1) I actually have various little problems with my H22A, One is the anoying RPM going up and down once the car warms up so i blocked of the Idle Air Control Valve to c if that would fix it and nope it wasn't that so im thinking it should be the temp sensor cause it only does it once the engine is warm.

2) My H22A tends to overheat a little every once in a while, im talking about little past the temp icon on the gauge so i checked the fan and it worked perfect even installed another fan and didn't do nothing, installed a new thermostat flushed the whole system put in some 50/50 collant with royal purple colland additive and nothing, took the thermostat out drilled 4 little holes on it and nothing, what else can I do.?

Ohhh forgot to mention its a fully built H22A with a T3/T4 turbonetics system running 16 pounds boost, front intercooler, small aluminum radiator.

Any help would be greatly appreciated...

 

hmm idk exactly what it is but ill give you my 2 cents

get a differnt fan switch
Passwordjdm i think might have them
horsepowerfreaks i know for sure has it anyways
it tell the fans to switch on at 80 degrees instead of 90 that might help i hope ur problem gets solved goodluck

 

-Do a leakdown test to insure that the headgasket isnt failing.....
-make sure you run an OEM honda thermostat for the h22
-make sure your radiator is not clogged , my turbo d16 had a clogged radiator and it would overheat ....
-test the cooling system to verify that its holding pressure,no pin holes in hoses,proper rediator cap,etc....

 

I already control the water temp through my hondata.

 

I'll order a oem thermostat to c if it helps.

 

mine was overheating and I had it in a eg hatach and replaced the thermostat, and found out my fan was not coming on too cool it down had to get a new fan as well as it needed a bigger raditor cause i was running the original raditor for a d15...

 

Im running a aluminum radiator its not full tho its only half cause of turbo fitment, beleave me I tried fitting in a bigger radiator but just wouldnt fit, ill be changing the thermostat this weekend for a oem one c if it does something.