Bvarghese

the car jerks frequently while driving and misses quite a bit. the mechanic says that it is a result of an faulty injector.

I'd understand if this is the cause of the engine missing, can it be the casue of the jerking as well?

i have recently changed the sparks with bosch +4s

1996 Audi A8Q

PaulW

And a check engine light if you had a US bound car.....but Euro spec cars don't.....is there a CAT light on?

Bvarghese

none of the warning lights are on..alothg the car shakes after brief intervals and especially while idling

PaulW

You need to vag-com it and see what comes up

Bvarghese

i just got the sotware... now i need the connector...

any normal seriosl connector wiht an OBDII end should work right?

PaulW

If you're going to use their software, it requires one of their cables for the newer versions to do everything.....or so I understand.

It will pay for itself many, many times over.

And you'll only have to do it once. Sounds like you have a problem that you need to solve.

Acceler8

Another possibility could be your air flow. a warning light might or might not come on if your exhaust isnt doing its job appropriately. Your ECU might be overcompensating for something. I had no warnings come on in my cruiser, but its not as sophisticated as the OBDII. Recently, on my landcruiser, i ran into a problem with my exhaust. The car would shudder ocasionally, it felt like the car was choking. Turns out that the whole system needed replaced. Most of it was blocked with sediment.(Think about the explanation of a heart attack) I would assume that you would get a rich mixture reading on the OBDII if the exhaust is not flowing well.
hope this helps.

matrixabc

I have a post above with some info on this.

skiracer

I thought you were talking about the other drivers ;-)

tozoM8

LOL , I thought the same thing.