Question about 2002 Volkswagen Beetle Turbo S

1 Answer

My 2 litre petrol beetle has developed a random misfire on cylinder 4. We have replaced the HT lead and spark plug but the problem persists. what else could be causing it?

Posted by on

  • jennablackie Sep 01, 2008

    Hi There.
    About 18 months ago I had the spark plugs replaced on my 2.0 beetle. Shortle after the EML came on and I had the lambda sensors replaced. then the Cat also needed replacing. A few weeks after replacing the lot the light came back on again, since then I have had the sensors and cat replaced around 5 times and about 7-10 days after replacing them the light is back on again. The last time I had the cat & sensors replaced was about 3 months ago now - I dont know what else to do with the car. Any suggestions greatly appreciated.


×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 4 Answers

Its only an idea but the engine management on the early beetles was a bit primative if your confident swap the injectors over from nos 1-4 and then see if the random missfire moves from cylinders 4 to 1 if it does then you have an injector fault if not let me know as i am a vw master -tech hope this helps
as far as jennablackies fault goes it could be as simple as damaged plug leads which would cause a missfire have you got any fault codes because its obviously nothing to do with cat/lamda probes

Posted on Sep 06, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

05 kia Sorrento #5 misfired already replace spark plug coil & injector same code still comes up #5 misfired can someone help me with this problem


you replaced the plug and injector but there is no mention of the HT lead or distributor cap being replaced or checked
It is possible that there is a crack or carbon track inside the cap which is also misfire for that cylinder. HT leads are carbon filled tracks with a wire insert at each end and if that wire fails to make contact with the carbon ( incorrect method of pulling from plug or cap) then the resistance in that lead makes the spark late which results in a misfire report.

Jul 26, 2015 | Kia Cars & Trucks

2 Answers

Code po304 cylinder four misfire on 1999 ford explore sport fuel injected 4.0 litre 2wd


you have a bad spark plug wire on cylinder 4 or your ignition coil
(coil pack) is bad.

here is a good guide to testing coils and wires if you need it
How to Test the Coil Pack Ford 3 0L 3 8L 4 0L 4 2L

Jan 15, 2015 | Ford Cars & Trucks

1 Answer

How to fix a code P0304


The P0304 code means that the cylinder 4 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 4. If the problem persist more tests needs to be done to diagnose problem, see "Possible Causes"

- Faulty spark plug 4
- Clogged or faulty fuel injector 4
- Faulty ignition coil 4
- Fuel injector 4 harness is open or shorted
- Fuel injector 4 circuit poor electrical connection
- Ignition coil 4 harness is open or shorted
- Ignition coil 4 circuit poor electrical connection
- Insufficient cylinder 4 compression
- Incorrect fuel pressure
- Intake air leak
most likely change your spark plugs these should be done every 60,000 km

Jul 13, 2014 | 1998 Kia Sportage

1 Answer

Error code P0300


code po300 refers to random/multiple cylinder/s--misfire/s detected.===causes-- spark plug/s--HT leads /s--injector /s--ignition coil/s--low compression ---wiring
Check that the HT leads are not touching each other causing spark cross over . Ensure that the coil wires are properly connected . From what you have done, I would revisit everything ( all connections ) to ensure that everything is in order including firing order of the leads

Apr 20, 2014 | 1999 Mitsubishi Galant

1 Answer

Code p0300 came up on my 97 olds aurora what does it mean and how do I fix it?


code p0300 refers to random/multiple cylinder/s--misfire detected===causes--spark plug/s--HT lead/s---injector/s--ignition coil/s---low compression---wiring. Most of your mates will tell you to replace the plugs and leads and that may fix it but injectors are a major fault in misfires. So have a pressure test done on the fuel manifold first and check the fuel pump/pressure regulator/filter. If the pump is not producing fuel or the regulator is set too low then the injectors will not deliver the fuel at the correct amount at the right time (misfire- random cylinder). Plugs and leads will cause a constant misfire not every wherever cylinder.

Dec 07, 2013 | Cars & Trucks

2 Answers

Code 303 and 304 and check engine light plugs have not been changed 119.000 miles is it tune up time


P0303....Cylinder 3 Misfire Detected

P0304....Cylinder 4 Misfire Detected

sounds like a new set of HT leads and plugs wouldnt go amiss(fire wires) weird name that fire wires HT stands for high tension leads in proper english .

Mar 07, 2011 | Ford F-150 Cars & Trucks

1 Answer

2007 Volvo XC90 fault codes-ECM P030000, P030100, P030300, P0304000, what do they mean?


first code means random/multiple misfire cylinder (s) detected
second code means misfire detected number 1 cylinder, third code, miss=fire number 3 cylinder fourth code misfire number 4 cylinder
causes can be spark plugs, HT leads, ignition coils, injector, wiring fault, low compression/ engine mechanical fault

Jun 04, 2010 | 2007 Volvo XC90 V8 AWD Sport

1 Answer

Engine light on scanned p0300 po301 and another 1735 or 1755 or 1765 not sure but ignition coil ouput #1


P0300 indicates one of the following
Spark plugs,
Ht Leads,
Injectors.
ignition coil.
low compression
P0301 indicates one of the following on cylinder one
engine mechanical fault (low compression)
wiring.
ignition / fuel
injector.
ECT/MAF sensor.
ECM.

not that i need to tell you but you have a misfire on cylinder one, check the spark plug <> HT lead <> injector <> low compression, as the coil supplies a spark to all cylinders i would rule that out for now apart from a visual check,




Mar 18, 2010 | 2000 Volkswagen Beetle

1 Answer

Engine lopes while idling code 300 runs good driving


Hi there,

If your DTC code is correct, P0300 means: Random/Multiple Cylinder Misfire Detected.

As you have not indicated any codes from 301 - 306, then the computer has not been able to identify which cylinder misfired.

Therefore, you will need to begin checking for possibilities which could trigger the random (or multiple) misfire, which can be anything from:

- air leaks (this can disrupt readings on the engine's computer). Try spaying liquid around the inlet manifolds, check hoses etc for leaks.
- Bad coil (assuming engine has a coilpack)
- Bad or poor spark plugs
- Bad or poor condition HT leads (going to the spark plugs)
- Bad cylinder compression (compression test will confirm this)
- Leaking head gasket (this can also cause bad cylinder compression) - are you losing coolant from your cooling system?

These are just some possibilities...

Cheers,

Scott

Nov 12, 2009 | 2000 Nissan Altima

1 Answer

1999 volkswagen stalled


first check cylinder 1 , spark plug, ht leads, coil,

then clean the trottle body with carb cleaner

if that does not work replace the throttle body, comes complete, and do a basic setting on it with diagnostic machine

Feb 17, 2009 | 1998 Volkswagen Beetle

Not finding what you are looking for?
2002 Volkswagen Beetle Turbo S Logo

294 people viewed this question

Ask a Question

Usually answered in minutes!

Top Volkswagen Experts

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

yadayada
yadayada

Level 3 Expert

61037 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Volkswagen Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...