I have a 96 civic with lsvtec swap. My problem is after the car warms up, it will over heat when i'm idling and goe down when i go, but then come back up again when i'm cruising (and thus slowing down) and in gear, and it is also very unpredictable some times and won't over heat and then do it. I have replaced the waterpump a couple months ago when it did this, and it stopped overheating until now, and is doing the same thing again, any suggestions?

 

good question. i have a 98 hx a swaped a b16a and made it a manny my car starts to do the same thing only when im a stop for a long time, i did change the thermostat.

 

did it help changing the thermostat?

 

i say thermostat, maybe the head gasket or head isn't bolted tight enough. radiator leak, hose leak, it could be anything.

 

Headgasket, thermostat, is the fan working properly?

 

thermostat most likely, or it could be your fan not turning on when ur idling..

 

the fan is hooked up so that it's on all the time, how to you tighten the head?

 

well...when doing a head job..your suppose to bolt it down....to torque specs and all of that. another thing is that like i said, a hose could be broken, or your thermostat isn't opening