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[05omegav6]

As above... pull up at a roundabout/give way, foot down to pull out, blocks the engine has stopped

Codes are...

0115
0443
0430
0300
0302
0304

It restarts readily enough, but not instantly. Otherwise goes like the proverbial poo from a shovel (cold air helps). Engine is up to temp, fans doing what they should, temp gauge ok. No obvious vac leaks or plugs loose, I only disconnected the injector and rear multiram plugs for the stat change any way also the idle before it dies is fine but once restarted it hunts a bit, hence the misfire codes I guess...

The purge valve is a known entity, I can recheck the hose and plug easily enough, but which sensor produces the 0115

Now on 258k, cambelt done at 240k along with plugs/air filter... only started playing up today, and has done 300 miles since stat change, so not convinvced it's related

[henryd]

Isn't 0115 coolant temp related 

[05omegav6]

Isn't 0115 coolant temp related 

It is but is that the sensor on the coolant bridge or one on the radiator?

[symes]

my disc says its 0115= ECM B  no communication---not sure myself but hope that  helps

[05omegav6]

my disc says its 0115= ECM B  no communication---not sure myself but hope that  helps

Starting to look like yet another poxy loom

[RobG]

Isn't 0115 coolant temp related 

It is but is that the sensor on the coolant bridge or one on the radiator?

[05omegav6]

Isn't 0115 coolant temp related 

It is but is that the sensor on the coolant bridge or one on the radiator?

Ta

Had another rummage and found the cause of the stalling/mardy idle...

The spring clip on the purge valve hose at the breather bridge had failed and pipe had come off
Press the brake pedal on overrun and the inlet air pressure discrepancy stops it dead.

Can feel nothing wrong with the wiring/plug on that sensor, so guess it's toast... genuine new or chance second hand, don't know how reliable they are...

[omegod]

Haven't a clue what one looks like but there is probably one on my 2.6 breaker, get a pic and I'll see if it's there

[05omegav6]

Haven't a clue what one looks like but there is probably one on my 2.6 breaker, get a pic and I'll see if it's there

Rob G to Omega help

I think there are only two things screwed into the coolant bridge... the spade terminal sensor for the temp gauge and the other one which would appear to be the ecu temp feed

[terry paget]

My first V6 would do that, stall occasionally at junctions. Took me months to cure, turned out to be MAF sensor. Easily checked by unplugging.

 

[05omegav6]

No MAF codes though

[henryd]

Haven't a clue what one looks like but there is probably one on my 2.6 breaker, get a pic and I'll see if it's there

Rob G to Omega help

I think there are only two things screwed into the coolant bridge... the spade terminal sensor for the temp gauge and the other one which would appear to be the ecu temp feed

http://images.omegaowners.com/images/guides/v6_cts/IMAGEOFCTS_zpsdc0580fe.png

 

[05omegav6]

Ta

Looking at that I thought there were three connections, yet was sure that only two were electrical, but couldn't place the third

[zirk]

No MAF codes though

Just pulled the Maf plug of my 3.2, to do a 'not convinced about the mpg on lpg' check, been 3 days now, still waiting for the eml to come on. 

[05omegav6]

  did you pull the bulb at the same time

[zirk]

did you pull the bulb at the same time

Noo, pull the bulb out!, does that cause the eml to come on?   

[chrisgixer]

Why would the purge valve cause a stall?

[05omegav6]

did you pull the bulb at the same time

Noo, pull the bulb out!, does that cause the eml to come on?   

No, silly if you take the bulb out, it isn't there to stay on...

Unless of course your one blew at the surprise of not being triggered by a precat code

[05omegav6]

Why would the purge valve cause a stall?

Mahoosive vacuum leak

[chrisgixer]

Why would the purge valve cause a stall?

Mahoosive vacuum leak

Wouldn't it hunt? Sorry, I've no understanding of the purge valve what so ever.

[05omegav6]

Pipe to it comes from breather bridge clip had failed, allowing hose to come off so air leak at inlet effectively.

Clutch down as you come to a stop, so no load on engine and the revs drop low enough to stall, pressing the brake pedal upsets the vacuum in the plenum, making it choke. That combination of effects is enough to stall it dead, no splutter, simply revs drop and stopped.

Pulling one side of the intake duct to the throttle body had the same effect... instant stall.

The purge valve simply releases tank fumes (collected in the carbon cannister in the right hand wheel arch) in to the plenum as part of the emission controls.

[chrisgixer]

Pipe to it comes from breather bridge clip had failed, allowing hose to come off so air leak at inlet effectively.

Clutch down as you come to a stop, so no load on engine and the revs drop low enough to stall, pressing the brake pedal upsets the vacuum in the plenum, making it choke. That combination of effects is enough to stall it dead, no splutter, simply revs drop and stopped.

Pulling one side of the intake duct to the throttle body had the same effect... instant stall.

The purge valve simply releases tank fumes (collected in the carbon cannister in the right hand wheel arch) in to the plenum as part of the emission controls.

Oh ffs. I'll go stand in the corner with Henryd and EMD.

[05omegav6]

I'll soon know on the way to work whether refitting the pipe has fixed it or not

Coolant sensor could simply be a side effect of the thermostat/cooling system issues, now resolved, but cannot be sure as I haven't checked the codes for at least 6 months

[Kevin Wood]

Are you sure the connectors for the coolant temp. sensor and purge valve haven't been swapped?

Failing that, check the resistance of the purge valve with a multimeter. Guessing a couple of hundred Ohms would be typical.

Alternatively, those two items are probably on the same stretch of loom, so might share a common ground connection...

[aaronjb]

Are you sure the connectors for the coolant temp. sensor and purge valve haven't been swapped?

Al, if you need to compare one weekend, let me know.. I really need to find the motivation to pull the inlet manifold & cam covers off anyway and someone coming to look at my wiring might provide that

[Kevin Wood]

Are you sure the connectors for the coolant temp. sensor and purge valve haven't been swapped?

Al, if you need to compare one weekend, let me know.. I really need to find the motivation to pull the inlet manifold & cam covers off anyway and someone coming to look at my wiring might provide that

I doubt it would, but a ruby murray afterwards might.

[Gaffers]

Are you sure the connectors for the coolant temp. sensor and purge valve haven't been swapped?

Al, if you need to compare one weekend, let me know.. I really need to find the motivation to pull the inlet manifold & cam covers off anyway and someone coming to look at my wiring might provide that

I doubt it would, but a ruby murray afterwards might.

Now you're talking

[05omegav6]

Are you sure the connectors for the coolant temp. sensor and purge valve haven't been swapped?

Failing that, check the resistance of the purge valve with a multimeter. Guessing a couple of hundred Ohms would be typical.

Alternatively, those two items are probably on the same stretch of loom, so might share a common ground connection...

Second loom was swapped plug by plug iirc, but that may be a possibility

Purge valve renewed at 160k due to it copping the arse at taking exception to being filled with carb cleaner when I did the breathers.

Difficult to say wrt the purge valve code, as it does include vacuum oddities, and that was the pipe that came adrift...

Didn't so much as hesitate all the way to or from work, so considered 'Checked, found satis. NFA'.

Doesn't rule out either dismantling Aarons car for checking purposes, nor the subsequent curry though