hey i just bought a 1994 cx
it has about 104,900 miles on it
it runs great, the temp is a little below half way all the time
however i noticed when i come to a complete stop and i hear the engine first starting to idle it revs up then down then revs up again for about 6 seconds.... like an odd lump...
being i have no tach i dont know the range of RPMs
but can anyone diagnose this problem?

 

try reseting the ECU...might also be a leaky hose or gasket...? check them out...good luck