Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Lordmpl on 15 October 2007, 10:22:36

Title: Auto Box when Cold Hesitant shifting
Post by: Lordmpl on 15 October 2007, 10:22:36
Hi,

When i first start the car and drive in the mornings, it will not change to second until it warms up, usually by the time i get to the end of the road 3/4 mile.

Is fine any other time, just first thing, Any ideas?????

Thanks, Mark.  :y
Title: Re: Auto Box when Cold Hesitant shifting
Post by: colalowe on 15 October 2007, 10:47:41
I think that the omega has a late gear change when cold to try and warm the engine up quicker, im sure someone will be along soon to confirm or deny soon.  :y
Title: Re: Auto Box when Cold Hesitant shifting
Post by: Andy B on 15 October 2007, 11:19:58
Quote
Hi,

When i first start the car and drive in the mornings, it will not change to second until it warms up, usually by the time i get to the end of the road 3/4 mile.

Is fine any other time, just first thing, Any ideas?????

Thanks, Mark.  :y

They all do that Sir! :y Supposedly to get cats up to temp, you could always use the snow flake button to over ride it. 24v Senators were the same.
Title: Re: Auto Box when Cold Hesitant shifting
Post by: Lordmpl on 15 October 2007, 11:41:57
no worries then, if it ok, i will leave it....

Thanks    :y :y :y
Title: Re: Auto Box when Cold Hesitant shifting
Post by: Pitchfork on 15 October 2007, 11:47:43
Get a Tractor!
They get hotter faster ;)
IW
Title: Re: Auto Box when Cold Hesitant shifting
Post by: Lordmpl on 15 October 2007, 11:54:39
Could do, I saw a cheap John Deer one yesterday, but i have always liked the yellow JCB ones...  :y
Title: Re: Auto Box when Cold Hesitant shifting
Post by: TheBoy on 15 October 2007, 17:43:46
Normal, don't worry about it.  Its to warm the cats quicker to reduce emissions.
Title: Re: Auto Box when Cold Hesitant shifting
Post by: TheBoy on 15 October 2007, 17:44:17
Quote
Get a Tractor!
They get hotter faster ;)
IW
Shouldn't do.  
Title: Re: Auto Box when Cold Hesitant shifting
Post by: VXL V6 on 15 October 2007, 17:46:03
Yep, as said before, hit the snowflake button to force it to change up but remember to disengage it when trying to pull out of a junction!

I often press the button as I hate running a cold engine at high revs until the oil has had a chance to flow.
Title: Re: Auto Box when Cold Hesitant shifting
Post by: TheBoy on 15 October 2007, 17:48:16
Quote
Yep, as said before, hit the snowflake button to force it to change up but remember to disengage it when trying to pull out of a junction!

I often press the button as I hate running a cold engine at high revs until the oil has had a chance to flow.
Remember the snowflake puts excessive strain on the gearbox ;)
Title: Re: Auto Box when Cold Hesitant shifting
Post by: VXL V6 on 15 October 2007, 17:52:41
It puts it into third from what I can tell, I usually drive it up to a speed it would normally change up at then hit the button, it's only on until I get a mile down the road (30 zone) then I knock it off.

As you say, it puts a strain on the box so I don't use it from standstill.  :y
Title: Re: Auto Box when Cold Hesitant shifting
Post by: TheBoy on 15 October 2007, 17:54:13
Quote
It puts it into third from what I can tell, I usually drive it up to a speed it would normally change up at then hit the button, it's only on until I get a mile down the road (30 zone) then I knock it off.

As you say, it puts a strain on the box so I don't use it from standstill.  :y
I would say at 30 it will be straining the box badly as well (30mph would be 2nd normally I reckon)  :-/
Title: Re: Auto Box when Cold Hesitant shifting
Post by: VXL V6 on 15 October 2007, 17:55:16
.....It's all down hill as well!!!! LOL!

Title: Re: Auto Box when Cold Hesitant shifting
Post by: TheBoy on 15 October 2007, 17:56:55
Quote
.....It's all down hill as well!!!! LOL!

LOL, that will help ;D :y
Title: Re: Auto Box when Cold Hesitant shifting
Post by: Pitchfork on 15 October 2007, 18:57:53
Quote
Quote
Get a Tractor!
They get hotter faster ;)
IW
Shouldn't do.  

Mine does, much faster than the 2.0 Petrol that I had for a couple of months after the Diesel was drowned in the floods!
IW
Title: Re: Auto Box when Cold Hesitant shifting
Post by: TheBoy on 15 October 2007, 19:11:22
Quote
Quote
Quote
Get a Tractor!
They get hotter faster ;)
IW
Shouldn't do.  

Mine does, much faster than the 2.0 Petrol that I had for a couple of months after the Diesel was drowned in the floods!
IW
What temps does your tractor:

Cruise at
Reach when booting
Reach in traffic
Title: Re: Auto Box when Cold Hesitant shifting
Post by: Pitchfork on 15 October 2007, 19:13:27
Quote
Quote
Quote
Quote
Get a Tractor!
They get hotter faster ;)
IW
Shouldn't do.  

Mine does, much faster than the 2.0 Petrol that I had for a couple of months after the Diesel was drowned in the floods!
IW
What temps does your tractor:

Cruise at
Reach when booting
Reach in traffic

92.5
100
97.5

Title: Re: Auto Box when Cold Hesitant shifting
Post by: TheBoy on 15 October 2007, 19:18:03
Quote
Quote
Quote
Quote
Quote
Get a Tractor!
They get hotter faster ;)
IW
Shouldn't do.  

Mine does, much faster than the 2.0 Petrol that I had for a couple of months after the Diesel was drowned in the floods!
IW
What temps does your tractor:

Cruise at
Reach when booting
Reach in traffic

92.5
100
97.5

I think it has cooling issues.  100C on the gauge (109C in reality) is dangerously close to its 'safe' zone (The BMW unit is classed safe to 110C).
Title: Re: Auto Box when Cold Hesitant shifting
Post by: Pitchfork on 15 October 2007, 19:30:19
Quote
Quote
Quote
Quote
Quote
Quote
Get a Tractor!
They get hotter faster ;)
IW
Shouldn't do.  

Mine does, much faster than the 2.0 Petrol that I had for a couple of months after the Diesel was drowned in the floods!
IW
What temps does your tractor:

Cruise at
Reach when booting
Reach in traffic

92.5
100
97.5

I think it has cooling issues.  100C on the gauge (109C in reality) is dangerously close to its 'safe' zone (The BMW unit is classed safe to 110C).
By comparison, what are your equivalent temperatures?
IW
Title: Re: Auto Box when Cold Hesitant shifting
Post by: TheBoy on 15 October 2007, 19:33:28
Quote
Quote
Quote
Quote
Quote
Quote
Quote
Get a Tractor!
They get hotter faster ;)
IW
Shouldn't do.  

Mine does, much faster than the 2.0 Petrol that I had for a couple of months after the Diesel was drowned in the floods!
IW
What temps does your tractor:

Cruise at
Reach when booting
Reach in traffic

92.5
100
97.5

I think it has cooling issues.  100C on the gauge (109C in reality) is dangerously close to its 'safe' zone (The BMW unit is classed safe to 110C).
By comparison, what are your equivalent temperatures?
IW
Can't quote cruising yet, as only changed stat yesterday, and not taken for a cruise (old stat 'cruised' at 90/100mph at 85 ish).

Booting: 97 is highest since changed stat (and I don't have my viscous on there at moment)
Traffic: 96 - leccy fans drag back to 94
Title: Re: Auto Box when Cold Hesitant shifting
Post by: Kevin Wood on 15 October 2007, 19:40:15
Quote
(and I don't have my viscous on there at moment)

Is it worth bothering with the viscous fan? They've always seemed a bit wasteful to me.
If the electric fan keeps it under control in this climate I wouldn't bother putting it back. 99% of the time you'll be moving fast enough to get sufficient air flow through the rad anyway.

As long as the tractor has the usual setup of aux. fans that run with the air con on I reckon it's probably superfluous.

Kevin
Title: Re: Auto Box when Cold Hesitant shifting
Post by: TheBoy on 15 October 2007, 20:01:41
Quote
Quote
(and I don't have my viscous on there at moment)

Is it worth bothering with the viscous fan? They've always seemed a bit wasteful to me.
If the electric fan keeps it under control in this climate I wouldn't bother putting it back. 99% of the time you'll be moving fast enough to get sufficient air flow through the rad anyway.

As long as the tractor has the usual setup of aux. fans that run with the air con on I reckon it's probably superfluous.

Kevin
I agree, though since putting a working stat back in it runs slightly warmer...
Title: Re: Auto Box when Cold Hesitant shifting
Post by: Pitchfork on 15 October 2007, 20:27:58
I'm beginning to wonder if my electric fans are kicking in at higher speeds at higher temperatures
I know that they run normally because I have previously taken the grill off to look at them turning
Experimentation required I think!
IW
PS I don't have air-con
Title: Re: Auto Box when Cold Hesitant shifting
Post by: TheBoy on 15 October 2007, 21:04:52
Quote
I'm beginning to wonder if my electric fans are kicking in at higher speeds at higher temperatures
I know that they run normally because I have previously taken the grill off to look at them turning
Experimentation required I think!
IW
PS I don't have air-con
Check they still work - I had a tractor here on Sunday which occasionally suffered overheating. Turns out that the fan switch had failed recently (I had seen them working a few months ago).
Title: Re: Auto Box when Cold Hesitant shifting
Post by: Kevin Wood on 15 October 2007, 23:32:42
Quote
I agree, though since putting a working stat back in it runs slightly warmer...

That's probably just because the stat is now working properly though. Once the radiator has started to struggle to bring the temperature down the stat should be fully open so it's out of the picture. The only thing I wonder is if they put it there to shift heat soak from the turbo under the bonnet but, again, most of the time there'll be plenty of airflow.

Kevin
Title: Re: Auto Box when Cold Hesitant shifting
Post by: TheBoy on 16 October 2007, 08:29:08
Quote
Quote
I agree, though since putting a working stat back in it runs slightly warmer...

That's probably just because the stat is now working properly though. Once the radiator has started to struggle to bring the temperature down the stat should be fully open so it's out of the picture. The only thing I wonder is if they put it there to shift heat soak from the turbo under the bonnet but, again, most of the time there'll be plenty of airflow.

Kevin
They do generate a lot of heat - its a 80C stat, and the operating temp seems to suggest it should run in the 92 - 95C range
Title: Re: Auto Box when Cold Hesitant shifting
Post by: Pitchfork on 16 October 2007, 08:30:14
Quote
Quote
I'm beginning to wonder if my electric fans are kicking in at higher speeds at higher temperatures
I know that they run normally because I have previously taken the grill off to look at them turning
Experimentation required I think!
IW
PS I don't have air-con
Check they still work - I had a tractor here on Sunday which occasionally suffered overheating. Turns out that the fan switch had failed recently (I had seen them working a few months ago).
Am I right in thinking that there are 2 switches?
If so, which one is the low speed & which the high speed?
IW
Title: Re: Auto Box when Cold Hesitant shifting
Post by: TheBoy on 16 October 2007, 09:17:28
Quote
Quote
Quote
I'm beginning to wonder if my electric fans are kicking in at higher speeds at higher temperatures
I know that they run normally because I have previously taken the grill off to look at them turning
Experimentation required I think!
IW
PS I don't have air-con
Check they still work - I had a tractor here on Sunday which occasionally suffered overheating. Turns out that the fan switch had failed recently (I had seen them working a few months ago).
Am I right in thinking that there are 2 switches?
If so, which one is the low speed & which the high speed?
IW
Depends on if you have A/C. If you do, short out the top one, just under top coolant hose, with a paperclip, should bring on low speed fans.
Title: Re: Auto Box when Cold Hesitant shifting
Post by: Pitchfork on 16 October 2007, 09:41:29
I don't have A/C so are there 1 or 2 switches?
I assume that the fans are 2 speed - is this correct?
IW
Title: Re: Auto Box when Cold Hesitant shifting
Post by: TheBoy on 16 October 2007, 17:41:25
Quote
I don't have A/C so are there 1 or 2 switches?
I assume that the fans are 2 speed - is this correct?
IW
Of top of my head, not sure about non a/c cars.  Possibly a single switch with 3 connectors. There is a wiring diag in Haynes if you want to check
Title: Re: Auto Box when Cold Hesitant shifting
Post by: Pitchfork on 16 October 2007, 18:58:57
Can't at moment I'm afraid, my Haynes is safely locked up in Pickfords along with half of my goods & chattels while my house is being underpinned!
Don't expect to be back in until next year sometime given the speed at which the builders are working & all of the other horrors being discovered almost daily as they systematically wreck the place
IW
Title: Re: Auto Box when Cold Hesitant shifting
Post by: TheBoy on 16 October 2007, 20:28:43
Quote
Can't at moment I'm afraid, my Haynes is safely locked up in Pickfords along with half of my goods & chattels while my house is being underpinned!
Don't expect to be back in until next year sometime given the speed at which the builders are working & all of the other horrors being discovered almost daily as they systematically wreck the place
IW
Probably made worse by that power cut in your region yesterday. Where you affected?