Hiya people, I seek to have a delay with both my tacho and speedo, anyone have an idea on what could be the cause, here's a few scenarios, say i blip the throttle instead of a crisp rise and fall of the needle it will pause momentarily before coming back down, if I'm trawling along at a steady rate and I pick up the throttle the engine clearly picks up revs as expected however the tacho needle will hang fire for a little while before deciding its going to catch, an example would be 6th gear at 5000rpm to achieve 70mph, i can then roll on the throttle to approx 80mph and the revs will maintain 5000rpm sometimes for a good 5 seconds or so, same goes for speedometer, id describe it as latency if that makes any sense.
Its rather frustrating as i know it should be almost instantaneous, revs and speedo will also occasionally hold a lower or higher speed than road speed/engine revs due to this issue which is a little sketchy, I just dont like it and haven't a clue where to even start looking for a fix, however I'm off work tomorrow so a few pointers would truly be appreciated to get me started I've also a feeling its displaying a higher idle than the engine is actually spinning, again any help would be greatly appreciated,
Thanks!
Adie