Joss 9 Report post Posted June 6, 2013 I've hand a minor misfire on the GTA for a while now. Nothing mental just at low rpm when hot and it was only a single misfire at a time. Drive to birmingham and back today and it has got much much worse. Intermittent at idle and low pull away. It's had plugs so I know its a coilpack but is there a way of testing them with a multimeter? I can play swapsys on the front bank but stripping the plenum off can get time consuming especially if you end up doing it 3 times testing the coilpacks on the rear and I don't really want to buy 3 Quote Share this post Link to post Share on other sites
Joss 9 Report post Posted June 6, 2013 No mscf either btw Quote Share this post Link to post Share on other sites
smiffy 99 Report post Posted June 6, 2013 Had this on mine bud, garage plugged it in and it came up with which cylinder was miss firing. Don't know how to test them with multimeter tho. Swap the fronts and backs round then just change one of the fronts(which was one of the backs) and test it, then repeat till fixed. Easiest way round it. 1 Quote Share this post Link to post Share on other sites
Joss 9 Report post Posted June 6, 2013 Plugged it in but nothing. Just can't be arsed to do the same job 6 times Quote Share this post Link to post Share on other sites
smiffy 99 Report post Posted June 6, 2013 Sorry mate read it again just assumed it was one of the backs. Mine started off missing when it was hot and there was a clicking noise from the rear (number 3 I think) then it totally went and sounded like scooby Smaky might know something, hopefully Quote Share this post Link to post Share on other sites
Joss 9 Report post Posted June 8, 2013 1 down and stroke of luck its solved the heavy misfire. Looks like there is another one struggling but not badly atm. Can't be bothered to hunt for it Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted June 8, 2013 No fault code? Then I doubt it's a pack, check the inlet air duct for splits/loose clamps. Quote Share this post Link to post Share on other sites
Joss 9 Report post Posted June 9, 2013 yep... no fault code. Will check it tomorrow for leaks. Cheers mate Quote Share this post Link to post Share on other sites
Joss 9 Report post Posted June 13, 2013 Checked. Nothing. Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted June 14, 2013 Possible MAF failing then. Quote Share this post Link to post Share on other sites
Joss 9 Report post Posted June 17, 2013 Changed that last year. I can check that by unpluging. It so I'll try that later. Cheers mate. I'll keep you posted Quote Share this post Link to post Share on other sites
Joss 9 Report post Posted June 17, 2013 Unplugged for journey home from work. Didn't want to idle properly which is weird as when it happened at spar it ran like a dream with it unplugged. However no misfire. Quote Share this post Link to post Share on other sites
smiffy 99 Report post Posted June 17, 2013 Do you get a clicking noise from the engine bay in time with the misfire? I had a coil pack wire trapped (flattened) underneath the plenum. Only did it when hot and at idle. Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted June 17, 2013 Also trapped wire tend to lead to white smoke, an electrical burnig smell, a blown 30A fuse and total engine shut down. Meanwhile, it sounds more like a MAF issue now you've tested it this way. Quote Share this post Link to post Share on other sites
Joss 9 Report post Posted June 17, 2013 Yeah I'll pick up a jts one and see how it goes. Quote Share this post Link to post Share on other sites
Joss 9 Report post Posted June 29, 2013 Maf swapped. So far so good. Keep you posted cheers mate Quote Share this post Link to post Share on other sites
Joss 9 Report post Posted June 30, 2013 Yep. Fully sorted Quote Share this post Link to post Share on other sites
