gp90se Posted September 21, 2007 Report Share Posted September 21, 2007 my lq1 (92 3.4) has a very slight miss at lower rpm, and maybe top end, but it can't be felt there. New plugs and wires in it, fuel filter, swapped out the coils/mod for known good ones and seafoamed it. there is a little hesitation off idle when cold as well. The car will stall every once in a while, but runs pretty good outside the little issue. thoughts? Is there a way to test coils? Quote Link to comment Share on other sites More sharing options...
Andrew Posted September 21, 2007 Report Share Posted September 21, 2007 you might try cleaning your IAC and MAF. Quote Link to comment Share on other sites More sharing options...
gp90se Posted September 22, 2007 Author Report Share Posted September 22, 2007 IAC is fairly new, and no maf also no o2 sensor, but that wouldnt cause these symtoms Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted September 22, 2007 Report Share Posted September 22, 2007 how are the vacuum lines on there? Quote Link to comment Share on other sites More sharing options...
boulevard Posted September 22, 2007 Report Share Posted September 22, 2007 You can test a coilpack by removing the ignition wire from each spark plug, one at a time. Stick a screwdrive near the opening of the ignition wire if theres spark, its good. Plug the wire back to the spark plug, and continue to the next one. If you don't get a spark or it seems very weak, then you will know whats wrong with your system. Quote Link to comment Share on other sites More sharing options...
gp90se Posted September 22, 2007 Author Report Share Posted September 22, 2007 I'm looking to test how much output im getting from each coil, because they all are firing. the vacuum lines seem to be decent, but I can double check them sooner then later. Quote Link to comment Share on other sites More sharing options...
rockfangd Posted September 22, 2007 Report Share Posted September 22, 2007 wait no o2 sensor? Quote Link to comment Share on other sites More sharing options...
Andrew Posted September 22, 2007 Report Share Posted September 22, 2007 wait no o2 sensor? or MAF ??? Quote Link to comment Share on other sites More sharing options...
gp90se Posted September 22, 2007 Author Report Share Posted September 22, 2007 wait no o2 sensor? or MAF ??? 91-93 3.4 do not have MAF sensors, I think your thinking somthing else wait no o2 sensor? Yea....I gotta put one in one of these days Quote Link to comment Share on other sites More sharing options...
gp90se Posted September 23, 2007 Author Report Share Posted September 23, 2007 TTT there has got to be a good way to test coils Quote Link to comment Share on other sites More sharing options...
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