Z28 Miss
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Joined: Aug 2012
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Z28 Miss I just purchased a 02 Z28 A4. Car is super clean but it has a bit of a miss. I've put a K&N Filter on it and I'm having a tune up done tomorrow(plugs, wires, coils). I'm also having the tranny flushed. Any ideas guys?
plugs / wires should take care of it if your saying you have a misfire. Id wait on the coils... its not very often they go bad.
If you have a way to monitor the misfires, it will make it much easier to diagnose. That way you can replace / focus on parts in those areas. Dielectric grease helps a lot too. Make sure the plugs are gapped correctly.
Come back with more info if that doesnt fix it.
Also try cleaning the maf, there are many how-tos on here... you have to be careful.
If you have a way to monitor the misfires, it will make it much easier to diagnose. That way you can replace / focus on parts in those areas. Dielectric grease helps a lot too. Make sure the plugs are gapped correctly.
Come back with more info if that doesnt fix it.
Also try cleaning the maf, there are many how-tos on here... you have to be careful.
Joined: Nov 2001
Posts: 34,631
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From: Schiller Park, ILL Member: #317
How many miles on the car?
When you say "miss", do you mean an actual misfire code (P0300)/SES light, or just some hesitation during acceleration? Your issue could be fuel related as well (low pressure, fouled injectors, poor A/F ratio due to dirty MAF or marginal O2 sensor(s).
I agree with the above; it would be nice to hook up a scanner and monitor various data, such as misfires and fuel trims.
When you say "miss", do you mean an actual misfire code (P0300)/SES light, or just some hesitation during acceleration? Your issue could be fuel related as well (low pressure, fouled injectors, poor A/F ratio due to dirty MAF or marginal O2 sensor(s).
I agree with the above; it would be nice to hook up a scanner and monitor various data, such as misfires and fuel trims.
