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[joshwyatt]

It's quite impressive I think to manage to get all 6 missfiring 
Some will recognise the car and its issues.
James, Jamie and Tunnie have all seen the vehicle, Daz had a look today as well...many thanks to all.
Previously it had only been missfiring on 1-3-5 bank, plugs and coil pack changed...but didn't sort the missfire. Both James and Jamie have used diagnostic tools and checked all the usual stuff.
I don't use the car at all, but today Daz had a look at it, and it's the pedal trick reveals that now it's logged a fault code for the 2-4-6 banks, all codes are below;
0300
0302
0304
0306
0301
0303
0305
So this indicates missfire on every cylinder, the 2-4-6 bank has never been looked at, plugs are unkown and so is coil pack. What could cause a missifre on both banks? I think that must be the route cause of the vehicle's issue.
Symptoms for those who don't know the vehicle, lumpy tickover, then plenum vibrates and shakes even from cold, but once warm gets worse.
Could the common 3.2 pre cat issue explain any of this?
If it's worth it, I'll take a video clip of the vehicle tomorrow when it's stone dead cold so people can see what's what.

[Marks DTM Calib]

Live data on the MAF reading would be one of my first checks

[joshwyatt]

Thanks Mark...that's something I'll look into then.
The thing that confused me a bit was now the 2-4-6 bank is complaning, I very much doubt it's a coincidence so whatever was causing the 1-3-5 missfire has obviously got a little worse.

[Darth Loo-knee]

Has someone had a Tech 2 or computer on the car Josh?

I know for certain that there was a few things not plugged in etc.....

[joshwyatt]

James had plugged his code reader in, then Jamie had used his Tech 2 when I went over to Brackley. At that time, it was only missfiring on 1-3-5, and it hasn't been used since...only moved around a bit...and now the missfire on the 2-4-6 bank has developed.

[TheBoy]

Has someone had a Tech 2 or computer on the car Josh?

I know for certain that there was a few things not plugged in etc.....

Only fault codes were 301 303 305 300, and they wouldn't appear until revs dropped to idle for more than a fews secs....

I know we unplugged some lamdas, certain we plugged them back in, guess its possible we didn't, as it did start to get dark.  Certainly tech2'd it after checking cambelt, and only faultcodes were 1/3/5 misfire

[joshwyatt]

That's exactly what I thought TB, it was only showing 1-3-5, now it's got 2-4-6 aswell, so I guess whatever was causing the1-3-5 issue is now causing the 2-4-6 bank to miss.
I think it was the multi ram bit not connected, Daz got the rear working, but the fronts not working. I'm not bothered about that at all, it's just intriguing that it's now spread to the 2-4-6 bank.

[Darth Loo-knee]

Has someone had a Tech 2 or computer on the car Josh?

I know for certain that there was a few things not plugged in etc.....

Only fault codes were 301 303 305 300, and they wouldn't appear until revs dropped to idle for more than a fews secs....

I know we unplugged some lamdas, certain we plugged them back in, guess its possible we didn't, as it did start to get dark.  Certainly tech2'd it after checking cambelt, and only faultcodes were 1/3/5 misfire

Did you clear them after Jaime? as Josh did the pedal trick and had several codes, so wondering which are right

[TheBoy]

Has someone had a Tech 2 or computer on the car Josh?

I know for certain that there was a few things not plugged in etc.....

Only fault codes were 301 303 305 300, and they wouldn't appear until revs dropped to idle for more than a fews secs....

I know we unplugged some lamdas, certain we plugged them back in, guess its possible we didn't, as it did start to get dark.  Certainly tech2'd it after checking cambelt, and only faultcodes were 1/3/5 misfire

Did you clear them after Jaime? as Josh did the pedal trick and had several codes, so wondering which are right

I thought I did, but it was longer ago than yesterday, and I've probably had some firewater since 

[joshwyatt]

You did clear them TB, to see which one's would return, and I remember you saying something about clearing them right at the end of the night. The emissions light went out, and would flash every so often. It's now on all the time from start up and flashes every so often and then goes back to staying on. It's just the fact that the 2-4-6 bank is missfiring now, as we thought it could be the lambda sensor on the 1-3-5 side, but if it's now missing on the 2-4-6 side I doubt a replacement lambda would sort both sides.

[Darth Loo-knee]

Did you buy this car with these faults Josh?
Did the previous owner tell you about them? if so what did they think was wrong?

I find it difficult to think that after you have changed the coil packs three times with totally different ones that both would suddenly go wrong..... maybe to give The Masters idea of Maf would be worth a try before spending to much money on new sensors...

I am also certain that when Pete came over here and I did his CAT upgrade, his car didn't missfire just had a fault code and light on.... so cant think that would be it either..

[joshwyatt]

Did you buy this car with these faults Josh?
Did the previous owner tell you about them? if so what did they think was wrong?

I find it difficult to think that after you have changed the coil packs three times with totally different ones that both would suddenly go wrong..... maybe to give The Masters idea of Maf would be worth a try before spending to much money on new sensors...

I am also certain that when Pete came over here and I did his CAT upgrade, his car didn't missfire just had a fault code and light on.... so cant think that would be it either..

That's what I was thinking Daz, all the coil packs can't have just died, and now the fact the missfire has developed on the other side aswell, kind of rules out the lambda on one side. So with my limited knowledge, it would make sense for one thing to be effecting both sides. I'll see if I can borrow a 3.2 MAF and swap it over to see if that cures it, or makes it any better. If the MAF was slowly failing it makes sense for it to be getting worse.
I think the biggest problem is as you said to me earlier, the i'fs and buts'...MAF might cure it, lambda might cure it, don't know until I try...but that's possibly spending money unecessarily and still not fixing the fault.

[Darth Loo-knee]

It did seem like an Air Leak to me at first as the tick over was rough as a rough thing....

What I meant was we need to find out what is the problem before throwing money at it blindly if you follow me

[joshwyatt]

It did seem like an Air Leak to me at first as the tick over was rough as a rough thing....

What I meant was we need to find out what is the problem before throwing money at it blindly if you follow me  

Have no fear, the moths in my wallet rarely see daylight 

[albitz]

Couldnt you swap the maf for one from another car just to try to eliminate it Josh? :-/