my proton wira 1.5 A problem is when the engine is running for about 30 minutes or about some distances,I switch off my engine to go off for about 5 to 10 minutes and I cant restart my car engine and I have to let it rest for about 30 minutes then only I can start again my car,when I send my car for check-up at workshop using computer scanning they cant find any problem ,so dont know where to solve this problem and its happen many times already.so far when I cant start I just have to stay cool down for about 30 min then temporary my problem solved.