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nick0323

Polo 9N faults

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nick0323

Hi, I have been the owner of a Polo 9N 1.2 12V (65PS - 2002) for 7 years now. I purchased the car from an official VW dealer so it came with one years comprehensive warranty and one years comprehensive break down cover with RAC.

I've had a fair few issues with this car and I thought this could be quite a useful knowledge base for 9N owners since I can't see any pinned or lying around. I haven't put this in the suspension or engine section as it applies to both.

...................................................

Where to start!

Replaced under Warranty

Timing chain & tensioner kit - The engine idle started dipping sporadically when sitting at traffic lights
Front Anti-roll bar kit - You'll hear a knocking noise.
Front Windscreen wiper linkage kit - Well the windscreen wiper will move at a snails pace

23/09/09

Ignition Coils (3 pot / 4 pot engines)

There is an ignition coil per cylinder on the Polo mk6 and onwards. Some people have been having issues with them in which they tend to die just before 50k. They aren't really a common fault and should simply be changed every 40k as my own personal recommendation. I have a 3 pot engine so I need three of them and they cost around £33 each and are a doddle to change, save yourself the unnecessary breakdown call out.

This is covered under the extended warranty but would prove more costly to take a day off work for a part that you can change in 1 minute, and you should do all three, however only the affected ignition coil will be replaced under warranty.

1.2 12V timing chain tensioner (3 pot engines)

You 3 pot owners shouldn't ever have to change your timing chain and tensioner in your cars lifetime however the timing chain tensioner has been known become slack at around 50k. The idle on 3 pot engines isn't exactly smooth no thanks to the design of the engine and the lack of an idle control valve but should your idle dip below 600rpm on occasion then its just a matter of time before the tensioner gives up.

Generally speaking it will happen when starting the engine, the tensioner becomes slack, the cams shift a notch or two and this prevents you from starting the engine. This is a known common fault and a good VW garage will honour the warranty, otherwise its an expensive job as the side of the engine and the oil sump has to come off!

Front lower rear wishbone bushes (3 pot / 4 pot engines)

Not covered under warranty as its a 'wear n tear' part. A VW garage will charge you over two £200 as the wishbone has to come off and the wheel alignment will have to be done again. A suggestion for all 9N owners would be to get a set of polyurethane bushes in there to ensure long life...this also sorts out the body roll associated with the front end of the car.

If one bush has gone and the other looks fine, please don't be fooled. The other one will come back to haunt you in a few months time. A local garage will charge you under £100 excluding wheel alignment. The polyurethane bushes are a doddle to fit in compared to the very soft standard bush. Same polyurethane theory on curing body roll applies to your rear axle bushes however those bushes don't tend to rip.

Front Anti-Roll bar (3 pot / 4 pot engines)

At around the time of changing the dogbone bush I noticed marks on the underside of my car where the anti-roll bar has been knocking...this was strange to me as I've never heard a knocking noise before. My mechanic knocked the ARB back into place and put in some cable ties so we could tell if it had shifted a month later...well one week later I could hear it knocking and when I inspected the ARB a plastic element had falled off the ARB!

Took the car straight to VW before any serious damage was done and they will replace the entire front ARB kit under warranty. If you are not under warranty then you will have to pay for this to be done.

CV Joint (3 pot / 4 pot engines)

Again not a common fault, local garage will charge you about £60 for parts and labour. sorted, just waiting to be dissappointed from the other CV joint.

Interior rattles

Well lets say the interior is a pile of doo doo compared with the Polo mk5 or a Lupo however the materials last longer as there is less fabric used. Generally speaking you will want to install a sub otherwise the rattles will get on your nerves very quickly. I had a tiny rattle when I bought the car which wasn't noticeable and it just got worse day by day. Cheap plastic for the win.

04/07/11

Starter Motor

Typical! It went with zero warning, and it wouldn't even tick over, absolutely gutted. Parked on a hill luckily so I bump started it and got it home. Took the motor to a specialist and he said it had been refurbished before but the earth hadn't been grounded out properly.

On the basis that it was refurbished before I'm guessing they don't last too long!

Subframes

Nuts are made of cheese...you heard correct! The thread will go very easily, I've had to replace both Wishbone arms and take the subframe off, remove a nut and weld a new nut in to hold my gearbox mount. Expensive work...

Moral of the story, if you are going to replace your wishbone bushes...do it right the first time round and get some hardened ones in there!!!

...................................................

Please feel free to add any other common faults I haven't mentioned, I'm confident there are more that I have yet to experience, and I wonder why VW's only come with a 3 year warranty from new! But if you have to buy a newish Polo aged from 2002 onwards...make sure its from a VW dealer! The warranty has saved me bucks!

Other than that...happy sailing.

Edited by nick0323

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Sep_rider

Good write up for sure.

Just sat here with my fingers crossed ,touching wood.

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nick0323

Here are a few more faults I've been reading about which I have yet to encounter.

EGR Valve (3 pot engines)

This only applies to some unlucky sods...thankfully I'm not one of them.

Lambda Sensor (3 pot / 4 pot engines)

Never happened to me. Usually you tend to get an Engine Management Light over this. Only way to tell is to get a computer diagnostic. Not a common fault but can happen to a few people.

Edited by nick0323

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nick0323

Car Survery - Polo 1.2/1.4

This might also be useful...

About 80% of owners of a Polo 1.2/1.4 have had nothing but problems.

Guess all I can say is I've been rather lucky-ish.

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picki

i wouldnt like to be your pocket over the next few months if youve had so many problems already!

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picki

i must admit, my a3 is kinda boring at times as theres just no noise...but I've head of them reaching 180bhp+ with a decent remap and some minor mods.

although it had to have a water pump changed which was rather costly

there was a lovley 6n2 Tdi CC that someone posted up here for a value....yellow one it was...

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mk7-sarah-c
:paranoid:
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nick0323

facelift woman...I mean model...I mean car.

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Yeti

FAQ'd

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chapmanmx

Has anyone got any more info on the coil pack issues please :-(

Mine seem to have been changed previously as there all different makes but they don't seem to be running right.. I'm assuming there gone again but don't fancy spending £100 odd if it could be something else..

Mines a 1.2 16v and on about 53,000

Any help or advice would be appreciated as my pocket is turning into dust

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nick0323
QUOTE (chapmanmx @ Sunday 13th February 2011 - 7:12pm) <{POST_SNAPBACK}>
Has anyone got any more info on the coil pack issues please sad.gif

Mine seem to have been changed previously as there all different makes but they don't seem to be running right.. I'm assuming there gone again but don't fancy spending £100 odd if it could be something else..

Mines a 1.2 16v and on about 53,000

Any help or advice would be appreciated as my pocket is turning into dust


Hi, apologies for such a late response but I've been in hiding eh.

Haven't heard of a 1.2 16V, you mean a 12V which has 3 cylinders?

At £100 and a job you can do yourself in minutes I'd do it! at least you'll have peace of mind when it comes to breaking down, also keep your old ones as spares!!

Edited by nick0323

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ema.

mine used to eat coils, (1.4 16v) think we changed em twice since i owned it (3year) but previous owner had it from new and changed them on a regular basis.

never had any of the other problems youve got listed here though.

mind you, i have swapped the engine now. (20vt, just had a new turbo, so not sure I'm better off lol )

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afghanisdan

Although I have only had mine six months, I don't appear to have any of these listed faults (Touch Wood :paranoid: )

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nick0323
Although I have only had mine six months, I don't appear to have any of these listed faults (Touch Wood :paranoid: )

So long as you don't live in an area with tonnes of speed bumps, whip your car around corners or wheel slip off the line then the following will be fine...

Rear beam bushes

Front lower rear axle bushes

Dogbone engine mount bush

Anti-Roll bar bush

Just be careful with the bolts and the threads of any part underneath the car as they are made from cheddar cheese. EG if you replace something...replace it with an uprated part (EG bush) which will last a lifetime.

Edited by nick0323

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DrewClayton

i think everything that you have put on this has happened to my car :(

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aaronevans3

I have a 9n 1.4 16v 75bhp model bought the car as a non runner guy had enough of it only payed 600

Now and then when you try and start the car it will turn over but wont fire? sometimes it takes 2 attenps to start it or iv been in a position where it took 3 hours too start!! Any one have any info on this? As vw reckon it could cost me upto a grand to fix :(

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nick0323

I have returned!!! Yes I still have my darn Polo...and I would like to further add to this thread I started!

Driveshafts

(12 years / 80,000 miles) - Both went at the same time, noticeable vibrations at between 40-60mph.

Dogbone Engine Mount (3 pot / 4 pot engines)

(13 years / 85,000 miles) My dogbone mount snapped, this caused the brake vacuum pipe to break and caused a loss of brakes (basically). I had to stop the car with my handbrake. I also discovered this had stretched the flexi-pipe on my downpipe meaning a new downpipe was in order.

Exhaust

First of all I'm pleasantly surprised at how long my exhaust has lasted (13 years / 85,000 miles) compared to my previous Lupo which barely lasted half of that. It's now started to rattle.

FYI...(When should you replace critical parts? (In order of years and my current mileage))

  • Front Lower Rear Wishbone bushes (every 2-4 years depending on speed bumps, or just buy poly's and never change them again)
  • Ignition Coils (4 years / 40k - Please carry 1 spare at all times, TRUST ME!)
  • Dogbone Engine Mount (4 years / 40k)
  • Starter Motor (6 years / 60k)
  • Battery (10 years / 70k)
  • Clutch (12 years / 80k)
  • Driveshafts (12 years / 80k)
  • Exhaust (12 years / 80k)
  • Drum brakes - On the verge of useless (13 years / 86k)

I'll add more as I think of them...

Edited by nick0323
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LeeHodgson

I bought my 2002 polo 1.4 16v 76k last month for £500. When I bought the car he said the ignition coil on cylinder 1 had been changed but needed changing on 2. So I changed the ignition coil engine management light went off 'cylinder 2 misfire'. But also since I've had the car it's idling at around 600rpm and seems to be down on power, but not sure if this is normal as I've just sold my 2008 2.0 Lancer DI-D. Also there is a knocking noise when I accelerate, sounds as though it's coming from the drivers side..

Also the exhaust seems to be noisy but I think that's the flexi pipe on its way out

Somebody help and also if they know what's wrong is it easy or cheap to fix?

Edited by LeeHodgson

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nick0323

It's been 2 years so here's an update...

 

Front control arm bushes changed.

Both front ball joints.

EGR valve (idle is more steady after changing this and the design is completely different! Picture attached)

IMASAF Exhaust system

Washers/grommets which hold up the heat shield etc.

 

And now I have an engine management light which refuses to go away yet the car runs perfectly fine. This came on before the EGR Valve was changed and has been on for 4 months now, so it may just be a faulty sensor.

 

 

 

WP_20161015_14_39_42_Pro_LI2.jpg

WP_20161008_14_02_30_Pro_LI2.jpg

Edited by nick0323

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