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[eddie]

Just skinned my knuckles chainging no.6 plug hoping it woul;d cure very uneven tickover and a definate thrummy engine note when accelerating.  Stinks of unburnt fuel too.
Reason for changing no.6?  Last time I changed plugs I left no.6 till last and it so bloody awkward to get at.........  [smiley=embarassed.gif]
ANyhow,all plugs have now been done but mis-fire still present.
I will do paper clip test (good video how to) and get back.
In the meantime,which is the correct dis-pack for a '99 2.5L.
The ones at the vauxhall parts centre all end at '98 ??

eddie

[JamesV6CDX]

Eddie what were the HT leads like?

[eddie]

Paper clip test only gave 12 and 13(open circuit lambda sensor??).

james....Ignition leads,not sure what you are driving at? They seemed to be ok visually,they haven't been touched for about 3 years.

I should also mention that as well as fuel pong there is also a very strong  'catalytic convertor pong'.

I dont see that a lambda sensor fault would cause one pot to misfire??

Strong leanings towards naffed dis-pack--given the amount of rain we've had in recent months

Anyone advise as to which is the correct dis-pack for a 1999 model 2.5l?

eddie

[pete.h]

Try pulling the leads off the plugs one by one while it's running .  If you loosen them on the plugs first it's easier and use something insulated like wooden or plastic tongs !!  The lead you pull off that doesn't change the engine note is the problem cylinder. If you swap the lead on that plug for one of the others(I mean swap the whole lead from end to end , you have to pick one about the same length), the misfire should move to that cylinder if it's the lead that's the problem. If you've still got the misfire on the original problem cylinder , then it's either the spark pack or something wrong in the cylinder itself. Could also be an injector but if it stinks of fuel it's unlikely, Hope this makes sense it's easier to do than describe !

[eddie]

On a 4 cylinder engine,rearranging the plug leads is fairly easy! On the v6 its nigh on impossible due to the amount of dismantling involved to get at the leads.
As it stands at the moment I can't identify which one is missing anyway!

Anyone know which dis-pack for a '99 model--semi face lift with audio controls on steering wheel.

eddie

[eddie]

I started clearing the way for removing DIS pack today, removed the wiper mechanism cover etc. wiper mechanism itself is all disconnected but a bugger to manouver out!
I can see the top of the DIS pack and it looks in good shape,but looks aint everything.

I,ve realised that the so called code 13 I read on the flash test was in fact code 30 (normal)--so there are no flash codes of any use stored.

Before I start stripping my skin of, are there any other possible causes to a misfire and a very strong pong of unburnt fuel--dis pack,leads and or plugs all taken into account--the misfire is continuous, not intermittent.

Before I go any further I will renew plugs and give it one more try before ripping the DIS out.

eddie

P.S.  Just remembered, when driving (I stopped using it now) the fuel consumption never went above 20mpg.

[eddie]

re-did the paper clip test and I have come to the conclusion that codes I am getting are 31(expected--no rpm) and 21(!),the latter being a highTPS (Throttle position sensor voltage high).

Given the rough running and unburnt fuel smell could this mean that the high TPS voltage is causing too much juice to be injected??

Getting a bit flustered now. :-/

eddie

[feeutfo]

not many replys for the newbie guys, but as said i would check those leads as well. Might be worth a call to vx with your reg and get the part no. For the dis pack from them, if you need it, as it sounds like you have a mini face lift which is not straight forward.

[feeutfo]

ps also helps if your profile is filled in with your location and as much car/engine info as pos.

[Andy B]

.... Might be worth a call to vx with your reg and get the part no. For the dis pack from them, if you need it, as it sounds like you have a mini face lift which is not straight forward.

Vauxhall can not tell you which DIS pack you need even with reg or VIN number. The only way they know which one you have is when you put the old one on the parts desk with bloodied hands!    

[markey mark]

dis pac will be the oval plug type matey ! check your plugs again had one snapped in half the other day !!  

[eddie]

I,ve seen my DIS Pack!

Mounted horizontally on a bracket with a connector on top at one end.

At the mo, I'm struggling with the wiper arm assembley. All retention screws are removed and rattling around in its own little world--trouble is the spigot supporting the motor end is too bloody long and I cant get clearance to remove it. :-/

One useless little thought,has anyone done a static resistance test on a coil pack. Put meter across opposing pairs of leads and read of the resistance. It will surely vary due to the difference in lead lengths but any faults should show either open circuit or disproportionately high.
Any one have a coil pack and leads on the bench at the mo'?

eddie

[Marks DTM Calib]

I,ve seen my DIS Pack!

Mounted horizontally on a bracket with a connector on top at one end.

At the mo, I'm struggling with the wiper arm assembley. All retention screws are removed and rattling around in its own little world--trouble is the spigot supporting the motor end is too bloody long and I cant get clearance to remove it. :-/

One useless little thought,has anyone done a static resistance test on a coil pack. Put meter across opposing pairs of leads and read of the resistance. It will surely vary due to the difference in lead lengths but any faults should show either open circuit or disproportionately high.
Any one have a coil pack and leads on the bench at the mo'?

eddie

Yep

Leads - 2-10K ohm
DIS secondary - 8Kohm
DIS Primary - 2-4ohm


You dont need to remove the wiper motor assembly to get the DIS pack out!

[eddie]

Sheesh! where'd that come from............

Thanks Mark-time to dig out the meter and look technical,doesnt 'alf impress 'the boss'.

So if I pull the connectors on plugs 2 and 5 I 'should' get between 12k and 18k between them. By primary I take it you mean the connector from ECU.

One good thing with this dismantling lark it gives a chance to clean up some of the hidden grotty bits.

eddie

[Marks DTM Calib]

Sheesh! where'd that come from............

Thanks Mark-time to dig out the meter and look technical,doesnt 'alf impress 'the boss'.

eddie

Do be aware that you also need to check the DIS pack condition because if the iron core is rusted and damaged then this will impact on the spark voltage without affecting the resistance.