hey guys my thermo valve is going out. reving to 3k then to 500 and so forth..its driving me nutts.. i plugged the lower hole in the t/b and it stopped.. so i went and got a new t/b gasket and im going to pull it apart..

ive searched.. can anyone walk me through the process of tearing this thing apart and how to fix it.. understood i have to remove the t/b and it sits just under it..so i know what im looking at..

ideas or info would be highly appreciated!!!

thanks

brian

 

It's the part that the coolant lines hook to when you pull the TB off. Take the 2 8 mm screws out of the cover part of it. Screw the nylon "donut" back in using 2 straight screwdrivers. Screw it in as tight as you can get it. Put it all back together and fill your coolant.

 

What year is the GSR engine? At one point (maybe '96?) they eliminated the FITV & included that function in the newer IACV.

 

jimblake is correct... would help on the year of the motor.... but if it does have the fast idle the follow what ryana said..

 

its a 95..in a 94 civic si but i know that doesnt matter..yea i cant stand having the throttle go up and down and up and down...its killing me

 

The '95 DOES have a fast-idle thermo valve. It's #13 in the picture, on the bottom of the throttlebody.

You can also check & clean the idle-air control valve on the manifold, #14.

Make sure you bleed ALL air out of your cooling system, either one of these valves can get confused when air comes thru their coolant hoses.