I have toyota corolla 94 auto transmission with 148000 km drives well exept when i drive car on freeway and car temprature goes down gear automatically change and rpm goes high. I change oil but situation still same. When temprature needle bit up gear shiting correctly
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1994 Toyota Corolla Question: Toyota corolla 94 overdrive problem when car temprature low
Answer #1ziptie12 May 24, 2013, 19:12Master
If the engine is not warming up to operating temp. and staying there , then possibly the thermostat is not functioning properly.
ReplyBindaas, June 02, 2013, 19:11Rookie
You are champ car is fine now. you were right all mechanic advice me to change transmission but it was only thermostat. Thanks