Dont know too much about whats under the bonnet, but had nct last week on 96 corolla. Said they couldnt do the emissions test as i had a high idle speed, not me, the car. . Was up around 1250-1300 when it should have been 850 .
Drives grand, but just wont pass this test.Few other things like cv boot, but nothing that cant be fixed . This idle speed is the problem
Any ideas? One mechanic i brought it to said it could be a range of things and said it could cost a bit of money trying and testing different things, Said i,d get a second opinion.