Do anybody know what this problem is?
if I am riding on the highway between 70-85
the car what to start overheating I cut the
heat on it goes back down, but when I take
back way's home under 65mph its fine I am in
traffic and everything it doesn't overheat, only
at high speed it start to want to overheat
(and I check to see if it had a blown
headgasket it doesn't I look for a milkey white at the
tip of the oil dip stick)
DO ANYBODY KNOW WHAT THIS IS?

 

It could be that your thermostat isn't fully opening. Also, what is the coolant level in your overflow bottle?

 

in between min and max.

 

This is looking like a thermostat. Does your temperature vary when the car is driven in low speed traffic once it is warm?

 

thats what crazy when I am in traffic is stay on the cool side the only time it start to over heat is when I am on the highway doing 70-85.

 

The load is higher as is the engine speed at 75-80. If the thermostat isn't fully opening, the cooling capacity would be reduced, especially at higher RPM.

 

^^^ so that mean it the thermostat then
THANKS FOR EVERYBODY HELP.

 

my car is doing the same thing, i changed the t-stat and still doing the same thing i think its my headgasket

 

It is not a 100% guarantee that it is the thermostat. It could be a clogged cooling passage or bad water pump among other things. The thermostat is a good place to start.

Here is a follow-up question. Does it still get as hot at 75-80 MPH if the heater is on hot with the blower going?

 

m3 boostin at the tip of your oil dip stick is it a white like milkey at the tip
of it.

 

Dogginator if I cutt the heater on it goes back down to normal temp.

what I am going to do is
1) Replace the Raditor Cap
2) Flush the Raditor put new coolent in it
3) Replace thermostat

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kennyboi &raquo;</TD></TR><TR><TD CLASS="quote">Dogginator if I cutt the heater on it goes back down to normal temp.</TD></TR></TABLE>

That also supports a bad thermostat. The heater core is not plumbed through the thermostat, so its use provides additional cooling.

Your plan of attack seems sound.

 

mines does it after 60 mph, when i turn on the heat it cools it down a little bit but im in south florida so i can be driving around with the heat on when it allready 85+...i think my headgasket isnt blown but has a leak i see a small about of oil grudge that builds up over time between the block and head.

 

and i was doing some research about it being the water pump and a guy was saying he has been working on honda's for 15 years and never seen a water pump go on a honda that hasnt leaked first..

 

my water pump is not that old but ill have it check 2

 

I also forgot to add that the over flow was full
when I pulled over.

 

usually its the thermostat when your cars temp goes up and down, try that or the coolant temp sensor..