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1

Omega General Help / Re: Why won't it start...?

« on: 31 May 2011, 23:28:38 »

okay, just before I throw money at my local VX dealer for a new crank sensor, I've remembered something.

Although I haven't had this car long, I'd noticed that the engine seems to cut at around 4250RPM or thereabouts.
Maybe the rev limiter cutting in? I couldn't tell properly because I backed off the rev's to regain drive. Is this likely to be connected, or another fault to pursue?

Before dismantling too much to get at the sensor I've double checked - definately no spark, and the fuel pump doesn't run either. I've proved the relay to be good, and linked the pump directly to power to check it runs, which it does.

Does a dead crank sensor switch off both the ignition and the feed to the fuel pump then?

Thanks for your continued help.

Julian

2

Omega General Help / Re: Why won't it start...?

« on: 25 May 2011, 00:00:07 »

hmm....I get the message here!

I guess I'm kind of relieived - I was dreading working out how to out-wire the immobiliser.

Looks like I'll need to change the sensor and see what happens.

3

Omega General Help / Re: Why won't it start...?

« on: 24 May 2011, 22:55:37 »

.....okay, you think it could still be crank sensor even though I got no fault codes at all?

4

Omega General Help / Why won't it start...?

« on: 24 May 2011, 22:42:16 »

Hello folks...

I know someone's going to know the answer...

I've recently added a lovely '94 reg 2.5CDX to my collection, beautiful condition, essentially one owner and 85000 on the clock. Most things seem to work pretty much as they should.

However whilst out last week, after turning the engine off with no warning of any problem, it wouldn't start again five minutes later. Cranked over okay, but no sign of life. AA took a look and didn't manage to find a spark, so towed me home. Also, I'm not sure I hear the fuel pump running. 

Just done the paperclip test as described helpfully on here expecting to get 19 - incorrect RPM. I've had crank sensor failure before on another V6 and assumed it would be that again. However I only got 12 - sequence commencing and 31 - no RPM signal, which I assume positively indicates the crank sensor does work.

No other codes came up.

There was no preceeding fault, however there is an oddity with the immobiliser in that the car cranks and starts immediately after unlocking but if you remove the key and try to start again (ie, after filling up at a station etc.) the cabin monitoring light will be lit, and the car won't crank. Press the button on the key, wait for a relay somewhere in the cab to "click" and away you go.

I think that's okay, because I'm still getting that to happen, and the car's cranking okay.

Where do I start...DIS pack? Immobiliser? Fuel pump/relay?

I've a complete '96 V6 Elite (3.0 though) from which I can substitute parts to test, so who has ideas where to look?

I really want to get this old girl running again because sadly I prefer her to the 27000 mile 3.2 Elite I bought a couple of weeks later....what a muppet I must be!

Thanks for helping,

Julian

5

Omega General Help / Re: 3.0 V6 Engine cutting out

« on: 12 July 2010, 22:58:57 »

Thanks everyone, I'll follow the advice and let you know. Not bad if that's the first sensor thats failed in 115k.

Appreciate the help.

J

6

Omega General Help / Re: 3.0 V6 Engine cutting out

« on: 12 July 2010, 22:17:45 »

Great, thanks for the tip on any replacement...I try to avoid my local dealer where possible!

Do I understand correctly - my flash sequence would be 10 10 1 9 ?

7

Omega General Help / Re: 3.0 V6 Engine cutting out

« on: 12 July 2010, 22:02:46 »

....I had a feeling somone might say that! Would that generate a purely random pattern of cutting out?

8

Omega General Help / 3.0 V6 Engine cutting out

« on: 12 July 2010, 21:47:55 »

Hello All,

Can anyone give me some pointers on a problem with my 1996 Elite 3.0L please?
115k miles. Engine fully maintained, never previously misfired/stalled and never runs roughly.

These two occurences may not be linked, however....

On a 200 mile round trip last week - all motorway & A-road -  I'm certain I heard a loud knock/thump, with an accompanying momentary judder about 10 minutes into both the outward and return trips. (if it makes any difference, it was quite a warm/hot day)

On the way back I stopped to refuel, and shortly afterwards the engine simply switched off, at motorway speed. I noticed the display screen messaged "AUTOMATIC --------". Unfortunately as the segments have failed I couldn't read the second word.

It turned over normally but no hint of firing, however after allowing 25-30 minutes (awaiting recovery) it started quite normally, and I returned 20 miles or so home.

The next day I went out locally and again it cut out when thoroughly warm, this time when ticking over and once again only fired up once it had cooled a little and/or 25 minutes or so had passed. (No on-screen message this time, and no warning lights).

It looked to me as if the temperature guage was slightly higher than usual so I suspected that at the point it should be switching on the cooling the fans it was shutting off the engine instead, so yesterday (a hot day) I warmed it up fully then opened up the throttles to 1500 RPM with all the electrics running to simulate load, and it ran through around a dozen heating up - fans on - cooling cycles with no problem at all, and no unusual noises.

So, where do I look?

Is there a chance that the Autobox could shut the engine down to protect itself from damage if, for instance, it had some kind of oil flow restriction or blockage? I can't simulate a hot 'box runnning it in the drive, and don't really fancy testing it again on the road if I know it could stop anywhere!

I guess someone's going to have come across this fault, so over to you Folks...

Cheers,

Julian

9

Omega General Help / Re: Heater matrix - thanks!!

« on: 18 March 2010, 22:51:49 »

Yes, I see in the "cars for sale" that some 'migs have stellar mileages. Going to have to last, anyway, as the only other car I fancy is the VXR8 Bathurst, but it's out of range for a couple of years price-wise.

Glad I'm not the only one who blanks people with my rear blind - but I save mine for headlight-flashing BMW's and Audi's!!

J

10

Omega General Help / Heater matrix - thanks!!

« on: 10 March 2010, 21:08:06 »

Hi

Just a note of thanks for the help and info regarding changing the heater matrix the "easy" way!

Not a job for the fainthearted, but nothing like the horrendous proceedure detailed by Haines. Thanks to Abiton, whose "cut-line" I followed exactly. You'd never know I'd been there.

I've had the engine out and back in less time than it took me to do this, but nevermind!

Target now is to coax the old girl up to 150K miles.

Thanks again,

J

11

Omega General Help / Re: Heater matrix removal - where to cut

« on: 21 February 2010, 22:34:14 »

Nice one Pete - that was exactly the "missing" picture I was looking for, I can see the l/h hinge bracket in place, so clearly I cut to it's left and leave it intact.

Arrowed instructions are a help too!

I was just congratulating myself today for peeling the vinyl back neatly when it suddenly ripped right up the middle - damn! Still, if it works in the end I don't care too much what it looks like.

Did you buy a dealer replacement matrix in the end, or go for a cheaper import?

Julian

12

Omega General Help / Heater matrix removal - where to cut

« on: 21 February 2010, 21:44:57 »

Hi

Question for "Baron von Drunk-a-lot" and "iainb"....and anyone else who's cut away part of the facia to replace their heater matrix.

When cutting in the area which normally houses the relays/diagnostic plug etc, I can see that effectively I need to cut straight down, pretty much from the corner of the apeture, do I cut to the left of the left-hand fuse cover hinge, thereby leaving it intact and somehow bending it out of the way, or do I cut that off too and repair it afterwards?

I can't quite see on iainb photo's whether he worked around it.

Thanks,

J

13

Newbie Welcome Area / Update......

« on: 21 February 2010, 21:52:14 »

Okay folks,

I've reached the point where I'm about to put a saw through my lovely facia (gulp) and I've switched over to the "General Help" area, where I have a question for anyone who's done this, but especially Baron von Drunk-a-lot and iainb, but all input is welcome.

Think long and hard, measure lots.....but cut only once!!

J

14

Newbie Welcome Area / Re: Hello!

« on: 21 February 2010, 20:30:10 »

........thanks for the warm welcome folks!   

15

Newbie Welcome Area / Re: Hello!

« on: 20 February 2010, 22:09:34 »

Hi Both,

Thanks for the replies....it looks like blown matrix's are common then! Shame - never missed a beat from one end of the country to the other until now. Well, if I'm prepared to forget about the siezed belt tensioner and the blown top hose, anyway! But that 'ain't bad in 60k plus miles