im driving my 96 civic with B16 swap, everything is fine, then boom temp gauge is on the "H" no smoke or anything, im thing ok its the thermostat, changed it and I still have the same problem, ill be fine for sometimes hours the when i park and sit for a little while it shoots up to hot again.........what could it be. ive done everthing i can think of ..........thanks

 

sounds like the water pump or you have a clog or there is an obstruction in a hose.

 

Is the fan working? Are you sure it's the actual temp or could it just be the guage reading? Could be a bad sensor.

 

fan is working, no obstruction in hoses, if my temp sensor is bad will it throw a code?

 

I assume you already checked coolant levels?

Probably water pump.

 

why would my water pump be going out with only 30,000 miles?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mb96civic &raquo;</TD></TR><TR><TD CLASS="quote">fan is working, no obstruction in hoses, if my temp sensor is bad will it throw a code?</TD></TR></TABLE>I think he's talking about the sender for the gauge in the cluster. That's a different sensor - the ECU doesn't see that; it only throws a code if the ECT sensor is bad.

 

what if its not throwing a code?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mb96civic &raquo;</TD></TR><TR><TD CLASS="quote">what if its not throwing a code?</TD></TR></TABLE>That's what I meant. If the sender for the dashboard gauge is bad, the ECU has no way of knowing about it, so it won't throw a code. In that case, the engine isn't actually getting hot.

If the engine is actually overheating, look for other stuff in the cooling system. You already changed the T-stat, but it's not impossible for the new one to be bad. Then look for a plugged radiator, blocked hoses, air bubbles, ???

 

Hey; it also might be your head gasket. because i had the same problem with my gsr when i first got it.(swap)

 

did you check to see if you have enough coolant in the radiator

also it may just be an air pocket, how did you bleed the cooling system?

 

check your coolant level. Check the head gasket too... when the cars sitting and the temp shoots up, rev it up to see if your temp starts to go down. if so... then you have low fluid levels (leaks somewhere), or your coolant system is clogged somewhere.

 

just had tstat replace with honda parts, and coolant system was bled, still over heats after running for 30-45 minutes at idle, when i rev it up temp goes begins to go down, fluid level is full. Do I need to change my head gasket?

 

Just a thought .....
make sure you put in the thermostat, facing the right direction.....
bleed system of air ...

 

those things have already been done!

 

How good is your radiator? Buildup of crud inside? See if you can get a little mirror in the cap & look around. When it overheats, check your upper & lower radiator hose temperatures. If it's plugged, the lower hose gets cool, but there isn't enough flow rate to cool the engine.

 

take the rad. cap off let the car warm up.after it warms up give it a couple of full throttle jolts and if you shoot water out of the rad.like a volcano exploding,then you most likely have a head gasket blowed.do a compression test and that will also tell you.

 

I have a full length integra style radiator in my civic from C&R Racing, I will do comp check this week and let you know, thanks for your help.

 

comp check was 180 182 180 182. now what?

 

so something is pressurizing the radiator, the top hose get hot and hard as hell while the lower hose stays cold and soft.

Is there a difference in head gaskets between the B16A2 and the B18C1. My block is a B16a2 and my head is a B18C1?

Thanks for the help.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mb96civic &raquo;</TD></TR><TR><TD CLASS="quote">so something is pressurizing the radiator, the top hose get hot and hard as hell while the lower hose stays cold and soft.</TD></TR></TABLE>That sounds like a plugged radiator. If they both had pressure, then I'd tell you to check your thermostat first. But the lack of pressure at the outlet sounds like the water is having a hard time getting through the radiator.