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[TheBoy]

2.0l cannot be paperclipped with engine running. A 0335 means change the sensor (could feasibly be the wheel inside engine, but very unlikely.

Change sensor, as ecu not happy, then see what happens...

[Grumpy]

2.0l cannot be paperclipped with engine running

Thanks for that, 'TheBoy'.

That's what's been screwing me up. I followed the link to the 'Topbuzz'
article and it says exactly the opposite:

The Simtec 56.5 fuel systems use a 4 digit flash code. The engine ideally needs to be running when reading the fault codes, otherwise it may show incorrect fault codes.

This must be a general rule for 56.5 and not specific to the 2.0 Omega, which has been throwing me.

Will order a sensor on Monday and get it changed next week.

[TheBoy]

2.0l cannot be paperclipped with engine running

Thanks for that, 'TheBoy'.

That's what's been screwing me up. I followed the link to the 'Topbuzz'
article and it says exactly the opposite:

The Simtec 56.5 fuel systems use a 4 digit flash code. The engine ideally needs to be running when reading the fault codes, otherwise it may show incorrect fault codes.

This must be a general rule for 56.5 and not specific to the 2.0 Omega, which has been throwing me.

Will order a sensor on Monday and get it changed next week.

topbuzz is more aimed at astras and chavaliers

[holey head]

i now get no codes when engine is off but as the boy said if you try doing it when engine is running nothing happens. i don't get any now so as i say it's showing a code so something is wrong, what happens is the ecu picks up the codes when engine is running so the can be read when stopped, so for them to be showing means that whateva code is showing there is a problem with.

[Grumpy]

Thanks for your confirmation reply, sparks3ks.

It's always better to get feedback from folk like yourself and 'TheBoy',
that have actually 'Walked the Walk', rather than 'Talk the Talk'.  

Experience on 'Type' will always beat the 'Ivory Tower'.  

[Grumpy]

Well, this is fun. Not  

Got my crank sensor this afternoon. Raised the car and squirmed underneath.

Met by a face full of aircon pump and left hand engine mount.
Nary a crank sensor in sight.   :-?

Took off the exhaust heatshield and can just see half of the crank sensor
mounting bolt, poking shyly  out by the oil dipstick tube.

Can just get a fingernail to it if I telescope my arm from the top, down by
the exhaust manifold.

Unless anyone's got a different method it looks like the left hand engine
mount's got to come out on this model. I'm certainly not having the
air con system purged to take out the compressor.

Had enough today, have to pace myself these days or I conk out.  

[TheBoy]

Well, this is fun. Not  

Got my crank sensor this afternoon. Raised the car and squirmed underneath.

Met by a face full of aircon pump and left hand engine mount.
Nary a crank sensor in sight.   :-?

Took off the exhaust heatshield and can just see half of the crank sensor
mounting bolt, poking shyly  out by the oil dipstick tube.

Can just get a fingernail to it if I telescope my arm from the top, down by
the exhaust manifold.

Unless anyone's got a different method it looks like the left hand engine
mount's got to come out on this model. I'm certainly not having the
air con system purged to take out the compressor.

Had enough today, have to pace myself these days or I conk out.  

I'm sure I said earlier if you have a/c then its fiddly on 2.0l

Never done it myself, but if its easy to unbolt compressor to give room, thats the way to go (should be flexible pipes to compressor, so you have some movement).

[Grumpy]

Never done it myself

Sound move!

Up until today, I was also in that happy situation.  

Got plenty of time, so I'll just weigh up my options and choose the
less difficult one. (Can't quite bring myself to say the easiest option).

I'll just run around in the old Merc oil-burner until I've sussed it.

[x25xe]

topbuzz is more aimed at astras and chavaliers

Chavaliers??  What is wrong with Cavaliers?  My 2.0 CDX is great.  Comfortable (although not as comfortable as the Omega) and a nice level of equipment including A/C.  Excellent fuel economy as well (which the Omega has not got!)

Back to the thread though, I remember reading on the dark side a member there with an earlier ecotec system (Simtec 56.1) had this issue and it turned out to be the disk on the crank being gummed up with old oil.

[TheBoy]

topbuzz is more aimed at astras and chavaliers

Chavaliers??  What is wrong with Cavaliers?  My 2.0 CDX is great.  Comfortable (although not as comfortable as the Omega) and a nice level of equipment including A/C.  Excellent fuel economy as well (which the Omega has not got!)

Opps, sorry  

Though many Cavs do seem to end up being Chavved, certainly around where I work.

[Grumpy]

turned out to be the disk on the crank being gummed up with old oil.

Cheer me up some more, why doncha!  

Only joking!  

Weighed this job up some more, whilst relaxing with a nice mug of coffee.
With the exhaust heat shield removed, so that the dog can now see the
rabbit, I reckon this job is best tackled from above, not from below
iaw the Haynes manual.

If I put a universal joint on the torx socket, and stiffen it with some tape,
I should be able to get the angle with 2ft of extension bars, to attack it
by going down between the 2 hoses to SAIS cut-off valve solenoid.

I'm used to working by feel when you can't get visual access, so that
shouldn't be a problem.

Judging by the size of the sensor, and the connector on the other end of the cable,
I don't think there will be enough room to route the cable in the original
run without removing the power steering pump.
I'll tie some cord to each end when disconnected and try pulling it through,
but I doubt it will fit.

So the plan will be to re-route it up the oil dipstick tube with cable ties to keep
it away from the exhaust manifold and over the top of the cam belt cover, rather
than down it and snaking under the power steering pump.

The best laid plans of mice and men, and all that.  

But will keep you posted on how I get on.

[x25xe]

topbuzz is more aimed at astras and chavaliers

Chavaliers??  What is wrong with Cavaliers?  My 2.0 CDX is great.  Comfortable (although not as comfortable as the Omega) and a nice level of equipment including A/C.  Excellent fuel economy as well (which the Omega has not got!)

Opps, sorry  

Though many Cavs do seem to end up being Chavved, certainly around where I work.

No worries - just defending my unchavved CDX!  I agree though, that some Cavs are now being subjected to this kind of treatment.  Not only Cavs, but Escorts, Saxos and Corsas.  I would have thought that they should concentrate more on the standard of driving rather than drilled metal peddles, metal tax disc holders etc!

[Grumpy]

I've got the old crank sensor out, in between rain showers,
but the old sensor looks different to the new one.

The new one is perfectly round, but the old one is more like
an oval shape with 2 flat sides and what looks like 2 locating
fins that run the length of the sensor.

The total diameters of each sensor look the same.

Can't get to the hole in the crankcase to see if it's round or not.
Access to this job is absolutely dire.

Are these interchangeable?
Anyone come across this before?

[Grumpy]

Done a quick Google and a peruse around some part catalogues.

Pt. Nr. On old one = 90506103
pt. Nr. On new one =09174621  (Which is correct for my engine number)

The 2 part numbers seem to be interchangeable with the new
number superceding the old one.

Also found this on one of the sites:

The old superceded part 90506103 has a more squared off head than this version

Which would appear to correlate with my two.

Have put a vernier caliper across the max diameter of each sensor
and they are exactly the same.

Here's a quick pic to show what I mean. It's a bit difficult to get a good
picture, as they are black and the features tend to blend into each
other when photographed.

[TheBoy]

if plug fits, it will be fine