random fault

[B4Gordon]

Now and then driving along would lose power to dash headlights and power light, steering light would show for few seconds the go back to normal did this while parked too.

Would water,dampness to cpu cause faults like this on and off only really started after window leak on left side where cpu is.

[boon]

The ECUs are damn near sealed and underneath quite a lot of plates and carpet and other stuff. Unless you had like a pool of water in the passenger footwell the ECU is not the problem.

[ADIKT]

Get your alternator tested

[B4Gordon]

since posting this have got replacement alternator coming over night

[B4Gordon]

So I reinstall replacement alternator no issues from drive yesterday but come to work turned a corner and cut out again any other ideas. Was told knock sensor how east to locate and with out removing other parts.

[Rosssub]

When you say cut out, is the engine completely stalling, then all the dash lights come on? Does it start back up normally after dying?

Or is it just having a little hiccup then carrying on?

[B4Gordon]

Hiccup stops for couple seconds then carry's on running. Lose power steering too.

[Marky]

Power steering is dependent on the engine running - is yours manual or auto? Does it have an alarm / immobiliser?

[B4Gordon]

Auto and yes mongoose alarm original one from when car arrived in NZ. NZ new car installed by mongoose nz

[Marky]

It sounds almost (almost) like it's just stalling - do you find it struggles only when coming to a stop or with no accelerator pedal (such as rounding a corner off the gas) - then it restarts itself sort of?

I wonder if you're chasing a fault unrelated to the real problem - does it have a blow off valve and how does it idle - like is it smooth or does it hunt a little?

[B4Gordon]

Off acceleration and on acceleration it happens factory bov idles different rpm under 800rpm not smooth idle can fell it at idle near new afm

[megamac]

Coil packs? Spark plugs? No vac leaks?

[B4Gordon]

Spark plugs iridium only dne 10000kms

No vac leaks coil packs dunno got spares here but need knw code to see if same or not.

[Rosssub]

Coils will be FK0140.

How did you check for vacuum leaks?

Have you ever cleaned out the idle air control valve?

Edited August 13, 2015 by Rosssub

[B4Gordon]

Yes to idle control valve on throttle body all new hosing for vac, replacement bbod as had stuck solenoid leaking air for 2nd turbo

[loner]

Does it only happen when cornering? How much fuel is in the tank when it happens?

[B4Gordon]

does on straights andcorners 1/4 tank

[Marky]

Can you please give us a wee bit more info, this is like pulling teeth

Does the car cut out just completely at random, like driving along steady at 100k will it cut, or is it only when you're off the pedal, or on the pedal, or full tank no gas etc - there has to be something to try and nail when and why it's doing this

I doubt it's water in the ECU, that would likely lead to a more consistent fault and you'd be able to see the evidence of it visually when looking at it

You say it's from a water leak - how did that come about? If it's from a windscreen replacement they generally have a warranty for life on them, I'd chase that path down too

[B4Gordon]

happens at any speed randomly cuts for 2 secs then carry s on running, lose headlights, power sterring also the steering and power light come on i hear relays under dash click when this happens,

window is a after-market one previous ppl didn't clean it properly so over time it rusted then leaked.

happens when penal down and not can happen when parked 1/4-1/2 tank gas

i thought it may of been water near ecu but not sure

[B4Gordon]

if any one in welly region want to have a look let me knw wanna sort b4 Flat nats other wise car wont be coming up

[B4Gordon]

Now have different issues jigging about, lose power still moving but going not fast revs dropping low when stopped. Funny noises in engine bay when doing this any other ideas.

[Marky]

It could be a number of things, I am thinking your best bet is getting it to an auto sparky for a second opinion before something really fcks out. There is no fault codes correct?

[B4Gordon]

No fault codes going to put into my garage on Tuesday.

[B4Gordon]

Booked in for Tuesday get this issue sorted tidy body paint work then up forsale.

[B4Gordon]

found the alarm to be playing up armed last night went to move car no disarm led in car no flash open door no siren, started car soon as i closed door car dies done twice heard chirp from siren tried to start took ages to start run rough, turned off led for alarm flashing disarmed and started car.

maybe alarm is cutting ignition or fuel