skinner2k3 3 Posted July 30, 2007 My 1900 8v has had this problem since I installed it. When driving at a constant speed the engine has a slight miss. It is worse the higher up the rev range you go. I notice it the most about 3k as this is often where the revs are during normal driving. It doesnt seem to do it when accelerating, or at least I dont notice it. I guess its some electrical gremlin. I have replaced the HT leads, Rotor arm, cap and spark plugs. Its the standard late management with the coil bolted to the inlet and an ignition amp on the inner wing. Looking on other threads I plan to check the injector plugs, earth points, chop out that brown multiplug and try and find another ign amp. Is there anything else I should try? Thanks Share this post Link to post Share on other sites
Richie-Van-GTi 71 2 Cars Posted July 30, 2007 more than likely the coil or ignition amp. Share this post Link to post Share on other sites
DamirGTI 342 Posted July 30, 2007 more than likely the coil or ignition amp. ditto ! (ignition amp. can cause a lot of strange el. problems ) cheers Damir Share this post Link to post Share on other sites
skinner2k3 3 Posted July 30, 2007 Thanks, Anyone got an ignition amp which they know works and dont need? I seem to remember the wires from the hall sender to the amp are a bit scruffy also, is it very difficult to open up the dizzy and replace them? Cheers Ben Share this post Link to post Share on other sites
welshpug 1,657 Posted July 30, 2007 you dont need to open up the dizzy, they're plugged into the side and the plug is secured by a screw. Share this post Link to post Share on other sites
skinner2k3 3 Posted July 31, 2007 you dont need to open up the dizzy, they're plugged into the side and the plug is secured by a screw. I did notice the screw but was brave enough to undo it I have a 1600 dizzy I could nick that sensor from, assuming they are the same. Last night I checked all the injector plugs, cleaned all the earths and removed the amp and cleaned up the back plate. Also removed the brown multiplug and butt crimped all the wires. Good news is it still worked after, bad news it didnt solve the problem. Did notice it shuddered more after corners......and the fuel is pretty low Trouble is I dont know how low because one minute the guage says 1/4 then the needle drops to empty. Going by how much I last put in and how many miles I have done I should have some left. Might try and half fill the tank before I take much more apart. Share this post Link to post Share on other sites
DamirGTI 342 Posted July 31, 2007 (edited) I did notice the screw but was brave enough to undo it I have a 1600 dizzy I could nick that sensor from, assuming they are the same. Last night I checked all the injector plugs, cleaned all the earths and removed the amp and cleaned up the back plate. Also removed the brown multiplug and butt crimped all the wires. Good news is it still worked after, bad news it didnt solve the problem. Did notice it shuddered more after corners......and the fuel is pretty low Trouble is I dont know how low because one minute the guage says 1/4 then the needle drops to empty. Going by how much I last put in and how many miles I have done I should have some left. Might try and half fill the tank before I take much more apart. Hi ! Did you re-apply the thermal paste (heat sink compound) behind on the ignition amp. surface and back plate ? if there's no (or if it's dried out ..) this thermal/heat sink paste then the amp. will overheat and cause misfire and some other strange electric gremlins/problems in ignition circuit ... Damir Edited July 31, 2007 by DamirGTI Share this post Link to post Share on other sites
skinner2k3 3 Posted July 31, 2007 Hi ! Did you re-apply the thermal paste (heat sink compound) behind on the ignition amp. surface and back plate ? if there's no (or if it's dried out ..) this thermal/heat sink paste then the amp. will overheat and cause misfire and some other strange electric gremlins/problems in ignition circuit ... Damir No I didnt. Its completely dry. For a while I thought cleaning it up had solved it but then the shuddering started. Obviously started once the amp heated up. I guess peugeot can supply heat sink compound?? Or can I get the stuff from your average motor parts supplier? Thanks Share this post Link to post Share on other sites
welshpug 1,657 Posted July 31, 2007 you can get it from any electrical place, like maplins, I bought a big tube of the stuff for £3 Share this post Link to post Share on other sites
skinner2k3 3 Posted July 31, 2007 (edited) Just found some in the electronics department at work. Will get some of that on there tonight. Edited July 31, 2007 by skinner2k3 Share this post Link to post Share on other sites
skinner2k3 3 Posted August 2, 2007 Didnt work. If anything it seemed worse! I will have to try another amp on there. I think I may be able to borrow one and try that. Is there any other common causes for a miss at constant revs? Its particularly bad at 3k rpm a deffinate pop can be heard from the exhaust. Cheers Share this post Link to post Share on other sites
