03 2.5 not starting

Z

zagamuffin

Member
Hi lads

Went out this morning and car wouldn’t start, threw up the following codes

P0160
P0162
P2272

Would I be right in saying o2 sensor and I’m oxo .anyone else have this issue please
 
Is it turning over?

Are the ignition lights on?

I don’t think an O2 sensor will stop the car from starting. Could easily be the ignition switch, but as said other than not starting what can you tell us?
 
Agreed, all those codes are O2 sensor related which aren't used at startup. If not turning over it eill be either starter motor (give it a tap with a wooden mallet) or the ignition switch.
 
Car is spinning over fine , started for a sec this morning lumpy and then died , when turned over now it gives a slight splutter but no start

Is the ignition switch a known fault ???

Easy fix ???
 
No, if it's turning over ok it's not likely to be either of those. I'm assuming you have enough fuel in, in which case fuel pump / fuel pressure related maybe. When did you last fill up?

When you switch the ignition on, can you hear the fuel pump priming as normal?
 
Tried turning on and off the ignition to check the switch and lights lite up everytime, sounds like the switch may be all right

Focusing on pump now , can you get at wiring in car to check for power , don’t hear it priming but can’t ever remember hearing it

I’ll jack it and have a look now
 
We can do better than this!
Accelerator pedal to the floor, hold it there, and crank engine. If it fires, let throttle go. Its a quick clear flood. Repeat once or twice.
If youve got any carb cleaner or wd40 or easy start, pop air cleaner lid off and squirt any of the above in while someone cranks. If it tries to fire, you have a fuel issue. If not, most likely spark.

Quick and dirty checks as a start.
Andy.
 
Andy

You are THE MAN

Tks a lot , very easy fix when you know how , soun started on full throttle and started straight away with air box open

Wonder what caused it , never failed before
 
ph001 said:
No, if it's turning over ok it's not likely to be either of those. I'm assuming you have enough fuel in, in which case fuel pump / fuel pressure related maybe. When did you last fill up?

When you switch the ignition on, can you hear the fuel pump priming as normal?
Click to expand...

Not true.

When my ignition switch failed it would turn over but not fire. Position 2 was intermittent and unless the ignition lights came on it wouldn’t fire. Not something you tend to notice when you just get in and turn the key.
 
srhutch said:
ph001 said:
No, if it's turning over ok it's not likely to be either of those. I'm assuming you have enough fuel in, in which case fuel pump / fuel pressure related maybe. When did you last fill up?

When you switch the ignition on, can you hear the fuel pump priming as normal?
Click to expand...

Not true.

When my ignition switch failed it would turn over but not fire. Position 2 was intermittent and unless the ignition lights came on it wouldn’t fire. Not something you tend to notice when you just get in and turn the key.
Click to expand...

Good call, just that the OP said it started, then spluttered and stopped which suggests a fuel issue rather than electrical. Anyway, glad it's sorted.

OP- did you by any chance start the car briefly from cold to move it for example and then switch it off again? You can occasion get something called bore wash whereby the rich mixture washes away the oil film in the cylinders resulting in poor compression and lack of starting.

I've never heard of the issue on the Z4 though.
 
As normal , I tried to start it @5.00am to go to work , it spluttered and cut out straight away

It actually sounded like a cam belt had snapped/no compression as it spun quicker than normal
 
That sounds like bore wash alright, but normally it would have to have been started from cold the night before, run for a few seconds and switched off again.

If you get a reoccurrence of this it undoubtedly needs looking into further.
 
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