erratic acceleration problem - need some advice

[gazprice79]

taken all 4 coils out 1 seemed newer than the other 3 but not taking any chances, would rather replace all 4 why im at it. Now i just gotta find a place that sells some new ones. why is it in this day and age car parts shops are all shut on Sundays!!?

gaz

 

[gazprice79]

Picked up 4 new coils from Audi on way home, they seemed surprised that Seat weren't replacing for free as they'd recalled all there's. Anyway got home fitted the new ones and connected everything back all seems well but im going to order some new spark plugs just incase. Any suggestions on type or part numbers?

 

[gazprice79]

picked up 4 ngk Laser Platinum plugs from Europarts on the way home yesterday fitted them and the new coils. Car seemed fine to begin with, however car has since gone back to missfiring. had it on VAGCOM on way to work keeping an eye on missfires and all 4 where having problems whilst driving and continued whilst parked up in the carpark.

Any suggestions from anyone to tackle this problem as im seriously getting jacked of with the car.

 

[Jacko63]

picked up 4 ngk Laser Platinum plugs from Europarts on the way home yesterday fitted them and the new coils. Car seemed fine to begin with, however car has since gone back to missfiring. had it on VAGCOM on way to work keeping an eye on missfires and all 4 where having problems whilst driving and continued whilst parked up in the carpark.

Any suggestions from anyone to tackle this problem as im seriously getting jacked of with the car.

Hi,

I've a similar problem:

2007 Leon TDi: @ 2000rpm and 60mph in 5th, car chuggs slightly. When I accelerate the pick-up seems fine but when cruising problem comes back.

Vehicle has been dealer serviced since new every 10000 miles and cam-belt was changed @ 80000. Just had a new fuel filter fitted and initially felt ok but again when cruising chugging is back! After reading the thread I'm wondering if any other ideas other than the coils may come up.

 

[gazprice79]

Quick update - replaced all coil packs and spark plugs.

however still juddering/miss firing so booked it into Awesome GTI for them to have a look at it so dropped it with them weds night, rang them thursday see how they were getting on they had it on rolling road and no problems however the mechanic went out on the road and instantly started noticing the fault. they've been tweaking and playing withit since and checked all sensors and still cant find the prob so they rang me to inform me that they think its something internal. so now there going to start stripping engine down checking injectors and either sticky springs or valves.

 

[manhota]

Quick update - replaced all coil packs and spark plugs.

however still juddering/miss firing so booked it into Awesome GTI for them to have a look at it so dropped it with them weds night, rang them thursday see how they were getting on they had it on rolling road and no problems however the mechanic went out on the road and instantly started noticing the fault. they've been tweaking and playing withit since and checked all sensors and still cant find the prob so they rang me to inform me that they think its something internal. so now there going to start stripping engine down checking injectors and either sticky springs or valves.

It will be the injectors just my opinion the fault with them can't always be picked, or it could be carbon build up on the valves a good clean or a good blast could clear it up a little.

 

[gazprice79]

Its had plenty of good blasts ha ha see what they say. has anyone else had these parts replaced and just so im prepared how much have they had to fork out if out of warranty like me?

 

[robdf2]

picked up 4 ngk Laser Platinum plugs from Europarts on the way home yesterday fitted them and the new coils. Car seemed fine to begin with, however car has since gone back to missfiring. had it on VAGCOM on way to work keeping an eye on missfires and all 4 where having problems whilst driving and continued whilst parked up in the carpark.

Any suggestions from anyone to tackle this problem as im seriously getting jacked of with the car.

are the plugs the 4 pronged ones?
if they are they are not reccomended

stick with the oem seat plugs they are fine even on modded cars

 

[gazprice79]

Yep there OEM from seat

 

[Jacko63]

Just for information and hopefully will provide some assistance;

My chugging problem was caused by a damaged lower intercooler pipe causing an air leak into the induction system. Pipe replaced and all good (£150 to resolve it!)

Hope this is of help!

 

[robdf2]

Just for information and hopefully will provide some assistance;

My chugging problem was caused by a damaged lower intercooler pipe causing an air leak into the induction system. Pipe replaced and all good (£150 to resolve it!)

Hope this is of help!

is that the left intercooler pipe or right? and is it the solid or rubber pipe? ta

 

[Jacko63]

Hi robdf2,

It's the lower intercooler pipe on drivers side. Not sure of material though...invoice states parts as follows:

E1J0145769H 2 X 0.77p
E1K0145832b 1 X 49.39

Hope that helps !

 

[gazprice79]

Thanks for that info pal not sure if it's the same problem as mine as from what I can tell yours is a diesel but something to think about.

Nearly 5 weeks now with out the motor

 

[robdf2]

Thanks for that info pal not sure if it's the same problem as mine as from what I can tell yours is a diesel but something to think about.

Nearly 5 weeks now with out the motor

keep in there mate , i know how frustrating these things can be.
my local SEAT dealer took 6 months to diagnose a faulty valve in my cylinder head after been told numerous times there is nothing wrong ith my car , plus taking 13 weeks to change it because they didnt know how !

so 5 weeks may seem a lot but it could be worse mate !
just out of intrest what are they charging you? a daily rate or just time worked on the car?

cheers for the info jacko

 

[Lee M]

Hi all

Another problem.

this does not happen at idle or on acclerarion its only on keeping the speed/rpm at a level i,e doing 30 mph in 4th or 3rd gear between 1500 rpm and 2500 rpm is when it feels most, it just feels like the car jerks slightly rpm needle fluctuates up and down about 50 to 100 rpms max at the moment, its not making the engine jump out the bonnet or anything but i know its there and its just started to happen.

Theres zero mods on the car and its just had its major 40 k service at seat 1500 miles ago.

Its booked into midland vw for weds morning.

any ideas what this could be? DV valve/spark plugs/coilpack etc.

You've described above exactly what my car is doing...............

It did it more aggressivly today and brought up a random misfire and cylinder 1 misfire error code on vag com. I think i'll give a coil pack a go on cylinder 1 and see if it cures it.

 

[gazprice79]

phoned Awesome again today for an update as the last i heard was on wednesday they were investigating the an air leak possibly on the inlet manifold which they thought had been removed at some stage and wanted permission to remove and investigate. anyway needs less to say dont know yet as the mechanic was off till weds.

ps to answer your question Rob there charging by the hour thank god! but as yet no info of how many hours

 

[DCNI]

HEEEELP, mine does this too. Would they be covered under warranty? A vag scan at the dealer was clear but something's not right.

 

[gazprice79]

Spoke to garage today and it wasn't the intake manifold so now there tryin the fuel pump in the petrol tank apparently, said I'd buzz them back on fri.

 

[robdf2]

Spoke to garage today and it wasn't the intake manifold so now there tryin the fuel pump in the petrol tank apparently, said I'd buzz them back on fri.

Sounds good news mate , im sure i have seen a revised pick up pump for the fuel tank.
Hopefully it is just that.

 

[gazprice79]

we will see not holding my breath as they changed and checked pretty much everythin else on the motor.

they said the Tarox Golf mk5 they got in with a extremely simular problem to mine had its head removed and sent away for examination came back nowt wrong with it either, banging heads and brick walls springs to mind.