Hi everyone, first post and I need some help. I have just acquired an 1998 Audi A6 2.8 Quattro. Was alright on the test drive, as I took it real easy, not wanting to play with, at that point, someone elses property. Problem starts on the drive home, engine shows hesitation at low RPM. I have done a few hundred miles, and pinpointed the symptoms, will do my best to describe clearly. Here goes: Normally starts fine, sounds healthy and drive fine, until I go over ~3200 rpm, once this has been done, when the revs come below ~2300 rpm, any throttle gives major hesitation, its like no response from the throttle, until about 60% pedal travel, then it shunts back into power, but feels like misfiring, a bit like hitting a redline, it does overcome this, and gets smoother over 3000 rpm, but still lacks power, if i turn the ignition off then on again, it cures the problem, until I rev past 3200 again. I hope I make sense, other things to note, are the engine never reaches temperature, like the thermostat is stuck, not sure id it is the collant temp sensor or the thermostat is genuinely stuck open. Some people reckon coil packs, but this is just a common thing to say I think, has anybody had or heard of this problem, as it is quite specific, and can shed some light?
Thanks for any help, even if it is just helping me elimnate other possibilites.
ps Car has 186k miles, manual transmission, any more info just ask.