Am I right thinking it's the fuel pump???

[1vngal]

Ok, so on Friday morning, I drive to work all is fine, nothing really out of the ordinary as to how Ruby was running.

Then, when I leave work Friday arvo, she won't start. Battery got ruled out, as I got all lights on dash, and turns over fine, just won't fire. Not that slow "Rrrrrr Rrrrr Rrrrr" or anything.

So next I hit the key and had a listen down the fuel tank (Ruby was parked near the freezer motors for the warehouse, so i had to get right down near it to listen ) And not a sound from there.

Also, I've noticed at really low speeds (gotta love peak-hour on the Monash!) she sorta like jerks slight as though the revs drop a bit.

Do you guys think I'm right, or can you guys think of something I may have missed?

[azkwazere]

if you cant hear it priming, car wont start(or fails to do so) seems to jerk at low speeds... yeah fuel pump... mine always primes so if it aint doing it along with other issues, would be my first replacement.

aZk.

[Chirpstr]

So next I hit the key and had a listen down the fuel tank (Ruby was parked near the freezer motors for the warehouse, so i had to get right down near it to listen ) And not a sound from there.

Remember that it only takes about 2 secs to prime so if can get out of the car and put your head near the tank within that period your doing well. lol
Check codes to state the obvious.

[samuels]

Ok, so on Friday morning, I drive to work all is fine, nothing really out of the ordinary as to how Ruby was running.

Then, when I leave work Friday arvo, she won't start. Battery got ruled out, as I got all lights on dash, and turns over fine, just won't fire. Not that slow "Rrrrrr Rrrrr Rrrrr" or anything.

So next I hit the key and had a listen down the fuel tank (Ruby was parked near the freezer motors for the warehouse, so i had to get right down near it to listen ) And not a sound from there.

Also, I've noticed at really low speeds (gotta love peak-hour on the Monash!) she sorta like jerks slight as though the revs drop a bit.

Do you guys think I'm right, or can you guys think of something I may have missed?

i have experienced this....It turned out to be the CAS
Also is it manual or auto?If it's manual they all pig root in slower speed areas(also a CAS will give you a stalling effect,the motor will actually stall then re-start,the feeling of a flat spot with nothing on the accelerator...hence the stalling)

Also a friend experienced this too,his turned out to be coil pack

[1vngal]

Remember that it only takes about 2 secs to prime so if can get out of the car and put your head near the tank within that period your doing well. lol
Check codes to state the obvious.

Lol, yeah I know. I had my friend hit the key while I listened.

i have experienced this....It turned out to be the CAS
Also is it manual or auto?If it's manual they all pig root in slower speed areas(also a CAS will give you a stalling effect,the motor will actually stall then re-start,the feeling of a flat spot with nothing on the accelerator...hence the stalling)

Also a friend experienced this too,his turned out to be coil pack

She's auto.

The jerking at low speeds is barely noticeable. Main reason I think it's the fuel pump is because I've had no other problems with her at all, and VN fuel pumps are famous for packing it in with no warning.

[vnskidder]

check ya fuses and wiring, i thoguht my fuel pump died cuz i couldnt hear it, so
i replaced it went to start it and i still cont hear the fuel pump. so i got an auto sparky
to check iot out, turns out the power wire to the fuel pump relay had broken, thus stoppin the pump from working,

[samuels]

Lol, yeah I know. I had my friend hit the key while I listened.



She's auto.

The jerking at low speeds is barely noticeable. Main reason I think it's the fuel pump is because I've had no other problems with her at all, and VN fuel pumps are famous for packing it in with no warning.

the jerking could also be coming from the CAS as well you just probably don't realise it had stalled,(manual or auto) as i said has happened to me,i also thought it was fuel pump too,replaced it and still did it.
PS... don't think i'm saying i'm right and your wrong.... i'm not saying that at all,just pointing out that the CAS can give you the same symptom

[greenfoam]

Easiest way to tell is ask how many ks Ruby has done now, The stock fuel pump WILL die at around 180,000ks give or take a couple but very close to that, The cas and coils both last longer than that

[samuels]

Easiest way to tell is ask how many ks Ruby has done now, The stock fuel pump WILL die at around 180,000ks give or take a couple but very close to that, The cas and coils both last longer than that

CAS's are very tempermental and can last from 1K to 500,000K's...just like anything else...only thing to do is simply replace the fuel pump,like me it will tell you,proccess of elimination,by replacing each suspected part
iv'e seen brand new fuel pumps burn out as soon as you turn the key as with coil packs....it's just life, it's one of those things.....mass produced

[greenfoam]

Yep that's fair enough but every VN V6 I've ever known chucked the stock factory fuel pump at 180,000 plus or minus 10,000 ks and I think Ruby would be around that range by now. I replaced the cas in my VN when the pump just because someone told me may as well do that too since it wont last much longer but the new CAS only lasted another 100,000. With the CAS you can normaly still get the car started somewhat until it gets warm

[samuels]

Yep that's fair enough but every VN V6 I've ever known chucked the stock factory fuel pump at 180,000 plus or minus 10,000 ks and I think Ruby would be around that range by now. I replaced the cas in my VN when the pump just because someone told me may as well do that too since it wont last much longer but the new CAS only lasted another 100,000. With the CAS you can normaly still get the car started somewhat until it gets warm

yeah true as well....but mine wouldn't start at all when it went....not even the next morning,this is what i'm trying to get at,sure she doesn't have to listen to us or replace what everyone tells her to
i was getting the same symptoms as her,naturally i just like 1vngal immedietly thought fuel pump,replaced it,granted yes it did fire back up,but the cutting out jerky feeling came back later that day,pulled in driveway,turned car off,couldn't get it started again,replaced coil pack...no go,replaced the CAS next morning after trying to start it again,boom away she went...once again granted people don't have parts laying around to swap around,but i am fortunate enough i have vn parts to last me a life time....well i did till people knew i had parts

[1vngal]

Yep that's fair enough but every VN V6 I've ever known chucked the stock factory fuel pump at 180,000 plus or minus 10,000 ks and I think Ruby would be around that range by now. I replaced the cas in my VN when the pump just because someone told me may as well do that too since it wont last much longer but the new CAS only lasted another 100,000. With the CAS you can normaly still get the car started somewhat until it gets warm

I swear you've been inspecting my car.....You evil person.

She's sitting on 175,XXX k's.

[Just_a_stocker]

when my fuel pump went i called the RACQ.
he went to the back and belted the bottom of the fuel tank a few times and said,"give that a go".
I did and it started, so if that ever happens you know its your fuel pump.

[vn calais manual]

that normally happens when you run them dry..


replace your fuel pump, as greenfoam said, if it isnt actually it, theres only a matter of time til it packs it in anyway.

[1vngal]

that normally happens when you run them dry..


replace your fuel pump, as greenfoam said, if it isnt actually it, theres only a matter of time til it packs it in anyway.

I've never run mine dry....

Very rarely does it get under a quarter before it gets filled again.

[defecat0r]

Ok, so on Friday morning, I drive to work all is fine, nothing really out of the ordinary as to how Ruby was running.

Then, when I leave work Friday arvo, she won't start.

haha **** ay, i had exactly the same thing happen to me on friday arvo when i came out of work

Couldn't hear the fuel pump priming so was pretty sure that was the problem. I'm on LPG though so when the RACQ guy came out, he sprayed some aerostart in the air intake to get her to kick over and onto the lpg.

A mate came over just tonight and helped me change it over. If your going to do it yourself it's not TOO big a job if you generally know what your doing with this sorta thing, probably good if you've got a few hours and someone to help though. I got a fuelmiser internal high pressure pump from repco for $100. That's what u need for v6 with the 63L tank. No idea if fuelmiser is a crap brand or not though.

but yea, if you've had a play in the fuse box near your battery, and swapped the fuel pump fuse and relay with the ones for the horn or something, and you still can't hear it priming when you turn the ignition on, more than likely your pump i'd rekon.

[greenfoam]

I swear you've been inspecting my car.....You evil person.

She's sitting on 175,XXX k's.

You better start saving for the water pump and harmonic balancer which will both go before you hit 230,000. Water pump will probably go at 200,000, after that the balancer will start knocking, throw rubber out the back and possibly rip your belt which will then rip the felt on your bonnet .

After those go you should be smooth sailing until your at 270,000+ and its a hot day in about January, then the CAS will conk out :P, the joys of having the last low km VN everyone else has had no problems for years apart from knocking bearings in the morning on 300,000+ engines :P

[jc1879]

At the chance of sounding dumb, What is a CAS? and where could it be found?

[jas98]

my car still has the ORIGINAL CAS...guy before me never changed it (im the second owner) and it still looks like its the original and its up to 344 xxx k's....still goes absolutly fine.......not saying it aint gonna **** up tommorow though..........next time i take the balancer off i may change it

so yeh they can last for ages or not

[1vngal]

Well I was right. It was the fuel pump.

I got a tow truck Monday arvo to get her from work and take her straight to my mechanic. So she's all good now, just gotta pick her up. I was gonna do it at home, but I simply don't have the time. And we really need two cars due to work. Oh well. At least I finally got the brakes done

[1vngal]

At the chance of sounding dumb, What is a CAS? and where could it be found?

Crank Angle Sensor. It's down behind the harmonic balancer.