i have a ej1 with an ls/vtec b18b with b17 head ported and polish. after driving for 30min or so and i stop my temp goes up as i move on it goes down and up again if i speed up to about 50mph it goes up if slow down to 30mph it down for a while and it goes up again. I put a new thermostat and i bleed the coolant but nothin i have no leaks.what do you think it could be? any help is welcomed thanks

 

ect(engine coolant temp sensor) could be problem. right below the vtec selonoid, could be going bad, check it out. is vtec working?

check your cels(check engine light). see what kind of codes you get, theres a thread on here how to read your cels.

make sure you dont have any leaks, i had the same problem, i had a leak under my intake manifold.

check if your radiator fan is even working, maybe your swap might have messed it up. make sure your wire wire harness is wired correctly or just get the 92-95 EX harness.

 

bump

 

bump

 

It sounds like your fan is not kicking in.

When your car begins to go over normal temp, pop your hood and check to see if the fan is running. If it is not, that is your problem.

First check your fuse. Then check to see that the fan works by putting a direct power line to the pos. If it turns on, you either have a bad wire somewhere or bad sensor. Check to see that everything is connected correctly. Keep us posted.

 

I recently put my fan directly to power so its on at all time but it still heats up.

 

damned that sounds wierd. It may be a bad thermostat. Try running it without one to see what it does.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civic_in_LA &raquo;</TD></TR><TR><TD CLASS="quote">damned that sounds wierd. It may be a bad thermostat. Try running it without one to see what it does.</TD></TR></TABLE>


Please do not run a car with a fan constantly on and no thermostat.