Hey guys, my old man's having a bit of trouble with his stock '91 Corolla Seca. The engine i'm pretty sure is a 4A-C, it's a transverse twin cam carburetted engine. It's done roughly 270,000km's and it's auto. The small problems have only recently increased in severity, they are:
* Won't kick into gear at 80km/h unless you let go of the accelerator
* When i'm travelling at 75-80km/h and accelerate hard it "kicks back" a gear but struggles to get past 80km/h
* When the engine's just been started, it wont allow use of the overdrive function (despite driving over 80km/h)
* When the engine's just been started and transmission moved into Drive, it will roll about for 4-5 seconds (in any gravity-driven direction) before the gear engages and you start to idle-roll forward
* Gear changes arent very smooth (around 50-60km/h)
* Real lack of power
Just wondering if anyone's had the same problems before or know what the problem might be/where to get information about it. I'm assuming that it has something to do with a faulty oil pump. Does anyone know what symptoms are present with a faulty oil pump?
Any help would be appreciated... Cheers - Josh.