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Brian Gaarder
Dodge Dakota
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1/27/2002
10:36:25

Subject: Thermostat
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The thermostat in my 99 5.2 is bad and needs to be replaced. I was told that I should buy a 185 degree one. I was told that a 160 degree woudl be better.... what should I buy ?



CW
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1/27/2002
10:53:23

RE: Thermostat
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160 is too cold for N/A application. Go for the 180-185 it works well.

2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Electric fan Convertion, Awaiting HO cams.
Working on adjustable fuel pressure with return.

Knobbyman
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1/27/2002
11:09:58

RE: Thermostat
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CW .. what would u use a 160 for?
Towing, Lowspeed hi rmp, HOT weather?

'01 Graphite QC 4x4
4.7 3.55 LSD
http://www.knobbyman.com
----Speed only breaks stuff faster----

bernd
*GenIII*
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1/27/2002
11:23:39

RE: Thermostat
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I run a 160 in my '97 V6...but it's also supercharged with nitrous. Honestly, it's too cold for the winter (no codes though) but perfect for the summer. The truck runs consistently at 165 degrees.

1997 Dodge Dakota SLT - V6
Supercharged/Intercooled @ 10# w/Nitrous
14.55 @ 96.01mph

CW
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1/27/2002
11:24:35

RE: Thermostat
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Bernd uses it in his truck for supercharged and NOS duty. The 160 from what I have seen will cost you HP. The engine doen't run as efficently. According to Bernd the magnums like 180-190 temp to run at heir best. I won't even use a 180 in my 2001...atleast not right now. It is -22°F Think I should move to Arizona. Burrrr.

2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Electric fan Convertion, Awaiting HO cams.
Working on adjustable fuel pressure with return.

Wayne
Dodge Dakota
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1/27/2002
12:53:17

RE: Thermostat
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Tried the 160 in my '99 5.2 a couple of years ago. Can't tell you if it helped of hurt performance. It was winter and the cab took over 20 minutes to get any heat in it. Went back to the 180. Have never had any codes come up with either one.



conig
Dodge Dakota
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1/27/2002
17:23:46

RE: Thermostat
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CW how did you do a electric fan conversion? was there a noticable gain.



CW
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1/27/2002
19:14:57

RE: Thermostat
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For now I just hooked up a thermostatic switch to the stock elecric fan. Works very well in the winter. In the summer well...lets just say we will see. I am not sure if it will keep up. The only thing about the performance I can tell you is that there is some more throttle responce. It is -12°F right now and there is 8 inches of snow. In other words NO traction. Wish I could tell you more. It is a small improvement but a improvement.

2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Electric fan Convertion, Awaiting HO cams.
Working on adjustable fuel pressure with return.

Brian Gaarder
Dodge Dakota
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1/27/2002
22:16:33

RE: Thermostat
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well... i installed the new thermostat and i am still reaching past 210 during the day and just at 210 at night..... what could be my cooling problem ?



CW
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1/27/2002
22:44:00

RE: Thermostat
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You probably need a fan clutch. It isn't pulling any air at idle. Does it cool down when you are moving.

2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Electric fan Convertion, Awaiting HO cams.
Working on adjustable fuel pressure with return.

Wayne
Dodge Dakota
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1/28/2002
07:08:32

RE: Thermostat
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Bad guage?



Todd Bouton
Dodge Dakota
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1/28/2002
08:33:03

RE: Thermostat
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T-stat in backwards?

pointy end out.



Brian Gaarder
Dodge Dakota
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1/28/2002
09:42:57

RE: Thermostat
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Yes the thermostat is in right.... the engine gets hotter while driving....... while at idle i can feel air being pulled from the front of the truck ....... so i am guessing that the clutch is fine.......



Brian Gaarder
Dodge Dakota
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1/28/2002
17:05:56

RE: Thermostat
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here is another question ..... how much pressure should be in the cooling system ? when the truck was at normal temps the upper radiator hose is very solid... when I squeeze it barely moves....



Art
Dodge Dakota
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1/28/2002
17:10:42

RE: Thermostat
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Bleed the cooling system, maybe you have air in it



Brian Gaarder
Dodge Dakota
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1/28/2002
22:17:48

RE: Thermostat
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CAN ANYONE HELP ????



mj
Dodge Dakota
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1/28/2002
23:26:53

RE: Thermostat
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O.k. Start from scratch. You replaced T-stat & its in right? Are you loosing fluid? Two things you can do for process of elimination. First, with engine warm or close to hot with Rad. cap removed and engine at idle, put a thermometer (type used for cooking big birds) at radiator filler neck . Observe thermometer and instrument temp. guage that they are within 10%. Second, have your coolant system pressure tested (ENGINE COLD). This will show any internal leaks(hd. gkt./in.man.gkt.) and or external leaks (hoses/htr. core/radiator/freez plugs/hd.gkt./waterpump piss hole) Also, don't forget to test the cap, or better yet. Just replace it. Caps are cheap. By now you should have found the prob.



mj
Dodge Dakota
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1/28/2002
23:30:50

RE: Thermostat
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The pressure of your coolant sys. is indicated on the stock radiator cap. 16lbs?



BADASS
Dodge Dakota
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2/23/2002
22:47:05

RE: Thermostat
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Alright fellas nice trucks.... two questions first and formost who the hell would supercharge ...AND bottle (NOS) a V6 spent the cash mine as well get a motor that will give you your moneys worth (4.7,5.9)anyway i see some of you have found a 180 t-stat for a 4.7 WHERE?????? i sure as hell cant find one i heard robert shaw has one but cant find the site or #, ive got a 2001 4.7 offroad dakota with airforce cold air intake , stage 2 jet moduale , bouch platnums stainless headers back exaust by gibbson 3.90 gears pozzy, 5-speed pushing 320 ponies and 458lbs of torqe looking to supercharge next, 3" lift 4 weel drive is extra weight but.... how kickass offroaden.....180 t-stat please



KenDawg
Dodge Dakota
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2/24/2002
01:15:56

RE: Thermostat
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Who ever is having the cooling problem check your radiator to see if it needs to be rodded.



D
Dodge Dakota
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2/24/2002
03:24:13

RE: Thermostat
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BADASS:

Robert Shaw 180 Tstat available at
speedtweaks.net, or get the part # form
speedtweaks.net and visit your local auot
parts store. The problem is that the auto parts
stores have not updated their computers yet
for newer vehicles, so they are no help, but I
got my Robert Shaw t-stat from autozone
(California) for $5.99. The guy who
supercharged and NOS his v6 (Bernd) runs
speedtweaks.net, and is probably the most
knowledgable guy on this site, and is
develping the turbo setup for the 4.7's. Hold
off on that supercharger idea...I think the
turbos are gonna be mean!

D
01/4.7/CC/DJMdrop3-6/mods



jonathan
Dodge Dakota
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2/24/2002
08:23:39

RE: Thermostat
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also... some people never think about it, but rather than just going out and buying a new thermostat, take the old one out, and while the old lady is away. Get a pot and fill about halfway with water and commence boiling.... eventually you should hear/see a pop when it opens up. Only 5 bucks for a stat, but... why bother if you dont need it.

jonathan

By the way, I just installed the 160 thermostat yesterday, and I'm running the beast at the track today.... I'll let you all know how it does... if worse comes to worse.. I may end up putting a 180 in it.



BeKay
Dodge Dakota
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3/27/2002
12:16:21

RE: Thermostat
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Anyone know where i can get a good 180 Degree T-stat?




kawzx7
Dodge Dakota
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3/27/2002
13:40:05

RE: Thermostat
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Autozone had my Shaw stat in stock, try them.

Later
Chris



mopar2ya
Dodge Dakota
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7/31/2002
20:59:46

RE: Thermostat
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I had a GTO that overheated because of a malfuncting clutch fan. I put a new T-stat in it and had the radiator rodded-out, nothing worked. Finally I took it to a mechanic and it was fixed.
The fan barely rotated to let the car warm-up, but it stayed that way when i took it out for a drive. Needless to say, the vehicle overheated.

Hope this helps,

Mopar2ya




Lello
Dodge Dakota
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7/31/2002
23:31:54

RE: Thermostat
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Hate to be the one to give you the bad news.......when the hose is super hard to squeeze and it's not the rad cap which would be the cheap fix.........it's possible a cooling pressure problem i.e., bad head gasket ( the cylinder pressure is pressurizing the cooling system. Get a pressure test done to check it.



FredDQC
Dodge Dakota
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8/01/2002
10:58:52

RE: Thermostat
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Well we get a lot of those problem around here because temps are always on the 100Fs and for what you are saying, it sounds like a fan clutch problem. To test it, what I do is to run the truck until it reaches the temp you say it does. Then I wait for the old lady to be out and grab an old shirt or towel. something to wrap around your hand and arm for protection."I know it sounds crazy but it always works for me". Then try to stop the fan with you hand puting pressure on the blabe like a brake pad. If you can stop it with ease, then your clutch is bad. If is good, then is going to take you some time to stop it. Just my two cents!!



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