Go Back   DodgeForum.com > Dodge Trucks > Dodge Dakota > 2nd Gen Dakota
Sign in using an external account
Register Forgot Password?


2nd Gen Dakota 1997 - 2004 Dakota's

00 Dakota 4.7 runs hot

Reply
 
 
 
 
Thread Tools Search this Thread
  #1  
Old 07-19-2005, 03:34 AM
Plum00 Plum00 is offline
 
Join Date: Jul 2005
Posts: 14
Default 00 Dakota 4.7 runs hot

Have a great 00 4.7 Dakota with 107K.

Normally runs at 210 on gauge, plus or minus. Recently started to run about 1/2 way between 210 and red zone at highway speeds and AC on in hot weather. If I turn off the air and run the heater (no fun!) it cools down pretty quick to just above 210.

When I remove the pressure cap with a cool engine, the coolant is full in the upper hose.

There are no coolant leaks.

I've heard the electric fan go on at just over 210, so I think that's OK.

The engine-driven fan seems to pull a lot of hot air from the radiator and the fan 'whooshes' as it always has when I first hit the road with a cool engine. Otherwise I'm not sure how to check this further.

I changed the thermostat and it made no difference. The old thermostat had quite a bit of white deposit on the inlet side. Looks like mineral lime, like in an old teapot.

I'm thinking the radiator is fouled with this stuff. When I changed the thermostat, I tried draining the radiator with the drain fitting; pulled the little hose down and turned the flat out 1/4 turn but absolutely nothing drained out. I had to get the coolant out by removing the thermostat housing. The coolant didn't look bad at all.

The radiator looks a little skimpy in terms of frontal area and only has two rows of tubes. It looks like there's space for three rows.

Anyone have any experience with your Dakota running hot?

How hard is it to replace the radiator?

Can I get a better radiator than stock?
This ad is not displayed to registered and logged-in members.
Register your free account today and become a member on Dodge Forums!
Reply With Quote
  #2  
Old 07-28-2005, 03:52 PM
dreamer45543 dreamer45543 is offline
 
Join Date: Apr 2005
Location:
Posts: 7
Default RE: 00 Dakota 4.7 runs hot

been away from here for awhile...but I have been having issues with mine running a bit hot during the hotter days of the summer. I also have a 2000 4.7. I havent really paid much attention to it since once on the highway and away from stoplights and traffic it always seems to cool back down. The best I can figure is that the radiator is filling up with sludge, I just dont have the time to deal with it right now. I have been thinking about adding a better electric fan on the radiator...that might help
Reply With Quote
  #3  
Old 07-31-2005, 07:25 PM
Plum00 Plum00 is offline
 
Join Date: Jul 2005
Posts: 14
Default RE: 00 Dakota 4.7 runs hot

Thanks for the reply. Hard to believe only one reply to this in the midst of a hot summer.

I spent yesterday afternoon putting a new radiator. I bought one from Dodge cause it was cheaper that auto parts stores!

Tried to get a thicker radiator. The original only has one row of tubes! For a truck! The Dodge parts man looked a long time and found a 'super-cool kit' with a different radiator and a different fan clutch. But there was only one in the nation at a Dodge dealer in MO, but that dealer did not have it in inventory after all. The parts man said there is an alternative radiator that supposedly has a larger trans cooler inside but he wasn't sure if that radiator would fit, it was a special order, and so they wouldn't take it back if it didn't fit. Pretty disappointing all in all to have a V-8 truck with a Kia (killed in action?) radiator. So I ended up witht the stock radiator.

The old radiator had more of the white deposit inside (like the old thermostat) but it didn't look major. Those tubes are very thin though and it wouldn't take much to restrict them. Again, if the radiator would have been thicker, there's room for two rows of tubes, this minor loss of flow wouldn't have even been noticed.

Oh, and the radiator drain was not plugged as I thought. It feels like it detents at 1/4 turn but that is not enough to let it drain out. You've got to turn it out farther, but it's hard to access.

I'd suggest all of us Dakota owners change coolant every two years and mix the coolant with distilled or dionized water instead of tap water. Also watch out for bugs, leaves, grit and snow-bent fins on the AC condenser that's so close to the grille and bumper openings

My Dakota ran fine last night, but I'll let you know how it goes after more miles at highway speeds with the AC on.
Reply With Quote
  #4  
Old 08-10-2005, 01:55 AM
Plum00 Plum00 is offline
 
Join Date: Jul 2005
Posts: 14
Default RE: 00 Dakota 4.7 runs hot

I'm surprised by how few have similar hot running questions/replies during tehis hot summer.

Anyway, the new radiator(stock configuration, bought from Mopar) is a success. The hot running (but not overheating to the red) is resolved, the truck runs a definite way under the 210 mark on the gauge now, with AC on or off.

I'm happy the problem is solved but surprised it's solved as the original radiator does not look bad, inside or out!
Reply With Quote
  #5  
Old 07-15-2006, 07:42 PM
richwill richwill is offline
 
Join Date: Jul 2006
Posts: 4
Default RE: 00 Dakota 4.7 runs hot

I'm having the EXACT same problem you had.......
I've changed out the fan clutch, the temp sensor, and the temp gauge....I guess a new radiator is next
Reply With Quote
  #6  
Old 08-01-2006, 06:25 PM
richwill richwill is offline
 
Join Date: Jul 2006
Posts: 4
Default RE: 00 Dakota 4.7 runs hot

I have had the same exact problem as well. I've changed out the thermostat, the tem guage, the water pump, the fan clutch AND a brand new radiator a few days ago, and it's much worse than before. I'm clueless, and so are the mechanics that i've taken the truck to. Also, i'm not convinced that the coolant is circulating much, even after the new water pump, radiator, and thermostat. I'm about to give up!
Reply With Quote
  #7  
Old 08-06-2006, 10:55 PM
DakotaGSXR DakotaGSXR is offline
Registered User
 
Join Date: May 2004
Vehicle: 2007 Toyota 4Runner
Location: Seattle, WA
Posts: 4
Default RE: 00 Dakota 4.7 runs hot

I have this problem, but only AFTER I tried to flush my radiator fluid. Interesting that when I drain from the drain plug/petcock on the lower part of radiator, the coolant reservoir doesn't go down whatsoever....this is my post on another forum:

After about 50k miles, I decided to give it a go to flush my radiator fluid. Figured I would use a radiator flush (I bought a Prestone radiator flush). Anyhow, removed the petcock on the lower driver's side of the radiator, drained fluid, noticed that coolant in reservoir tank didn't go down much. Undid the bleed bolt and loosened radiator cap, topped off the reservoir with 50/50 mix. Went for a drive, turned on heater full blast. Temp gauge went to max after about 10 min., checked coolant level in reservoir tank, it was full. thought maybe I got air into the system, so undid bleed bolt and let some air out, but coolant level still full. visually checked all hoses to make sure no kinks, and didn't see any. Any thoughts or ideas? some radiator fluid seems to be coming out from the radiator cap, could this be bad part? Any hellp appreciated, I'm a noob at this stuff

Anyone have this problem? I'd hate to change the radiator...
Reply With Quote
  #8  
Old 08-11-2007, 02:37 PM
soulman016 soulman016 is offline
 
Join Date: Aug 2006
Location:
Posts: 18
Default RE: 00 Dakota 4.7 runs hot

Hey Fellas,

I just bought a 2000 Dakota 4.7L 4x4. I am having pretty much the exact same issues with the truck running hot, but never really overheating. This mostly occurs on relatively humid, 90º+ summer days. I have had the clutch fan and the thermostat replaced. I have had a mechanic I have known for a long time check out the coolant, radiatior and water pump to ensure no leaks, deposits, or clogs were there. The electric fan kicks in when it should. Everything else checked out and the coolant is clean, so I am a little puzzled. From what I have read on this post and other ones with a similar topic, it seems that a new radiator is the answer. Has anyone done anything differently to solve the problem?

Other than this heating issue, the truck is in great shape.
__________________
06 QC 4x4
5.7L
Brilliant Black Pearl
K&N 77 series CAI
Gibson Dual Extreme Exhaust
Superchips Flashpaq Tuner
Reply With Quote
  #9  
Old 04-25-2008, 05:11 AM
james_75 james_75 is offline
 
Join Date: Feb 2008
Location:
Posts: 9
Default RE: 00 Dakota 4.7 runs hot

I’ve also the same problem you had, I think I need to take my truck to an automotive shop to check if what is going wrong with my Dodge Dakota parts.
Reply With Quote
  #10  
Old 04-25-2008, 07:15 AM
varsis varsis is offline
Record Breaker
 
Join Date: Oct 2006
Posts: 2,320
Send a message via AIM to varsis
Default RE: 00 Dakota 4.7 runs hot

I think it's your mixture or a clog somewhere.... Flush your system for a good 2 hours... I did that once no problems since! Higher the mixter colder or hoter, tell me what your mix is like -47? -37.7?

__________________

5.9 magnum ---------------- Dana 60 Swap in Progress! ------ Shift Kit -------- straight piped exhaust, with no Cat ------- Clear Lights ----------------- Accel Super Stock Coil Wires ----- K & N Drop in Filter -------- Soon to be sitting on 38's with 5.38 gears!
Reply With Quote
  #11  
Old 04-25-2008, 11:38 AM
chris1974's Avatar
chris1974 chris1974 is offline
Veteran
 
Join Date: Apr 2007
Vehicle: 2003 Dakota Stampede 4.7
Location: Houston TX
Posts: 441
Default RE: 00 Dakota 4.7 runs hot

ALOT of problems can be avoidedbyflushing the cooling systemregularly. I'm not really sure what the recomendation is...but I flush mine before every summer. The camaro I had prior to the Dakota died from neglecting the cooling system. Freeze plugs started leaking, then the radiator clogged up on me. A tough lesson learned- I loved that Camaro! [sm=smiley19.gif]
__________________
Reply With Quote
  #12  
Old 04-25-2008, 02:47 PM
varsis varsis is offline
Record Breaker
 
Join Date: Oct 2006
Posts: 2,320
Send a message via AIM to varsis
Default RE: 00 Dakota 4.7 runs hot


Quote:
ORIGINAL: chris1974

ALOT of problems can be avoided*by*flushing the cooling system*regularly.* I'm not really sure what the recomendation is...but I flush mine before every summer.* The camaro I had prior to the Dakota died from neglecting the cooling system.* Freeze plugs started leaking, then the radiator clogged up on me.* A tough lesson learned- I loved that Camaro! [sm=smiley19.gif]
Turn your heater on, does it blow boiling hot heat? or just mild air. If it's hot you probably don't have a clog, as that is usually the first to do that... But if it's warm, do a BACKWARDS flush of the core and your whole system, I did my heater core, radiator. Just keep putting the hose onto the different locations there are about 4... you can do, use hose pressure to get it out. I kept getting more and more gunk, I would run the hose at a pressure of half on the open, and it would get some, turn up more get some more. You'd be surprised what is in there. Also, use some of that flush stuff. It helps to free it up than use hose pressure...
__________________

5.9 magnum ---------------- Dana 60 Swap in Progress! ------ Shift Kit -------- straight piped exhaust, with no Cat ------- Clear Lights ----------------- Accel Super Stock Coil Wires ----- K & N Drop in Filter -------- Soon to be sitting on 38's with 5.38 gears!
Reply With Quote
  #13  
Old 04-25-2008, 02:52 PM
scandal669 scandal669 is offline
Veteran
 
Join Date: Jan 2008
Location:
Posts: 331
Default RE: 00 Dakota 4.7 runs hot

Quote:
ORIGINAL: chris1974

ALOT of problems can be avoidedbyflushing the cooling systemregularly. I'm not really sure what the recomendation is...but I flush mine before every summer. The camaro I had prior to the Dakota died from neglecting the cooling system. Freeze plugs started leaking, then the radiator clogged up on me. A tough lesson learned- I loved that Camaro! [sm=smiley19.gif]
i agree with this...people neglect the cooling system until something goes wrong. i flush mine every year.
__________________
99 Dodge Dakota Sport 4x4 Extended cab
PB3 - Intense Blue, Pearl Coat
5.2L 318, 5 speed manual
31x10.5x15
LeBra soft tonneau (get one, it saves gas!)
http://i49.photobucket.com/albums/f295/scandal669/010.jpg
Reply With Quote
  #14  
Old 06-06-2008, 09:29 PM
kenter kenter is offline
 
Join Date: Sep 2007
Posts: 2
Default RE: 00 Dakota 4.7 runs hot

my 2003 dakota overheats with the ac on but is fine when its off,runs a the right temp,cant figure whats wrong ,i cleaned the rad up i did a flush it got a new water pump a few months ago has anyone gone through this problem and solved it .thanks
Reply With Quote
  #15  
Old 06-06-2008, 09:58 PM
JasonA JasonA is offline
Veteran
 
Join Date: Mar 2008
Location:
Posts: 347
Default RE: 00 Dakota 4.7 runs hot

I would replace the radiator if you suspect it's still original.

Single core aluminum radiators are pretty common. It should have plenty of capacity for the vehicle. My '97 has a new radiator about 2 months before I bought it. It also has a new water pump and a new thermostat by me. All it really needed was a new thermostat gasket, but I couldn't tell that before I took everything apart. Anyway, new water pump, new radiator, new 195*F thermostat, new coolant, all good to go. It's been (literally) over 100*F here the last few days, and even with the A/C on full and in traffic, the engine temperature never even makes it up to the "2" in 210. It's at the 11:00 position on the gauge. If I sit long enough (for minutes) in traffic, it might creep toward about 11:30 on the gauge, but then the engine fan kicks in when we get going (no electric fan) and cools it back down. I'm very pleased with how this truck has handled the incredibly hot and humid weather we've suddenly got in North Carolina.
__________________
1997 Dodge Dakota Sport Club Cab
5.2L V-8 / 44RE / Emerald Green Pearl
255/70R15 Firestone Firehawk Indy 500s
Flowmaster 40-series Dual Exhaust
Pioneer DEH-2900/Sirius Stratus Receiver
Reply With Quote
  #16  
Old 06-06-2008, 10:25 PM
kenter kenter is offline
 
Join Date: Sep 2007
Posts: 2
Default RE: 00 Dakota 4.7 runs hot

I thought about changing rad but it works fine with the ac off,so i thought it couldnt be the rad and then id still have the problem,might as will try it ,nothing in ac that might cause this that you no of thanks
Reply With Quote
  #17  
Old 06-06-2008, 11:01 PM
superdak05's Avatar
superdak05 superdak05 is offline
Champion
 
Join Date: Mar 2006
Vehicle: 2005 dodge dakota
Location: ct.
Posts: 4,376
Default RE: 00 Dakota 4.7 runs hot

one thing to check, when the trucks temp is normal check the bottom rad, hose if it is cool to the touch the rad, is clogged. if it is screaming hot then you are ok. also you may have a clog in the heater core assem. these always tend to build up with crud. i would do a back flush. the other thing if the trucks stock temp is a 195 then what is the temp doing at 210. my 05 4.7 is a 195 and i replaced it with a napa 530080 180 stat. truck really likes this one.
__________________
thats right i did it ,so what, cry two tears in a bucket, f@#$ it, lets take it to the stage

13.7 / 101.3 in the 1/4 mile
Reply With Quote
Old 06-06-2008, 11:01 PM
 
 
 
Reply




Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Join DodgeForum
Advertising

Featured Sponsors
Vendor Directory
Our Sponsors
All times are GMT -4. The time now is 07:03 PM.

Internet Brands, Inc.


Contact Details & Emails