I am just starting a project and need some advice hope you can help,It concerns a civic 1.4 3door hatch 97 D14A4 man,it has fault on tickover wereas after a min or so the rev startto go up &down between 1000 &2000 constantly any ideas,
had something similar when i changed the blowen radiator on mine, turns out i had a big blockage in the cooling system. cos of that, the water pump done something and used more power causing it to rev more (so i was told) . once i flooded the cooling system completly again filled it up, left the cap off, engine running i got a big rush of coolant out the rad cap .
the revs went back to normal