Thanks guys for your help. My problem is resolved. I checked again the valve with hor water and I replaced the tps. No more surging idle but my idle was too high at 1600 rpm. As I said, I had a gap between the throttle plate and body even with the stop screw totally unscrewed. I mean you can see the...

Hello ! My idle was very high +2000 rpm on my ae86 gts map. I read many topics to find the good way. I had a vacuum leak, so I replaced the tvis and throttle gaskets and after checking with smoke, no more air leak here. I took the oportunity for cleaning the aav and testing it with hot water to conf...

Hi everyone, I forgot this post.
I bring here the conclusion for anyone with the same
Problem… A harness wire broke at a junction near the fusebox

Thanks for your help guys !

Hello everyone, I have an Alternator issue and I hope your knowledge can help me. I leave in Portugal (sorry in advance for my bad english) and I have an ae86 gts Kouki since a couple of years. Last year, I changed the engine for another 4AGE in perfect condition (I replaced the water pump and belts...