Help Help COOLING PROBLEM

[talon55]

I have a 93 Eagle talon tsi awd 7 bolt fully built 2.3 stoked 800 miles on it
i built it my self
now i have a cooling problem and i changed the temp switch sensor for the fans and temp guage sensor thermostate the fans dont turn on i have to turn them on manually does anyone can help me



And im hooking up my techometer and i need to know where the signal wire is behine the cluster from the harness does anyone got a schamtic or know whick one it is

 

[blackbyrd]

The fault is either in the thermo switch, the fan motor, the relay, or wirring harness.
The thermo-switch is located on the bottom tank of your radiator, it'll have two wires comming out of a sensor that screws into the tank.
Check the thermo switch by turning the ignition switch in ON, and removing the connector on the switch, bridge the terminals with a paperclip, it should turn on the fans.
if not..
Check the fan motor by jumping it to the battery, if that doesnt work, connect a jumper wire from terminals 2/4 on the radiator relay terminals, does it work?
Check the radiator fan relay, and connect a jumper wire from terminal 2 to the battery positive terminal, and connect terminal 4 to the negative battery terminal.
..
1 2
3 4
Use an ohmmeter, check for continuity between terminals 1 and 3, there should be continuity.
Remove the battery leads, check for continuity between 1 and 3, there shouldn't be.
Also, check for continuity between terminals 2 and 4, there should be continuity.
If the results are incorrect replace the relay, if they're good its your thermo switch.

To check the thermo-switch, unplug the connector, with the engine cold, use an ohmmeter and check for continuity across the terminals, there should be none. Let the engine get warm and check for continuity, there should be it.


http://www.vfaq.com/mods/ecu-harness-1G.html, pin # 109.

 

[talon55]

I changed the thermo switch still fans dont turn on.
Now if i turn the heat on and press the ac botton the both fans turn on..
So the relay is good right.
Do you think it my wiring....
Would anyone have a wiring diagram.?

 

[blackbyrd]

What Kind of Wirring Diagram?

Anyways, did you go through what i suggested?? It should help you route out the problem fairly easily.
Recheck your thermo-switch even though you just replaced it. Start from the beginning. If it's good, your fan motors are good since you can use your A/C switch, then the fault lies in your relay or wiring. Read above, to check it out.

Good luck!

 

[anubis]

talon55: what blackbyrd said is sound advice, but do you still overheat with your fans turned on manually? if so, you could have a bad thermostat or you may have some build-up in the cooling system that is obstructing flow.

i guess maybe i'm having trouble understanding your main concern... are you trying to figure out why your fans aren't turning on or are you trying to figure out why your car is overheating? either way, it would be nice to not have to manually operate your fans, so go back over everything like blackbyrd suggested - he's right on the money. it's also good to knw that even though you may have installed brand new sensors, brand new electrical parts don't always fuction properly. you can get a bad new part occasionally.

 

[talon55]

Thanks guys im cheaking it out all today.
Anubis ya i still overheat with my fans on maually...
Lets say The car is in normal temperature and the fans are on manually
I get on the car you can see the temp rising hi...
The car motor was just rebuilt i head the head redone and everything even the block was cleaned out.
I noticed that my radiator is real bad.. Its deteriating. So i ordered a
new one from slowboy racing a toyo brand.....

The car is 2.3 storked Eagle Rods w/ ARP rod bolts and head APR bolts

Wiseco 7-Bolt Stroker Pistons w/ Rings
Clevite main bearings
Clevite rod bearings
4G64 Crank

Wiseco 7 Bolt Stroker Piston Compression Ratio - 8.8:1

Eagle 7 Bolt Rod Length - 5.900"
poted polished head, 3 angle valve job, high temp seals
running on stock turbo, ecu, and injectors...

 

[talon55]

K guys i tested everything..
The fans turn on but they turn on when
the guage reads over normal temperature more over heating
and shut of to early.
And when you get on the car the temperature raises high...



Does anyone live in middletown ny 10940 thats knows this car in and out

 

[blackbyrd]

When do the fans turn on?
I'm sure with all those mods you have a logger, find out what temps exactly the fans turn on to figure out if the thermo switch is working properly.
As far as the overheating when you get on it, have you tried all the basics, thermostat, radiator cap, flush the system, make sure you dont have a bunch of leaves pilled up in front of the radiator, etc etc. Oh and you put in a new waterpump in right, when you rebuilt the engine?

 

[talon55]

Everything on that block is new yes.
The fans turn on where the half mark is on the guage in the middle of that and over heating.
and when you get on the car it just goes straight to overheating.
The only thing i know i didnt do it put the new radiator on it its comming this mon...
Whats you mean by a logger.?
blackbyrd i dunno whats wit this car im getting so anoyed.
Id like to take it to the track before the winter.

 

[blackbyrd]

A pocket/datalogger. It will hook into your ECU and allow you to thoroughly read your car and its sensors.
It consists of 3 things.
1, a PDA, Palm, laptop, or such.
2, A cable connecting to your ODB port, next to your fuse box.
You can find one here: http://cgi.ebay.com/Datalogger-91-9...tcZphotoQQssPageNameZWDVWQQrdZ1QQcmdZViewItem
3, The software which interprets your ECU. There's tons of options here, most are free.
The most popular is MMCD, http://mmcdlogger.sourceforge.net/
Full List can be found http://www.dsmtuners.com/forums/showthread.php?t=230375

Alternatively, you can buy a whole logger setup if you dont have the PDA, here :
http://www.dsmtuners.com/forums/showthread.php?t=230375&highlight=loggers


So you've replaced your thermostat, radiator cap, flushed your system thoroughly, checked for leaves?
Besides all of that, the only other things I could think of would be to check the ignition timing. A new radiator might help.
You may have a semi-blocked coolant passage though or a headgasket problem..
I would still go over and check everything out, even if its new, A lot of new and aftermarket parts fail, don't assume it's good because it's new!.

 

[talon55]

what does the sensor do the one on the thermostate housing near the cap and upper radiator hose

 

[blackbyrd]

The one with the white connector?
It controls your A/C fan, I believe. It is a temperature switch, on the A/C circuit.

 

[talon55]

sensor 1 and 2 i changed also

 

[blackbyrd]

Did you check the wiring, make sure it hasn't broken or came out of the harness/connector? Also, when it overheats does it start boiling out of your overflow bottle, smoking, anything, or is your only indication the gauge? And how high are you letting it get on that gauge before you shut her off? I hope your not/haven't run it too hott...

 

[talon55]

before coolant was comming out i opened the cap and water was comming out now iit dont do it and everyday i look after it gets cold it looks empty when you open the cap and over flow tank gets full
thats why i dont run her no more she runs to hot

 

[blackbyrd]

before coolant was comming out i opened the cap and water was comming out now iit dont do it and everyday i look after it gets cold it looks empty when you open the cap and over flow tank gets full

Okay. I didn't really get that.
Previously, coolant was comming out(of your overflow bottle?), and you opened the cap(to your overflow bottle?), and water was comming out of it..
Now, it doesn't come out of the overflow bottle.
After you let the engine cools down, it looks empty(what looks empty, the overflow bottle?) then when you open the cap(overflow cap?) the overflow tank fills up???
I really don't understand that last one. Are you saying after you let your engine cool, your overflow tank is empty,then you open the overflow cap and as soon as you do it fills up with water?
If you could better explain your last statements, it would help.

Try to decifer between radiator and overflow caps, and details!
Good Luck!

 

[talon55]

not the overflow bottle the radiator cap is nothing there when you let is cool down and the overflow bottle is full

 

[talon55]

k cheack it out
the car is cold i take the radiator cap off nothing is there
then I fill it and then turn the car on.
then it starts comming out when i got the cap off.
and the overflow tank is always full
but the last time i did that i seen the collant flowing not overflowing and comming out

 

[blackbyrd]

Okay, much better!

So your always out of coolant under your radiator cap, and you always have it back in your overflow bottle. Which means its being pushed out of your system and into your overflow bottle, and overflowing out probably as you drive... Right?
What's weird is it comes out of the rad cap after you turn the engine on, with the radiator cap off.. Did you burp the upper and lower hose when you filled it up with cooant? Have you tried running without the thermostat? Are your fans running when this happens? Is coolant flowing inside your thermostat housing/radiator hose? What temps were you at?
Hopefully you dont have backpressure in your coolant, which is mainly do to a head gasket, or a block in the coolant passage. Or was in my case.

 

[talon55]

i didnt try running my car without the thermostate but i put a oem from mistibishi....
Ya wana know somethin wered now
i tried starting it i filled it and now it didnt overflow i just seen it flowing fast not overflowing but when it cools down theres nothin there in the water neck is that normal but the car overheats anyway

 

[talon55]

what kind of thermostate should i have put there what you think????
i have oem now...
you think i should try running without a thermostate if so what is normal for the car to do when i take the thermostate out

 

[talon55]

Hey.
Ya I ran my car without a thermostate and it ran way cooler way cooler.