Boosting Problems & Engine Management Light

[CHRIS200]

Boosting Problems & Engine Management Light **HELP**UPDATED**

Hi All,

Just been out in my LCR and it has just suddenely developed boositing broblems after 3k rpm and it jerks about and then engine management light starts flashing at the same time..??

I have searched but I could not find anything with symptoms like this, any one have any ideas??

Cheers
Chris

 

[f1btn]

In which gear is this? i would get it vag-commed as it could be a few diferent things such as n75,d.v,boost pipes or a couple of different sensors!

 

[CHRIS200]

Its in any gear, but manily 3rd and 4th.
Just taken it somewhere and had the vag-commed, only error was a misfire on cylinder 1. Guy reckons that it is the coil pack

 

[skahigh]

sounds very likely, coil pack on its way out usually causes misfire.

 

[longman]

Sounds like the right symptoms for a coil pack mate. Easy to change and not too expensive either.

 

[RobM]

Another vote for coil pack. Not a dead one, but a dying one. Best get it changed before it does die. Also, it's not uncommon for one to die and cause the others to die shortly after, so another reason to get it sorted quick

 

[CHRIS200]

Thanks for the votes guys.

Thats is exactly whot this chap said. Change all 4 and plugs at the same time if yu can afford it, if not just do yje one for now.

How much are the coil packs?? Euro Car parts are listing two types, I guess one is oriinal and one is a copy, or should I buy from SEAT direct just to make sure that I am getting on OE part??

 

[skahigh]

eurocarparts will probably sell the oe part. if you look at the last number of the product code it indicates whether its oe or better/worse than oe. i think the options are 0,1 and 5 iirc, cant remember which represents oe tho! its on the site somewhere!!!

 

[CHRIS200]

Well just replaced the coil pack and it is better but still getting the hesisitation after 3k rpm on full load and the engine management light.

All I can think of now is to change the plug and see if that has any affect. If not, anyone got any other ideas???

 

[skahigh]

could the light be because there is a fault code that although now fixed needs to be cleared? or possibly more than one coil pack playing up?

 

[CHRIS200]

I don't think so because the fault code was cleared. The error was a misfire on cylinder 1, no other errors and symptoms have returned, although not as bad as before.

Just checking, cylinder 1 is the one nearest the drivers side of the car, far left as you are looking at it..??

I think I will try a new spark plug first before I book it in anywhere or try anything else, unless anyone can think of possible causes??

 

[skahigh]

could try a throttle body alignment? im not sure exactly what it does but people suggest it alot

 

[CHRIS200]

Umm ok. Dunno what that does either but ok lol.

Gonna speak to my expert again tomorrow and see what he says. Hopefully it won't be anything mechanical or too expensive!!

 

[Mitchy]

Flashing engine light is always coilpack failure

When 1 goes, they are more than likely all on their way out.

I had 4 individually go on me within 28days about 3-4 mths back. 4 seperate occasions, each time a differing cylinder.

Your plugs will be fine if you've not driven on them for a sustained period. As long as it was changed within about 5-10 miles your plugs will be fine.

Although saying that, has your car ever had plugs changed? If not done at 40k intervals they'll be needing doing anyway!

Change all 4 coilpacks because they will all let go sooner or later! This is reason why its still running poor, another is on its last legs!!

My advice anyway seeing as i just had exact same thing happen to me!

 

[CHRIS200]

Thanks mate, I think the rest of the coil packs will need doing, just gonna get it all checked out first by my expert before I spend the money. He did say that as one goes and the rest will soon follow.

I had the plugs changed at the service in November and the car has only done 1500 miles since then so I don't think anything will be wrong with them.

Thanks for the advise guys.

 

[Mitchy]

You cant diagnose an ''on its last legs'' coilpack mate.

They just go, there are no ecu warnings via vagcom that will tell you, it just happens!

Worst thing is, if it happens when your miles away from home!

Because your spark plugs are new im 100% confident they'll be fine. I inspected all 4 of mine after coil pack failures and all 4 were just like new.

 

[Mitchy]

BTW coilpacks are a well known fault with vag engines mate, dont hink you've been unlucky, or its a 1 off! Its a well known problem from Audi's/VW/SEAT and Skoda cars.

Change them all and you should get 2-3yrs out of them before they'll be needing doing again!

I do firmly believe it should be part of the 3yr 60k mile service as the fault is so common.

 

[CHRIS200]

I know what you mean mate. When I spoke to my expert he said that it could be a number of thing's but 99.999999% sure that it was the coil pack.

Only thing I am conserned about is that the only error on Sat was the misfire on cylinder 1 and I have changed that coil pack and the problem is still there. Just what too check for any other errors etc etc before I spend the money.

The other strange thing is that the car drives fine as long as you don't floor it. If you just drive it normally it drives and pulls fine even after 3k rpm.

 

[CHRIS200]

I think that as they are that common a problem across the range, VAG should be replacing them free of charge. It is obviousley a manufacturing or design fault.

 

[Mitchy]

Yeah as soon as you put load on it, it will misfire.

Not unless your 'new' replacement of coilpack 1 is dodgy also!

When you replace the others, fit a brand new 1 into number 1, and then fit the 1 you've just removed from number 1 into number 2. If number 2 starts misfiring you'll then know you've got a dodgy coilpack.

Are you still getiing misfire on cylinder 1 though or is it on another cylinder?