i have a d15 with aftermarket headers my car ony overheats in traffic and on the freeway...i think its my headers heating up the radiator causing da 50/50 to boilover but im not sure? anyone with the same problem or know a way to fix it? plz help im tired of driving around with my heater on full blast. its too hot for that lol...thanx in advance

 

i say check your thermostat or check for any water leaks...

 

wasted my money on a 80$ mugen thermostat from passwordjdm and jus redid all the hoses: all the hoses on da manifold, upper lower rad. hoses, heater hoses.
any other suggestions??

 

Radiator ???????? mine was overheating but it was a hose with a small rip and its ok now. it was a small hose by the manifold

 

make sure your fan(s) is working right. thats the same thing mine was doing and my fans wern't working so i just wired them into a switch...

 

what about heat wraps for the headers? how does that work?

 

I would also check to make sure your fan is kicking in like it should!

 

why did you hook it up to a switch ? i'm willing to bet 20 bucks that the coolant temp sending unit went out , there no more than 20 bucks at your local auto parts store ,oh and for the record it's under the distributor

 

Check your coolant temp sensor, your thermostat, your fan. Actually let the car run and watch to see if your fan turns on. If your upper radiator hose and lower radiatore hose are equally hot, the thermostat is working. If your fan isn't turning on it's your coolant temp sensor went bad assuming that there's no water leakage anywhere. Your headers will not get hot enough to cause the car to overheat.. if it does, then you have a serious problem other than overheating.

 

put a small jumper between the temp sensor and that will keep ur fan running all the time and might be able to figure out if its u fan or not ???might be ur headgasket? do u hve ur water reservoir in ur car beacause that will cause ur car to overheat

 

illl try da jumper between da coolant temp sensor ..but i do have da resivior in the stock position and if it was my headgasket wouldnt it overheat all the time?? not just on the freeway?

 

You need to put pressure to the coolant system And see if there are leaks. Ever check to see if the water pump is leaking? The weep hole is by the altenator upper bracket. A Little bit of coolant is normal but if its consistantly leaking or there's alot of built up dried coolant in and around the weep hole its leaking. Do all the suggested checks and reply back.

 

did the pressure check a while ago and i had like 8 diffrent leaks...changed da hoses and still over heats! im stuck! water pump came new with the car...but as for the jumper for the coolant temp sensor, is there a step by step on this?? or does anyone have da time to write it out for me?? im kinda slow with eletrical.. thanx

 

fans are working jus dnt wana use a switch?? any diys on that coolant temp sensor jumper that i heard about?? i searched....no luck