replaces snapped belt and now wont start

[patskies]

My belt snapped today. i replaced it with a new one and now my VS V6 ute wont start. it cranks fine.

two points:

plug to oil pressure switch came off

i had to pick bits of shredded belt from behind harmoic balancer.

im thinking its the crank angle sensor.

any ideas?

[delcowizzid]

crank angle sensor or wiring busted

[soop]

^^^
What he said, look at the harmonic balancer, you'll see all sorts of grief.

You're going to cry when you get the bill too...

[patskies]

as it happened last night in the dark i couldnt see shit, so im about to go have a look now. it shouldnt cost too much as il do everything at home.

with the oil pressure switch. should it still be able to start even if the wires were broken? or it was disconnected?

[The1]

no the oil switch runs through the fuel pump, so no pumping fuel if no oil pressure.

[patskies]

there are 3 wires to the il pressure switch. which wires do i have to bridge to bypass the oil pressure switch?

[RX25SE]

Does it have spark?

Can hear the pump buzzing in the tank (get someone to crank it)?

[patskies]

im not at the car at the moment. im waiting for someone to pick me up and take me there. im not sure if there is no spark or not.

man plan basically is...

if the fuel pump isnt turning on im goin to bridge the wires on the oil pressure switch.. if it is working and there is no spark then im puttin the car on a trailer and taking it home and throwing a new crank angle sensor on it.

[RX25SE]

Sounds like a plan.


I change CAS every 100,000kms regardless to eliminate headaches.

[Andrew426]

no the oil switch runs through the fuel pump, so no pumping fuel if no oil pressure.

Thats not right.

Fuel pump builds pressure before you even start the engine - its the whirring sound you hear when you turn the key to the 'run' position

[The1]

it'l prime but if the oil pressure switch doesn't short the wires after starting the fuel pump relay wont click to keep it going. If im reading the wiring diagram correctly Or it just runs as a backup circuit

[patskies]

Thats not right.

Fuel pump builds pressure before you even start the engine - its the whirring sound you hear when you turn the key to the 'run' position

this is very true.. there fore it should start if the oil press switch was not operating or there was a broken wire to it..

im just going to trailer it home and go buy a new oil pressure switch, crank angle sensore, waterpump(waterpump isnt spinning perfectly straight, id imagine thats why the belt came off in the first place) and some filters, oils etc for a service. might as well make a day of it

[hakhawk]

Thats not right.

Fuel pump builds pressure before you even start the engine - its the whirring sound you hear when you turn the key to the 'run' position

fuel pump will always prime, but the oil pressure switch is hooked to the fuel pump relay, if the motor loses pressure, it kills the pump, so motor konks out and you have less chance of paper weight'ing your motor.

[Brett_jjj]

The fuel pump is wired through the engine oil pressure sensor/switch so if the ECU fails,and cant command the fuel pump on, or goes into limp home mode as its called,the oil pressure switch will turn on the fuel pump once the oil pressure gets up to around its running pressure.

[FstStig]

LOL If the oil pressure switch wiring was broken, wouldn't this also result in no oil pressure?

[hakhawk]

LOL If the oil pressure switch wiring was broken, wouldn't this also result in no oil pressure?

oil pump creates oil pressure, the switch just reads the pressure and opens or closes an electronic circuit depending on what pressure its reading.

[Brett_jjj]

oil pump creates oil pressure, the switch just reads the pressure and opens or closes an electronic circuit depending on what pressure its reading.

Exactly right.The pump creates the oil pressure,the switch just reads the pressure.A broken pressure switch wont cause a loss of oil pressure.

[delcowizzid]

yes and the switch is only a backup as above you can unplug the oil pressure switch and the car will run .if the wires happen to be earthed out due to broken sender unplug it it may run again but my bets on smashed CAS or bent fins on the balancer that chop through the cas to make spark happen

[patskies]

ive done a diagnosis test and it came up with Code 46 - No Reference Signal While Cranking

[soop]

CAS and reluctor wheel are shagged, $50 bet. Look just behind the harmonic balancer.

[patskies]

yeah i presumed that from the start. i just thought id post up the codes for future reference when someone else experiences the same problem

[soop]

Yeah fair call.

[patskies]

one more question. whats the thing called that works with the cas with the fins? is that hard to replace? might get one of them while im at it

[soop]

That's the relluctor(?) wheel.

If you go to a wreckers and get an ecotec harmonic balance they usually come with them.

[patskies]

can u get them seperate from the harmonic balancer?