Perdana v6 engine hard to start after overheated.

[hex999]

Well I made a previous thread here regarding on a better cooling system
http://www.zerotohundred.com/newfor...g-system-for-engine-perdana-v6-manual-na.html

but today i had some other problems..
during engine start up it takes a bit longer to start sometimes and when it starts normally it should rev up to 1.5 or 2 if im not mistaken but now it doesnt, it does not rev but when the temperature is cold it slowly goes up to 1.5 so i believe nothing wrong with the thermal sensor.. but it just doesnt rev up.. i dont know whats the problem could it be the battery, spark plug, starter or something else.. any sifu here can give me some guidance? Trusted mechanics all still closed for CNY so got no hope for now.

 

[DanzEterna]

could be yr new thermosthat....

 

[hex999]

Thermostat could cause this problem bro?

 

[DanzEterna]

if its made in japan should be no problem...who is the manufacturer?

 

[hex999]

Now running with no themostat temporarily and the problem still got , could it be fuel pump or something bro

 

[DanzEterna]

when did u last changed yr water pump?

 

[hex999]

Water pump last changed was around last year april, and it seems to be working fine. The 2nd time it broke down when the hose cabut, mechanic never tighten it properly i guess or something wrong with the new themostat.

 

[^pomen_GTR^]

Now running with no themostat temporarily and the problem still got , could it be fuel pump or something bro

i think it is due to idler servo gear inside throttle body melted....because tb got small water circulation pipe (for cold climate keeping the servo from freezing) but here it acted as double edge sword..melting it instead of keeping it from stuck...

check with your mechanic on that part