brett_jjj?

[Jxw]

if you open the throttle slightly does that make a difference in starting?

[James39]

if you open the throttle slightly does that make a difference in starting?

Makes no difference at all....

[Jxw]

cas or dfi module would be my guess, cas is the cheapest to replace first, i'd start with that

[James39]

cas or dfi module would be my guess, cas is the cheapest to replace first, i'd start with that

I agree that it is the CAS and so far I know it is not the DFI or coil packs as I three other spare DFI and coil packs lol...
I even has a spare CAS but I am not sure if it is ok to use...

[Jxw]

i'd use a 2nd hand one if it was to get me out of a jam and may help you diagnose and be sure.
But a new one is only about $50-$60 is it really worth messing around with a 2nd hand component that quite commonly fails? (think i saw you say you have ordered one?)

[James39]

i'd use a 2nd hand one if it was to get me out of a jam and may help you diagnose and be sure.
But a new one is only about $50-$60 is it really worth messing around with a 2nd hand component that quite commonly fails? (think i saw you say you have ordered one?)

Yeah I ordered one from good old eBay, I just hope it is ok for the long term..

NEW V6 Holden VR VS VT VX VY Crank Shaft Angle Sensor | eBay

I would rather only have to do the job once and would feel better if I used a brand new one

[cruzn]

If the problem is with the CAS the car would stall instanty as though someone turned the ignition to the off position using the key. If the problem is with the fuel pump the the car will spluter and choke before it finally stalls over a couple of seconds (as the fuel pressure drops). You can replicate this by removing the fuel pump relay as the engine is running as watch it stall.

[VS_Pete_1]

It started first go today but then stalled within a minute or so, so it must be the CAS? sort of confuseing when it shows no fault codes.

Mate mine started stalling and got worse I had no codes.
Mine stalled at 60k/h got it started on the run still no codes.
Changed the cas years ago no trouble again.
I`ll find a thread I got some help from a guy who gave his car to holden and they drove to and from work with the Tech2 connected the code came up after 5 days and car stalled. So the cas was working more or less if that makes sense.
I`ll go looking for it now.

[VS_Pete_1]

Have a read of this.

VS Wagon Engine Just Cuts Out

[James39]

Have a read of this.

VS Wagon Engine Just Cuts Out

I have now thanks.


In this case when it stalls it does not start again. I am glad this did not happen on the freeway and at least it decided to stuff up at home.
But months ago it would at random stall and you would be able to start it again.

I am still waiting for the CAS and pump, when I get them the CAS will be first and even though I know how to do it I am not sure I can replace the CAS at this stage, so if there is anyone who lives near I would be grateful for some help

[VS_Pete_1]

When you do the fuel pump get new breather hoses on the tank as they do break and be a shame to have to stop work because of this.
EnZed is you friend for hoses.

[James39]

I will be doing the CAS first and if that fixes it I will just keep the pump as a spare..

Also can a Oil pressure switch cause the motor to stall and not start?