miss firing

[sh4h99]

hi to all the users and i wish u a very happy new year
can some body please help a friendhe has a vw sharan 2.0 petrol on t plate jus bought about a week ago when ever he reaches about 4000 revs the car miss fires and judders or jidders the cars has covered 167k its quite heavy on fuel and he can some times smell petrol will some one help please what could be the problem could it be the maf or carb
it also cuts out when stopping at a junction or changing gears on motorways he cant rev no more than 4000 revs if he does the car miss fires

thank you

[RickT]

Sounds like a coil pack is on its way out.. these are £25 each, the 2.0 has 4 of them..

Best way to check is to get the car onto VAG-COM and find which cylinder is misfiring...

However if you dont have access and want to risk thinking its a coil pack to start with (thats if all lead and spark plugs are ok)_

Take out coil pack number 1, and insert the new coil pack in number one.. and go for a drive... if no different... replace the exisitng one and then try by putting the new one in cylinder number 2.. and so on to coil pack number 4... - once you have done this and "IF" its better in one postion leave it there...

I would then recoomend reaplcing the other 3 as they will be next to go... or its upto you..

Cheers

RickT

[sh4h99]

hi thank you for your response i will try this i will let you how i get on

thanks

[sh4h99]

Sounds like a coil pack is on its way out.. these are £25 each, the 2.0 has 4 of them..

Best way to check is to get the car onto VAG-COM and find which cylinder is misfiring...

However if you dont have access and want to risk thinking its a coil pack to start with (thats if all lead and spark plugs are ok)_

Take out coil pack number 1, and insert the new coil pack in number one.. and go for a drive... if no different... replace the exisitng one and then try by putting the new one in cylinder number 2.. and so on to coil pack number 4... - once you have done this and "IF" its better in one postion leave it there...

I would then recoomend reaplcing the other 3 as they will be next to go... or its upto you..

Cheers

RickT

hi and thank you rick t very much appreciated wud u please tell me where the coils go in witch part of the engine is it easy can i do it my self or do i need to go to the mecanic and which shop can i get these coils dealers diy shops or where please tell me

thank you

[RickT]

depend on engine... may are on the top of the head... 4 RED square looking thing... (in simple terms) .. on your they may be back like the pic below..

its a case of just undoing the screws holding the leads in place... pull the coil pack out.. and insert new.. reconnect..

Cheers

RicKT

[sh4h99]

hiya mate thanks for telling me how to fix the coils. i went to gsf car parts they said i only have one coil can you please confirm that is rite then they were saying that it cud be the mass air flow or spark plug leads or may be the fuel filter can u ive changed the plugs and want to change the fuel filter but dont know where it is can u please tell me the location of the fuel filter sorry if im bothering you

thank you

[RickT]

hi there...

im not totally clued up on your engine... its shows.... i would of thought you would of than 4 coils packs... but hey... who knows.... lol...

The fuel filters on some VAG cars is under the back seats... you can get to it by lifting a seat and then unscrewing a cap to get to it... how ever on yours im not sure..

i will do some digging for you..

RicKT

[sh4h99]

thanks for all the help uve given me i went and got it checked on the machine the mechanic and he gave me these two codes as follows

00515 hall sender intermittant signal out side

00523 in take air temp sender intermittent this is the mass air flow meter

please can u tell me wat the first one is

thank you

[RickT]

so far i have found the following..


Camshaft Position Sensor (Hall Effect Sensor)-No Signal (G40) :
Check CMP, if OK, replace distributor.

&

Camshaft Position Sensor (Hall Effect Sensor) - Short to B+
(G40) : Check CMP, if OK, replace distributor.

&

Hall Sender works by creating a signal as the shaft of the dizzy spins. It feeds a signal back to the ECU telling it which cylinder is approaching the TDC position and the ECU then uses that information to trigger a host of actions at that moment in time.

Hall Sensors are usually quite reliable (hence the reason they were used) but we do know that they fail due to age (they start to physically break into pieces inside the dizzy). They can also be damaged by voltage spikes, a classic example being when someone takes all the spark plugs out and spins the engine without grounding the king lead from the coil (HT lead). A visual inspection might show physical damage inside the dizzy itself?


&

Hall sender is in the distributor: and oh yes, it would be the cause of your non-starting because the ECU thinks the camshaft/crankshaft is in a different position from where it actually is.

This means the spark is arriving at totally the wrong time. Throw a known good dizzy in and stand back as the engine starts: I think you'll faint when it starts running


&

The hall sensor is inside the distributor. When you get this DTC for the hall sensor short to B+, the distributor must be replaced.


If you have a read of these.... then if your still unsure... do a search in google for the error code followed by VW FAULT CODE

Cheers

RickT

[sh4h99]

hi mate thank you very much with the help your giving me to solve my problems. do u ting that cud be the problem to the revs playing up and how much do u think this part would cost me. jus another thing my brake lights dont work rear lights do work jus the brake lights. when i press the brakes no light and my air bag lights stays on please can u try to help meand again thank you for all uve done for me.

[RickT]

not sure on price...

in regards to the brake lights... its not the switch as when the switch goes the lights say on....

does the center LED light work?

RicKT

[marcos]

Hi everyone, I have the exact same problem with my partners Audi A4 1.6 saloon 1995.

I tried other forums for help but sadly it appears that unless you have the all dancing all singing VAG kit, they don't want to help.
Really nice to see so much help and advice given by RickT.

I will also do as you suggest Rick despite having slightly different code errors.

Mine are


00515 Camshaft position sensor -short to B+(G40) Check CMP, If ok replace distributor
00532 Supply Voltage (B+)
00670 Throttle Position sensor-G127
01247EV AP Canister Purge regulator valver - N80
01249 Cylinder 1-Injector Fault-N30
16486 Mass or volume air flow circuit-low input
16500 Engine coolant temperature circuit-range/performance problem 18010Power supply (B+) Terminal 30-Low Voltage

But from what you have already explained it now at least makes some sense to me lol

My regards

Marcos:D