On behalf of a mate MK3 Misfiring between 3.5k/4k

[bockett]

Hi Guys

My mate has a Golf MK3 16v 2.0l Anniversary Edition P Reg.

The problem he is having is between 3.5k/4k its misfiring regardsless of it being at a stand still or in motion?

Any one got any ideas. A diagnostic machine would probably throw a sesnor up just wondered if anyone knew of a common thing on these?

Thanks

[Khare]

my attempt at this is HT leads. Sometimes they underperform at certain revs when they are put under load.

[bockett]

Sorry should of said the HT leads have been replaced but take on board that they could still need checking

[Mikester]

How is the idle? And is absolutly 100% fine at low and high revs. Or just worst at 3-4k?

[bockett]

will need to find out mate not seen it myself. from what he's said i'm to believe everything if fine except revving through 3.5/4k before and after are ok

[locin78]

mine did the same between 3 and 4000 revs check the relays ,fuel and ecu relay. should be 30 and 167 on them one is located on top row second 1 in the other is boom far right on the end , go for a drive if they are warm they r fine if not change them as they naffed. mines all good since i changed them.