Ok just yesterday and today the cossie has be playing up Not surprised its nice warm weather and its goes tits up All the crap weather she was going well

Right then ;

When i have been driven it OFF boost for say about 20/30 mins or so its starts playing up,
I go to put my foot down and it splutters and pops and Banges ALOT also the Rev gauge jumps all over the place It was getting worse ans worse so i go it home and have left it

When ever i have been driven it hard it seems to have been FINE
Could this be a sencer breaking down like the one in the dizzy As this one has been replaced once as it would'nt start ect due to it

Ps its been over fueling for a bit And also has a missfire which has been p!!sing me off a bit as i have tried every thing i can think of
When i got the car is was running very poor and turns out the CAM BELT was 1 tooth out on one of the vernor pully so it may have damaged a value or some thing (have'nt removed the head yet) could this bee the missfire ???


Any help ??? thing to look for ???

 

Have you checked your engine bay? Filler cap maybe loose if it Pops and Bangs, could b loosing oil?

 

JimRS, Well i have'nt but i will
Also the compession is down to ; 90/80/80/90 So its Low but with in 10% ??? so i have been told

It seems when its hot or hot weather

 

sounds like crank position sensor is failing - this is on the front of the timing case cover under the crank pully - check that it isnt caked in much and that the wiring isn't broken as it gets very brittle with age, clean the sensor head up as if there are any metallic bits on this, then it will sence them as its just a proximity sensor at the end of the day

 

I had fort of this as i had a simaler case on a 2lt twincam saff i had 3yrs ago it would cut out all toghter then come back to life

Would the Yb be the as the Twin Can engine then eg sensors braking down in the same way ???

 

only 1 thing m8
s1's rule

you need to get the overfuelling sorted very soon
when shall we get the bonnet?

 

Nigel give me abell im off untill tuesday so when ever you want to pop over m8
If you want to have a look at the cossie for me i'll get the beers in ready

On monday im help the mother and father in-law move In the morning but i can sort some thing out

 

cheack the alternator !!!!!

if its cutting the rev counter and then comes back on and when ya floor it on idle it splitters but if gentle its fine then check that as thats what mine was

 

Ginge It drives ok untill yo put your foot down
When sat on idle its fine rev it its Poping and Banging

So tested it to see whot voltage its putting out yer I must admit it was'nt pulling over 60 ish coming back due to it cutting the revs

 

check your coil mate

could be playing up and dont the rev countre run off this aswell

just change it for a new one if you havent already

my mate had similar problem and thats what it turned out to be

hope that helps

 

Its got a Group A coil m8 ??? Do these play up like the standed ones do from time to time

 

Mines doing exactly the same fine at low revs but accelerate to say between 3 and 4 thou the rev counter shoots up to 7. Gives the odd splutter aswell. I thought my plugs were on the way out again but that didnt explain the rev counter thing

 

herb, Thats about right m8 3 and 4k the rev counters all over the palace
Well i put a new set of plugs in it 2wks ago so far it had new ever thing ??
Unless its a power draain like Ginge said try or the carank sensor playing up

 

ok is it cutting the power liek a boost limit cut, if so test the altanator with the lights on at 3k rpm, the power should be over 12v, if its lower like mine was the alts not giving the bat the charge and so the ecu is cutting it till it recives it

trust me as i keft mine cause when i drive gentle its fine, but on the way back fro central day the batt was totally dead ( mind was racing on te A407 for a few miles ay a steady pace, me pother mate melted his piston and done his headgasket there too

 

Well looks like im going to be busy tomorrow then Yes Ginge that makes sence Ps on the way to central day i got 150mph (clock reading and i was well happy with that ) out my cossie when passed the old bill @ 140 tho 6;25am you just sore there heads turn And me going S!!T whot they doing out this time of the morning Mind you i was doing 90mph above the limit
The resst of the way was with my m8 in his escos doing the speed limits like good boys

 

dont know anyonewho had problems with the grp a mate so that should eliminate my theory

id with the alternator idea first as mentioned

also check your connectors behind the battery where the engine loom plugs in

a long shot like but on my cossie the connectors kept coming apart due to being broken clips and that gave me the same signs

crank sensor if playing up would i think play up while driving slow aswell as fast but worth a shot

oh god how i miss cossie owner ship got all this to come again soon

hope you find it mate good luck

 

Check the wiring from the negative terminal of the coil (i.e. green wiring).

It splits into 2, one wire goes off to the revcounter (through a filter if it's like my Cossie loom) and the other one goes to the ECU. I have exactly the same symptoms as you guys and I have replaced CPS and checked that side of things out with a multimeter.

I replaced ignition amplifier module, ECU itself, checked Pectel board, replaced the coil with another one to see if that was the cause (it wasn't and coil is working properly on another Cossie) and I've now resorted to removing the engine loom completely to see if I can locate where the fault is.

The trouble is my car started off with the misfiring, then it misfired and cut out and now it won't spark when turning over, even though the injectors etc. are firing (meaning the new CPS is working - confirmed as we tested it when turning over). It intermittently fires up as well when fiddling with the wiring meaning that I've got a break in the loom somewhere!

Hopefully you'll find your problem easier than I'm finding mine though!

Cheers,

Andy

 

mine was confirmed as being the alt not givign enough charge


mine in saying that i still aint changed it or even took the dead batt out for charging

 

M8 check the sencor thingy that goes into the dizzy as mine when down when i got the car 4 days after infact you lose the spark totaly i got a second hand one and had that put in and its be fine untill this wkend about months ago now i think ???
Im thinking mine maybe braking down again As aparntly thats wont it does it slowly brakes down then goes all toghter I towed mine up and down the road and tried the fuel trip switch every thing

Now i have problems again

Hope you sort it

 

Ginge i did the same thing with my s1 then 1 1/2 months later i toke it down essex to my mum and dads to work on it ect and turn out to be a simple thing like the metering unit All the time not doing any thing to it it turns out to be as simple as that

So im going to try and sort the cossie as soon asap as its up for mot now anyway

 

[quote="Alan s1"]

When ever i have been driven it hard it seems to have been FINE

Ps its been over fueling for a bit And also has a missfire which has been p!!sing me off a bit as i have tried every thing i can think of
quote]


driving it hard why it's running like that.................................


tut, tut, your lucky you only have a missfire

get it sorted ASAP.
(remember it Middx RSOC tomorrow)

 

It needs a full rebuild anyway Guzzer as the compression is down quite abit Cly1 90Cyl2 80Cly3 80 Cly490psi Should be more like 110/120 ???

 

Hey Alan - when you say sensor thingy do you mean the ignition amplifier module (has the largest plug on the loom except for the ECU, 7 pin plug), if you do I've tested it on another car and it works fine and to verify it I bought a new one and it wasn't that.

I've got a strong suspicion it's an earth problem but could also possibly be the rpm signal to the ECU.

Cheers,

Andy

 

The PHASE SENCOR in the dizzy I beleave thats whot its called as mine had a chip out the plug that clip on it so the garage replaced it and it was running fine

I was told there not cheap as he manged to get a second hnd one of a m8

Worth looking @ as the controls the spark ect

 

OK mate - cool, I've found considerable damage to the connector on the end of my loom for my phase/cam sensor, although I have several spare connectors from an XR2i injector rail which are in good condition so i can solder one of those on instead

Cheers,

Andy

 

andyhardy, This sensor is inside the dizzy m8

This is the only pic i could find its the little black sencer coming out yhe sid