Troubleshooting / common fixes Javalins-s Blog — Volkswagen Golf Mk3

28 Янв 2015 | Author: | Комментарии к записи Troubleshooting / common fixes Javalins-s Blog — Volkswagen Golf Mk3 отключены
Temp sensor for gti golf mk3

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Troubleshooting / fixes

This topic up again and again on forums… typically are called “cutting “no tick over” or the most type “car problems,

So here are my basic steps to a Golf MK3. I’ve not on the VR6 or the diesel’s, so these steps are the 1.8 GL and 2l GTI mostly – but applicable to the 1.4 and the 1.6. basic steps are the first to check, and the most likely to be wrong before delving expensive parts changes, or No harm is done by doing the steps, nor are they particularly

These basic steps are for the reasonably competant car DIY’er. If not comfortable doing them – DONT! I’d always suggest a or Bentley’s workshop manual for

Disclaimer: I am not a mechanic. This is the of my knowledge from a few courses, a lot of and some trial and error!

The ;

1) Is an error light on the dash Oil pressure light? If so resolve problems first. Get the codes – VAG (VCDS) com for the VW’s – might an area to start looking at. often than not on the older (aka mk3′s) – no codes

2) Sparkplugs. Look on NGK’s for your model – order the web, or Halfords…

Symptoms: Misfiring (engine like a tractor), misfire at low bad engine pickup, bad fuel etc. Change them the engine COLD (or you can strip out the seats from a hot head), and fit the new by hand first before so you don’t cross thread NGK parts finder

3) HT leads.

as above. VW’s are silly (£20 per lead… 5 required!) – non OE (Original Manufacturer) parts are from GSF Car Parts. Part is “92631F” desc “IGNITION SET-BQ G3 1.6/1.8/2.0 GTI 8V”.

4) cap arm.

Symptoms: as above – all related. Go to VW and get the parts, not expensive. you change them be careful to put the back in the same order(do it one at a and be extremely careful to put the arm and cap back in the same place. Consult a manual for detailed references

5) Air filter. Check and change if

Symptoms: slugglish engine, and MPG

6) Oil Breather pipes. Check the pipes from the engine to the air intake are clear. You can just them off and check them. them for splits and cracks

Symptoms: Can cause stalling and running.

7) Throttle body clean. The body’s can get gunked up – enough to the car idle’ing due to lack of air flow the throttle butterfly is closed. Get carb cleaner and a toothbrush….

RubJonny here who explains it – The later AGG/ADY doesnt one [ISV], instead the idle is by a stepper motor in the throttle this is why on the later cars a throttle body causes the stepper motor puts the car ‘idle’ position, but its all blocked up crud so the expected amount of air get past, so stall.

Symtoms: Bad stalling at idle

8 ) “Vacuum” The later model Golfs use an also called MAF or AMM (air-mass-meter), to the incoming air volume. If there are air after the sensor, the engine not be happy. Disconnect the pipes and check for holes/splits/wear etc.

stalling, misfiring, general running and poor MPG

9) Battery, Check all the connectors are connected, no damage. Check the battery ( 12.5v engine off) and are tight.

Symptoms: Hard cutting out, general

10) Oil filter change. No direct but keeps the engine in good order, cool, etc.


OK so you’ve done the basics… And it doesn’t work…

11) Relays… The ECU and pump relay are known with the mk3′s. Both can running issues / cutting out ECU is relay no. 30 and the Fuel pump is no. Check the parts page on site for the VW part numbers.

Replace seats Volkswagen golf mk3

12) temp sensor… Easy to and cause of engine running problems. Symptoms are engine doesn’t idle happily, lumply but when driven performs well. Couple of places they are located: on the – in the top hose at the front of the engine to the radiator, for the 16v’s to the right in the hoses there.

13) Grounds. the car and turn everything on – lights, fans etc. Measure the between the engine block and the negative terminal. Should be 0.5v. Switch the engine off changing anything. Check the grounds on the front of the engine – should be clean and tidy. the main ground cable the negative post to the engine and chassis.

14) Thermostat. Can be related to in that a stuck thermostat can as an engine that doesn’t up to temperature. For reference the Golf warmup to 90 degrees (C) within of reasonable driving – summer or Should never stay 90 for long. Worth doing temp sensor and t’stat your there – as underheating or could be either.

15) Ignition Coil. These often …, but obviously can.

Symptoms; the engine cut out and/or start misfiring or lack power at low RPM. A coil can show up as an ignition – see steps 2-4 above. Before check the primary and secondary and the supply coil voltage and

16) Airflow meter – if you have one – be on the airbox pipe between the and the intake manifold. Typically Siemens or Hitachi if memory An interesting test is to remove it and the two sensor wires inside with electrical contact Let it dry then refit. If problem then replace the sensor. VW these Air Mass Meter and they are an exchange part. name for the part is a MAF (Mass Air meter). Can be tested with a too – but I found it difficult to see subtle Try this too.

Symptoms: running, can cause loss of at idle or lumpness at low revs and of power at high RPM depending on

Advanced steps….

Final stuff – best in with a reputable garage, as steps can cause issues not correctly. Also, if there are engine faults then probably need a garage to it for you anyway. As always consult a manual first!

17) Crank/Cam These tell the ECU where the is – and give it the timing for injection and The wires get brittle over and with the crank sensor the can get burn’t away with oil temp. (see Here. To the cam – check the wiring from the For the Crank get a torch and look the oil filter and see if you can see the sensor and the wiring. Cutting out, lumpy at low rev’s, poor MPG etc.

18) timing. On the mk3′s this is with the engine off – i.e. timing. Essentially you are checking with the engine in TDC that the is pointing at the correct place. allows the engine to vary the as it warms up and is under load. You need a timing light. See 17 and 18 from this. But don’t your car apart – as he’s his water pump and timing All you need to do is: Lift the drivers front wheel off, the top cambelt cover off and turn the with the engine off but in gear it lines up as shown. Check the plug hole in the gearbox for the maker and then check the possition as shown. Re-assmbly is of taking it apart!

19) Lamda sensor. Ditto but testable on a multimeter. Worth the heater element is working Common issues as above. A set of is very useful for changing the

20) Compression test. Easy to do and show any serious mechanical within the engine – i.e. rings, valve damage, gasket, bad (mechanical as apposed to timing.

21) Oil pressure test. fix anything unless you have the low oil light on – which could be the sensor. But if your in this worth checking you have oil

Thanks for reading…

Replace seats Volkswagen golf mk3


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