Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: DavidC on 28 March 2008, 16:53:39

Title: MV6 Advice on performance
Post by: DavidC on 28 March 2008, 16:53:39
Hi,

I have just bought a ex police 3 litre MV6 manual.  I just have a couple of questions if anyone can help.

Firstly the engine management light is flickering.  It flickers more when idle and is more constant under speed.  I also find the V6 a little slow off the mark, it seems to almost be holding back but not quite as bad as that.   The only odd thing is that in 3rd and 4th it pulls like a train, good enough in fact to stay ahead of my brother S60 T5 which I think on paper is 40bhp more than a Mv6.  

I am just off to do the paperclip test but any feedback is much appreciated!

Thanks,

David
Title: Re: MV6 Advice on performance
Post by: DavidC on 28 March 2008, 17:06:58
Hi,

I got a code 16 - knock signal circuit 1 which means not alot to me lol
Title: Re: MV6 Advice on performance
Post by: hotel21 on 28 March 2008, 17:29:12
Not sure on the management light thing or the knock sensor fault, but someone will advise later, no doubt...

As to the car being 'flat' on initial acceleration, does it pick up around 4.5k revs?  If so, probably inoperative multirams.  Check out the following...

http://www.omegaowners.com/forum/YaBB.pl?num=1153840176

http://www.omegaowners.com/forum/YaBB.pl?num=1152565204

also check the breather system...

http://www.omegaowners.com/forum/YaBB.pl?num=1152598350

Perhaps most important of all, when were the cambelt and tensioners changed?  Needs done at 40k miles/4 years without fail.  A good DVD available in the OOF shop for a few quid, if you are any way competent....

Welcome to OOF, by the way!!   :y
Title: Re: MV6 Advice on performance
Post by: Tony H on 28 March 2008, 17:45:39
The Miggy is not really noted as being very quick off the mark its a heavy car at 1.7 tons, you will notice better pull at mid range with the multi ram system.one thing is that once they have got going they just keep pulling :y
Title: Re: MV6 Advice on performance
Post by: DavidC on 28 March 2008, 17:52:21
Hi,

Thanks for the replies  :y

I agree it is a heavy car, I just upgraded from an auto 850 T5 which was a lump.

There is something def wrong, it is a dog under 4k but once it is there it goes like stink, I would say as good as the T5 if not better as it seems to have loads more torque.  

Title: Re: MV6 Advice on performance
Post by: hotel21 on 28 March 2008, 17:56:37
4k rev slow?  Sounds like multirams.... :y
Title: Re: MV6 Advice on performance
Post by: markey mark on 28 March 2008, 18:00:09
check all vac pipes as well matey there is a guide in maintance section !! :y
Title: Re: MV6 Advice on performance
Post by: hotel21 on 28 March 2008, 18:00:38
Quote
check all vac pipes as well matey there is a guide in maintance section !! :y

already posted to the thread...   ;)
Title: Re: MV6 Advice on performance
Post by: TheBoy on 28 March 2008, 20:59:10
Knock sensor, drivers side. Won't run to well with that error!

Look for damage to cable.
Title: Re: MV6 Advice on performance
Post by: DavidC on 28 March 2008, 21:42:50
Where abouts is the knock sensor, i read it is at the back of the engine?  Do I need to remove anything to access it?

Thanks!
Title: Re: MV6 Advice on performance
Post by: TheBoy on 28 March 2008, 21:47:39
Quote
Where abouts is the knock sensor, i read it is at the back of the engine?  Do I need to remove anything to access it?

Thanks!
behind alternator, cable comes up and over alternator, and plugs in around cable try on front of cambelt cover
Title: Re: MV6 Advice on performance
Post by: DavidC on 28 March 2008, 21:58:18
Cheers, i'll check it tomorrow morning.  Just been out in it, funny how many people panic when they see a white omega at night lol
Title: Re: MV6 Advice on performance
Post by: davlad22 on 29 March 2008, 01:26:30
If it's also got the management light on, it might be in 'limp' mode thus restricting performance.

....and tell your brother he bought the wrong car!  ;D
Title: Re: MV6 Advice on performance
Post by: DavidC on 29 March 2008, 01:41:21
Lol for £725 you can't go wrong plus my brother in law is a Vauxhall Mechanic, he'll be getting it once I have finished playing  ;)

Title: Re: MV6 Advice on performance
Post by: luv_my_mv6 on 29 March 2008, 01:41:50
My ex-plod 3.0 manual mv6 is like cr*ap in first gear (max 10mphh) but in second gear I have managed nearly 75mph at thre rev limiter, well, if indeed it has a rev limiter, it was at 7Krpm and still pulling but for fear of blowing the engine I changed to 3rd - im completly dumbfounded with my ex-plod as im sure you are..... if engine management light is on do the paperclip test  ;)
Title: Update
Post by: DavidC on 13 April 2008, 00:55:44
Thought I would update on the work done to the car.

The paperclip test was correct, when connected to the Tech2 gizmo it came out with the same fault(Code 16).  Had the sensor changed and the Cam plus bits done at the same time.  

Now for the good bit, the car goes like stink.  Pulls hard in every gear including 1st and 2nd, even the mechanic commented on how sweet it was :-)  I've been irritating the traction control all day lol  Thanks for all your help!
Title: Re: MV6 Advice on performance
Post by: SP_3.2 on 13 April 2008, 08:44:29
Well done enjoy :y
Title: Re: MV6 Advice on performance
Post by: Darth Loo-knee on 13 April 2008, 10:20:20
Quote
My ex-plod 3.0 manual mv6 is like cr*ap in first gear (max 10mphh) but in second gear I have managed nearly 75mph at thre rev limiter, well, if indeed it has a rev limiter, it was at 7Krpm and still pulling but for fear of blowing the engine I changed to 3rd - im completly dumbfounded with my ex-plod as im sure you are..... if engine management light is on do the paperclip test  ;)

Have I read this right? 10 mph in first gear??
My 3.0 auto in first changes around 45, 2nd then 85, then over 120 as my bottle went.... :-?
Title: Re: MV6 Advice on performance
Post by: Marks DTM Calib on 13 April 2008, 10:30:50
Quote
Quote
My ex-plod 3.0 manual mv6 is like cr*ap in first gear (max 10mphh) but in second gear I have managed nearly 75mph at thre rev limiter, well, if indeed it has a rev limiter, it was at 7Krpm and still pulling but for fear of blowing the engine I changed to 3rd - im completly dumbfounded with my ex-plod as im sure you are..... if engine management light is on do the paperclip test  ;)

Have I read this right? 10 mph in first gear??
My 3.0 auto in first changes around 45, 2nd then 85, then over 120 as my bottle went.... :-?

Its a manual....  :-?
Title: Re: MV6 Advice on performance
Post by: TheBoy on 13 April 2008, 12:44:25
I know plods are geared down due to diff, but I'm sure every manual I've driven could do 20+ in first  :-/
Title: Re: MV6 Advice on performance
Post by: Kevin Wood on 13 April 2008, 12:48:35
Quote
I know plods are geared down due to diff, but I'm sure every manual I've driven could do 20+ in first  :-/

Thie one was obviously a special model for plod caravan holidays in the alps. ;)

Kevin
Title: Re: MV6 Advice on performance
Post by: 106rallye on 13 April 2008, 12:53:59
Quote
I know plods are geared down due to diff, but I'm sure every manual I've driven could do 20+ in first  :-/

my ex plod does 30 odd in first, about 65 in 2nd, 90 in 3rd, 120 in 4th and ive yet to find out what it does in 5th, however one of the ex-owners has a pic of it at 155 at just below 6k rpm.

as for 1st n 2nd gear, 1 can keep up with my mates civic type r which has a book 0-60 in 6.5, so its not that shabby with a good launch!  :y
Title: Re: MV6 Advice on performance
Post by: TheBoy on 13 April 2008, 12:58:41
Quote
Quote
I know plods are geared down due to diff, but I'm sure every manual I've driven could do 20+ in first  :-/

my ex plod does 30 odd in first, about 65 in 2nd, 90 in 3rd, 120 in 4th and ive yet to find out what it does in 5th, however one of the ex-owners has a pic of it at 155 at just below 6k rpm.

as for 1st n 2nd gear, 1 can keep up with my mates civic type r which has a book 0-60 in 6.5, so its not that shabby with a good launch!  :y

Knowing a retail 3.0 manual is around 7 and a quarter seconds, I'd guess the plod ones with LSD may achieve around 7s, maybe just under.

Guess your mate with the Type-R needs to learn how to get the best from it ;)
Title: Re: MV6 Advice on performance
Post by: TheBoy on 13 April 2008, 12:59:23
Oh, but you are indeed right, a 7s 1.7t car is pretty impressive!
Title: Re: MV6 Advice on performance
Post by: Kevin Wood on 13 April 2008, 13:02:52
Quote
Guess your mate with the Type-R needs to learn how to get the best from it ;)

That being to rev the bejeesus out of it... Those engines wake up about the sort of revs where I'm listening for the rev limiter. :o

Kevin
Title: Re: MV6 Advice on performance
Post by: TheBoy on 13 April 2008, 13:06:31
Quote
Quote
Guess your mate with the Type-R needs to learn how to get the best from it ;)

That being to rev the bejeesus out of it... Those engines wake up about the sort of revs where I'm listening for the rev limiter. :o

Kevin
Honda with one of the first to get 100bhp per litre, and they got there by allowing higher revs.  These engines are a bit flat until the nuts are screamed off them.  If 16 small dents don't appear in the bonnet, rev it harder ;D
Title: Re: MV6 Advice on performance
Post by: 106rallye on 13 April 2008, 13:13:27
Quote
Quote
Quote
I know plods are geared down due to diff, but I'm sure every manual I've driven could do 20+ in first  :-/

my ex plod does 30 odd in first, about 65 in 2nd, 90 in 3rd, 120 in 4th and ive yet to find out what it does in 5th, however one of the ex-owners has a pic of it at 155 at just below 6k rpm.

as for 1st n 2nd gear, 1 can keep up with my mates civic type r which has a book 0-60 in 6.5, so its not that shabby with a good launch!  :y

Knowing a retail 3.0 manual is around 7 and a quarter seconds, I'd guess the plod ones with LSD may achieve around 7s, maybe just under.

Guess your mate with the Type-R needs to learn how to get the best from it ;)

would the 7.25 be using TC? with the tc on the 0-60 feels really slow

hes a compitition driver and really good! lol May well have just been a fluke though  :y

Saying that even i was surprised how well the heavy beast does off the line with a proper launch.
Title: Re: MV6 Advice on performance
Post by: 106rallye on 13 April 2008, 13:18:08
Quote
Honda with one of the first to get 100bhp per litre, and they got there by allowing higher revs.  These engines are a bit flat until the nuts are screamed off them.  If 16 small dents don't appear in the bonnet, rev it harder ;D

V-Tech yo! lol

Nothing beats a high revving N/A engine! my rallye's powerband is between 5k and 7.4k as standard.  :y
Title: Re: MV6 Advice on performance
Post by: TheBoy on 13 April 2008, 13:21:31
Quote
Quote
Quote
Quote
I know plods are geared down due to diff, but I'm sure every manual I've driven could do 20+ in first  :-/

my ex plod does 30 odd in first, about 65 in 2nd, 90 in 3rd, 120 in 4th and ive yet to find out what it does in 5th, however one of the ex-owners has a pic of it at 155 at just below 6k rpm.

as for 1st n 2nd gear, 1 can keep up with my mates civic type r which has a book 0-60 in 6.5, so its not that shabby with a good launch!  :y

Knowing a retail 3.0 manual is around 7 and a quarter seconds, I'd guess the plod ones with LSD may achieve around 7s, maybe just under.

Guess your mate with the Type-R needs to learn how to get the best from it ;)

would the 7.25 be using TC? with the tc on the 0-60 feels really slow

hes a compitition driver and really good! lol May well have just been a fluke though  :y

Saying that even i was surprised how well the heavy beast does off the line with a proper launch.
Off, as tiniest bit of wheelspin is not a bad thing - though on the later cars, it shouldn't make a massive difference was you should be well on your way before it starts to kill engine power (it attempts to brake spinning wheel first) if you know how to launch a car properly.
Title: Re: MV6 Advice on performance
Post by: TheBoy on 13 April 2008, 13:23:06
Quote
Quote
Honda with one of the first to get 100bhp per litre, and they got there by allowing higher revs.  These engines are a bit flat until the nuts are screamed off them.  If 16 small dents don't appear in the bonnet, rev it harder ;D

V-Tech yo! lol

Nothing beats a high revving N/A engine! my rallye's powerband is between 5k and 7.4k as standard.  :y
:y

My ZX-10 is nothing below 5k, and starts to come on song around 7k all the way up to 10.5k.  Scares me witless some days  ;D
Title: Re: MV6 Advice on performance
Post by: 106rallye on 13 April 2008, 13:25:43
Quote
Off, as tiniest bit of wheelspin is not a bad thing - though on the later cars, it shouldn't make a massive difference was you should be well on your way before it starts to kill engine power (it attempts to brake spinning wheel first) if you know how to launch a car properly.

THe TC on my 94 car is terrible! if it wasnt that my parents occasionally use the car id just remove the fuse.

Thinking about it the road was slightly damp so that would of went in the rwd's favour, ack who cares, lol its all pub talk anyway!   :y
Title: Re: MV6 Advice on performance
Post by: Kevin Wood on 13 April 2008, 13:56:33
Quote
Off, as tiniest bit of wheelspin is not a bad thing - though on the later cars, it shouldn't make a massive difference was you should be well on your way before it starts to kill engine power (it attempts to brake spinning wheel first) if you know how to launch a car properly.

My 3.2 is still pretty bad with TC on. In my experience, it will have a go with the brakes if you are applying the throttle gradually and everything happens slowly (worked great the when I had to tow a trailer out of a muddy field). In this instance you can hear the ABS pump fire up and feel the brakes binding.

If you're trying to "launch it", however, it just falls on its' nose at the first sign of any slip. If you don't come right off the throttle at this point the power comes in again quite violently, and that unsettles the back end again, so you kangaroo up the road. I can certainly do better with the TC off. Having said that, apply full throttle smoothly in a straight line on a decent road surface and you won't be anywhere near breaking traction on 235s, and you'll get down into the 7's 0-60.

In a manual, of course, the temptation is to dump the clutch a bit too vigourously, and you can always brake traction that way. [smiley=evil.gif]

Kevin