JTSLP559

iTrader: (3)

i installed a 160 thermo from hypertech a couple of weeks ago. well i love it. when drivin down the road i only see about 175 degres , well the its done this to me a couple of time.. il be at a stop light. it will start gettin warmer. 210-215. and it will be at that when i reach where im stopping. when i go back out to leave hours later.. i see anitfreeze everywhere. i pop the hood.. its coming out of my over flow? why is it doing that?

also. is this fan switch any good?

http://store.summitracing.com/partde...5&autoview=sku

Slowmaro95Z28

If you installed the stat without tuning for the fans to come on earlier it's just not getting cooled down enough when you stop. Try getting a tune and I gurantee it will be solved.

VendettaV6

iTrader: (8)

Thats strange with the coolant overflow issue....

I had a 3.8 v6 car awhile ago and installed a drilled 160 thermostat on it, it was never tuned and never had any issues....

JTSLP559

iTrader: (3)

well my fans are not tuned. so i was going to get that fan switch i posted above? is it any good? anyone ever use it? it doesnt get warm driving . just when idle..

GreatWhiteZ28

iTrader: (15)

the overflow issue is cause cause the system built up too much presure so it's blowing it out the only way it can, I.E. too much coolant, or not primed properly

dhdenney

iTrader: (53)

Yeah it wouldn't be boiling over at 215*. Do you have enough glycol in it? Cuz straight water boils at 212* but I am sure you got coolant in there. But with stock water pump, the temp will climb some when stopped cuz the pump simply isn't turning very fast.

JTSLP559

iTrader: (3)

well every once in a while il get a lowcoolant light.. but after last night it poured alot out. my light didnt come on.. but i took my rad cap off and i didnt see any coolant so i put some water in. it took a full reg size water bottle full. when it gets low i add water. i dont have any coolant sittn around when it happens so all i have is water to add.

JTSLP559

iTrader: (3)

how do i properly PRIME it

Pntbll309

iTrader: (33)

I have the same issue, my low coolant sensor is also toast. So the overflow is due to the PCM not being tuned?

Slowmaro95Z28

If you're running mainly water and little cooland you drop the boiling point by a lot like stated above. Flush it out and start fresh with new coolant and see if the problem continues.

JTSLP559

iTrader: (3)

alright. nobody has any experience with that jet fan switch?

Slowmaro95Z28

I've used the switch. Barely worked for me and it was a pain in the ***. You're better off getting a tune and just having the fan temp set that way. Trust me, I've tried both ways. I'd sell you my old hypertech but it's for a 95.

JTSLP559

iTrader: (3)

shitty..

drjimmy

When you added coolant, did you open up the two bleeder screws?

FlamingChicken

iTrader: (2)

if you shut it off with it that hot its probably just heat soak. everything is already hot, you shut the car off and the already hot coolant is just sitting there on hot engine parts. temp goes way up and boils out. if you didnt get the air out of the system when you installed the tstat it will happen more often from air pockets. also wouldnt waste money on a switch. either make your own or get the fans tuned to come on lower

JTSLP559

iTrader: (3)

just the one bleeder screw closest to the radiator.

how do i know when all the air is out? i opend it up an it was shooting straight out of the little hole. so i let it do that for a couple seconds then closed it. how do i make my own switch?

Fbodynightmare

iTrader: (2)

how much<?

transam5.7lt1

iTrader: (18)

Thats weird, I had a 1994 LT1, it had a 180 degree thermostat with the fans reprogrammed for that same setting and it never went over 180, on the highway it would go and stay little bit under 180. You got to bleed both screws, theres one by the throttle body, passenger side, and the other is on the thermostat housing. Make sure both fans turn on with the a/c on, theres a setting that turns your fans off on the highway, that setting is determined by speed and temperature, in other words, if you have a bad/burnt fan motor, you will not notice it on the highway since the car gets enough air to cool engine as its running. When you're at a stop, driver side fan should be on, and when you turn the a/c, secondary fan should also turn on. If they don't turn on, you may have a faulty relay, or a bad/burnt motor. I had a secondary fan fail on me, and it caused a very similar situation to yours. When it overheats, does it do it having the a/c on? have you tried turning off the a/c to see if temperature drops?

JTSLP559

iTrader: (3)

my ac doesnt work. both my fans come on at 230. then shut off at 210.

transam5.7lt1

iTrader: (18)

Ok, but do the fans work at a high speed enough to cool engine down at idle? Maybe they work but don't pull enough air.