WTF is wrong w/ my cooling system???
 

my car has always run cool, takes 45minutes of idleing w/out a rad fan to over heat but that doesnt bother me so much unless there is an ill side effect i dont know about.
today my t-stat(brand new >1k miles) got stuck open so when i am driving my temp never reaches the bottom line on the gauge but i am not in cold start mode, my idle is fine ~800rpm which makes me think my engine is properly warmed up. i know the gauge works i've watched it climb when i purposely over heated it


what would cause a t-stat to stay open when its brand new and is running really cool going to hurt anything?

Re: WTF is wrong w/ my cooling system???
 

This is probably a dumb question, but is it an OEM t-stat or a Autozone one? Sometimes it takes 4 returns just to find a working Autozone t-stat.

Re: WTF is wrong w/ my cooling system???
 

well for one i wouldn't trust the gauge on the dash all too much. If you have easy access to an aftermaket one or a scan tool, you may want to play around with those and see what temps it's really achieving.

and yeah, try an oem thermostat

Re: WTF is wrong w/ my cooling system???
 

Major JDM fuckage?? ???

Re: WTF is wrong w/ my cooling system???
 

its from olympus (local auto place) but there stuff is usually pretty good, i'm going to acura today anyways so i might as well try one



when i let the car sit w/o the rad fan hooked up the temp goes up like it should, and when i am driving my heat is really weak because of the constant airflow accross the radiator, so that makes me believe that its at least working.


no JDM here, USDM LS FTW. i'm gonna pull it apart this morning and see if there is anythign visibly wrong with the t-stat.

is running cool gonna hurt anything?? i know when you run no t-stat you dont cool your engine effectively because the water/coolant doesnt have time to "soak" up the heat from the cylinders/head. you are just pumping cool water past the temp sensor so it re3ad cool.



on another note, my gas mileage is incredible, 230miles and still got a 1/2 tank left

Re: WTF is wrong w/ my cooling system???
 

You don't really have a 1/2 tank left ;)

Re: WTF is wrong w/ my cooling system???
 

Have you changed the T-stat gasket also?

Re: WTF is wrong w/ my cooling system???
 

Who needs a t-stat gasket...silicone ftw ;)

Re: WTF is wrong w/ my cooling system???
 

changed the t-stat, the t-stat shaft was coming out of the base when it opened and when it closed it sat crooked so the plunger wouldnt seal allowing coolant to continuously flow.




and jon, the pinging in 5th gear tells me i am running really lean :P

Re: WTF is wrong w/ my cooling system???
 

make sure the t-stat is installed correctly ie the jiggle valve should be up, running cold will efect the hp level of the motor, heat is actually need to make power not enough and you suffer

Re: WTF is wrong w/ my cooling system???
 

not really power, but moreso the efficiency of the motor. The fuel won't atomize properly when it's cold and plus the fact it's designed to run at 190 or whatever.

Re: WTF is wrong w/ my cooling system???
 

Not to mention the ecu sees the car as still in warm-up, so it dumps alot more fuel in until it does reach temp. That was how I ran extra fuel for my very first, very ghetto turbo build lol...potentiometer in place of the temp sensor and the fpr cranked up with a shitload of check valves. Ahh, the good old days. ;D

Re: WTF is wrong w/ my cooling system???
 

doesnt the ECU jack timing way high up in cold start mode??


and i was reading about running no t-stat on a daily basis and it can cause increased cyl wear due to uneven expansion from the coolent not performing properly

Re: WTF is wrong w/ my cooling system???
 

Yes it does. I had to retard the dizzy quite a bit to run 6 psi lol. In the end my ringland's broke anyway, so lesson was learned. ;D

Re: WTF is wrong w/ my cooling system???
 

peace out head gasket

Re: WTF is wrong w/ my cooling system???
 

Yeah I thought I was getting badass gas mileage also but it turns out I only am getting about 33-38 mpg. I haven't filled up yet on this motor so I haven't done the exact math.

Re: WTF is wrong w/ my cooling system???
 

haha that's a pretty good idea for some wicked ghetto engine management slo_crx1. :6