1st Gen Dakota Tech 1987 - 1996 Dodge Dakota Tech - The ultimate forum for technical help on the 1st Gen Dakota.

Thermostat swap! Need help. 1995 3.9

  #1  
Old 11-29-2008, 06:13 AM
Littlejon126's Avatar
Littlejon126
Littlejon126 is offline
Registered User
Thread Starter
Join Date: Oct 2008
Location: The Lou, and proud
Posts: 42
Likes: 0
Received 1 Like on 1 Post
Default Thermostat swap! Need help. 1995 3.9

I'm changing out a bad thermostat for a new one today. Can anyone walk me through this process? I'd like to get this done today with as few hassles as possible. Going to use 180 Degree to help keep the engine from knocking.

Help please!
 
  #2  
Old 11-29-2008, 11:46 AM
Crazy4x4RT's Avatar
Crazy4x4RT
Crazy4x4RT is offline
Hall Of Fame
Join Date: Aug 2007
Location: NM
Posts: 10,926
Received 16 Likes on 15 Posts
Default

Its realy simple. But the alt. can get in the way. So it is best to move it out of the way then it is even easyer to do it. Drain the radator so you dont have fuild go everwhere. The 180 deg may help with pinging. Spark plugs will help even more. They are cheep. $6 for all 6. autolight 3923. These are 1 step colder then stocks. They did help elemenate pinging for me. Also remember now that your going to 180 deg your coolennt gauge will be a lot lower. For me its at the first line of the gauge. And of coarse remember to change the gasket too.
 

Last edited by Crazy4x4RT; 11-29-2008 at 12:38 PM.
  #3  
Old 11-29-2008, 12:00 PM
HankL's Avatar
HankL
HankL is offline
Champion
Join Date: Aug 2005
Posts: 3,313
Likes: 0
Received 8 Likes on 8 Posts
Default

I did thermostat changes 4 times before I followed the official 1995 Ram FSM instructions and removed the 14 bolts from the accessory bracket so that you can do the thermostat change and gasket correctly ... and you can check/replace the bypass hose. It was surprisingly easy and fast compared to 'going down the hole'

put a 'cigarette paper thin' coating of Blue RTV on both sides of the gasket and let it set up & cure for at least 16 hours before firing the engine up

180 degree thermostats do not decrease pinging on 1995 Magnum 5.9 v8s
205 degree thermostats do not increase pinging either
 
  #4  
Old 11-29-2008, 01:16 PM
kahanabob's Avatar
kahanabob
kahanabob is offline
Captain
Join Date: Sep 2006
Posts: 582
Likes: 0
Received 0 Likes on 0 Posts
Default

Just don't put it in upside down. Pay attention to the one you remove.
 
  #5  
Old 11-29-2008, 07:54 PM
codydakota's Avatar
codydakota
codydakota is offline
Captain
Join Date: Mar 2006
Location:
Posts: 553
Likes: 0
Received 0 Likes on 0 Posts
Default

Just replaced one on my 3.9. Yeah, the 14 bolt method, way easier, or you can saw off the little nub that says "front" on it and move the alternator brace out the way. I sawed the nub off on my 5.2, miserable piece of, I mean, yeah, um it was a fun job...not. On my 3.9 I was able to do it with only moving the alternator bracket over. Be sure you can get straight at the bolts when tightening, other wise they will go in cocked and you'll need to retap the holes, use a little sealant and let it set before firing up.
 
  #6  
Old 11-30-2008, 03:08 PM
1shotjake's Avatar
1shotjake
1shotjake is offline
Professional
Join Date: May 2008
Location: Milwaukee, Wi!
Posts: 175
Likes: 0
Received 0 Likes on 0 Posts
Default

maybe i just have small hands, but I had no problem without moving much of anything but the cables and such that were in the way... granted it could be even easier and I don't even know it.
 
  #7  
Old 12-05-2008, 04:55 PM
dbilik's Avatar
dbilik
dbilik is offline
Record Breaker
Join Date: Feb 2008
Location: Chicago, IL
Posts: 1,058
Likes: 0
Received 7 Likes on 5 Posts
Default

I am going to tackle the water pump tommorrow and I got a new thermostat while I am at it. Where can I find instructions for this "15 bolt method"?
 

Last edited by dbilik; 12-05-2008 at 04:59 PM.
  #8  
Old 12-05-2008, 05:12 PM
Crazy4x4RT's Avatar
Crazy4x4RT
Crazy4x4RT is offline
Hall Of Fame
Join Date: Aug 2007
Location: NM
Posts: 10,926
Received 16 Likes on 15 Posts
Default

In the FAQ there is servace manuals listed. You can check there. For me I always had enough room with the alt out of the way. The way I see it is 2 bolts or 14. But For you dbilik you will need to get that deep into it.
 
  #9  
Old 12-05-2008, 06:02 PM
Littlejon126's Avatar
Littlejon126
Littlejon126 is offline
Registered User
Thread Starter
Join Date: Oct 2008
Location: The Lou, and proud
Posts: 42
Likes: 0
Received 1 Like on 1 Post
Default

DONE AND DONE! Thanks guys!
 


Thread Tools
Search this Thread
Quick Reply: Thermostat swap! Need help. 1995 3.9



All times are GMT -4. The time now is 11:44 PM.