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Dodge Dakota - FAQs

241 messages,  Last post on Dec 31, 2007 at 3:13 PM

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#201 of 241
Re: Low Temp Thermostat: 4.7L 2005 Dak QC [steak2k1] by bpeebles
Jun 21, 2006 (4:03 pm)
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Replying to: steak2k1 (Jun 21, 2006 2:03 pm)

You did not say - but I assume from your comments that you have AUTOMATIC xmission. Given that, do not use OD when towing, the xmission can overwork/overheat by constantly going in and out of OD.
 
You also did not mention which final gear ratio you have. This may affect towing performance.
 
Another key element you did not mention was if you have the factory-installed towing package or not. Some of the items included in the factory package are not readally apparent. (like the additon of power-steering cooler.)
 
If you are not ABSOLUTELY CERTAIN about your gear oils being synthetic... change them all to the approprate RedLine lubes. (Yes - RedLine is expensive... this is because it is 100% high-grade synthetic base stock...beyond even Mobil1!!)
 
Not only is RedLine perhaps the best lubricant available, I realized 2-4 MPG better just by changing from dyno-oil to RedLine. (xfer case, front/rear diff and Manual xmission) As a bonus, RedLine saved my rear diff when all the lube leaked out of a failed seal due to its ability to lubricate under those conditions.
 
The factory towing package is supposed to include synthetic lube in the rear diff. Folks that have added a hitch WITHOUT putting in synthetic have fried their rear diff. Some folks WITH the factory towing package have fried rear diff. because factory put in dyno-lube. It is better to put in RedLine to make CERTAIN.
 
As for the thermostat, the cooling system on the 4.7L semi-hemi V8 is a "bypass" type system. (thermostat is mounted low on engine and actually MIXES hot/cold to ensure engine is correct temp.) I would not mess with what is in there.
#202 of 241
Re: Low Temp Thermostat: 4.7L 2005 Dak QC [bpeebles] by steak2k1
Jun 22, 2006 (7:34 pm)
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Replying to: bpeebles (Jun 21, 2006 4:03 pm)

bpeebles: Decent post - great info.!
 
I do have automatic trans, had the rear diff changed with a synthetic 75W-90 (GL-5 rated),& with the Mopar additive and just did an oil change albeit with Mobile 1 synthetic oil. I have had the transmission serviced as well...all in the past 30 days. I think I am gonna leave that alone for now.
 
I do have a class III Reese receiver, Tranny cooler & all the electrics reqd for trailer. I do not believe that this unit has a power steering cooler..never heard about one of them.? Like to know what/why/how etc one requires that particular hardware. splain please..? (-%
 
Interesting on the Red-Line Lube. & On that note, I saw on the web site (thanks for the link) that it looks like good product. When I go to change fluids/gear oils, I will give it a try.
 
Understand re-TStat. I shall leave it alone..explanation clear and succinct. I believe that the Gear ratio is 3.55 for no other reason than I did not specify the higher ratio when the unit was bought.
 
I have no issue with spending coin on preventative maintenance/permium products...the alternative is just not worth the savings or the time wasted. ( I used to wear $ 35 dollar shoes..they wear out and are not comfortable. Now it's Clarks or Ecco's. Pricey they are but they last damned near forever and by God your feet feel comfortable.)
 
Many thanx,
 
Stk
#203 of 241
Re: Low Temp Thermostat: 4.7L 2005 Dak QC [steak2k1] by bpeebles
Jun 23, 2006 (4:21 pm)
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Replying to: steak2k1 (Jun 22, 2006 7:34 pm)

To answer your questions about the PowerSteering cooler....
 
It is simply a small radiator inline with the return hose that is connected to the plastic overflow tank. If you wish to add one, then the biggest problem will be locating a place to mount it. Since there is no pressure in the return line, a couple hoseclamps is all that is needed to plumb it in. Any small radiator like a xmission cooler would suffice... it just needs 2-3 passes of the pipe thru the core.
 
The one on the factory 4.7L is actually mounted just beside the PS pump. (on the engine). Perhaps you could look under the hood of some Daks with the factory towing package to see what it looks like.
 
I dont have a PS cooler and prefer to not have one. The steering used to get 'stiff' when outside temps are below -15F. I beleive adding a PS cooler may "overcool" the fluid in my situation.
 
Instead, I replaced my PS fluid with the RedLine PS fluid.... I never-again had 'stiff' steering in the winter. The RedLine base-stock can handle any heat that may get generated without breaking down so it is a good alternatave to having a PS cooler.
#204 of 241
Re: Low Temp Thermostat: 4.7L 2005 Dak QC [steak2k1] by mike133
Jun 23, 2006 (8:09 pm)
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Replying to: steak2k1 (Jun 22, 2006 7:34 pm)

I would like to know more about your tranny cooler. I was told by two different dodge dealers. Cooler is not available by dodge for the 2005 dakota. How is your cooler installed so as not to have to modify the cooler lines. Can the dealer deny warranty work if the lines are modified. i am planning on bypassing the factory in the radiator cooler, any thoughs on this. I will not be in any weather area's below zero. Thanks, mike
#205 of 241
Re: Low Temp Thermostat: 4.7L 2005 Dak QC [mike133] by steak2k1
Jun 25, 2006 (10:04 am)
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Replying to: mike133 (Jun 23, 2006 8:09 pm)

Well to tell you both the truth. I took a good look under the hood. Not only is there a Tranny cooler (OEM - and i got under the truck and looked at the lines - so it is in fact there.!), there is also a power steering fluid cooler located by following the lines from the PS pump which sits right on the left front top side of motor. They are both incorporated into the same front radiator body (there are two of them), with the PS fluid coolling taking the top 30 % of that rad and the remainder being trans cooler.
 
Other 05/06 Dak owners could confirm this..?
 
I would like also to hear from anyone that has installed a fan-on-demand as opposed to one that is always running which is what I have in mine. Now it may be that due to the the way the motor is cooled with the Tstat being one that has a small bypass valve, one should not put in a fan-on-demand type. However if you have... Does it work well,
 
What's the opinion out there.?
 
Thanx,
 
stk
#206 of 241
Re: Low Temp Thermostat: 4.7L 2005 Dak QC [steak2k1] by mike133
Jun 25, 2006 (10:32 am)
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Replying to: steak2k1 (Jun 25, 2006 10:04 am)

Pleas clarify. Do you just have the OEM tranny cooler that is located in the bottom of the radiator... or do you have a separate tranny cooler located in front of the radiator. with regard to the engine thermostat the factory is 195. I changed mine out to a 180 last year and have had no problems. My opinion,I do not believe the cost of an electric fan and removal of the existing fan blade is worth the increase in power benifits.
#207 of 241
Re: Low Temp Thermostat: 4.7L 2005 Dak QC [steak2k1] by bpeebles
Jun 25, 2006 (4:39 pm)
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Replying to: steak2k1 (Jun 25, 2006 10:04 am)

DONT REMOVE THE MECHANICAL FAN! It is thermostatically controlled. It basically "freewheels" most of the time...but if it senses the air coming thru the radiator over a specific temperture, it will "lock up" to the shaft and start to move a lot of air. You will know if this happens because the fan will start to noticably ROAR as the engine is revd.
 
My dak has an electric radiator fan also, it comes on when the AC is enguaged.
#208 of 241
Re: Low Temp Thermostat: 4.7L 2005 Dak QC [bpeebles] by steak2k1
Jun 25, 2006 (7:47 pm)
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Replying to: bpeebles (Jun 25, 2006 4:39 pm)

Well first of all. I do not in fact have a PS cooler..duh ..was looking at the AC pump and it has some lines going into the front thin small rad.!!
 
As for the Tranny cooler: You are right mike. I do not have a full blown cooler for the trans...hope I can get one installed in the next 3 days. Don't want to be sitting in Golden, BC with a blown tranny..!!! YIKes..!
I noticed that the AC cooler has two receptacles for a bolt on OEM Trans cooler. Will check it out in the AM for price and installation.
 
...and yup the fan is in fact an electro-static fan. Gonna leave that alone too. man oh man..the learnin just keeps coming.!
 
thanx big time - glad I had a second look and glad for the comments/your query.!!
 
stk
#209 of 241
Re: Low Temp Thermostat: 4.7L 2005 Dak QC [steak2k1] by mike133
Jun 25, 2006 (8:20 pm)
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Replying to: steak2k1 (Jun 25, 2006 7:47 pm)

Could you please write a follow-up after you have the bolt-on OEM trans cooler done. Also the part number would be nice. Presently I am planing on adding a hayden 1679 cooler and bypassing the factory-in-radiator one. Also adding a temp sensor ahead of the cooler with a gauge pod mounted on the steering column. I do not want to modify the original transmission lines. I believe the existing quick disconnects that are on the radiator can be removed and reused in a modified connection to the after market radiator. I have not checked this out yet. I was hoping your dealer install of a OEM bolt-on would shed some light since they keep tell me no aux trans cooler is available. Thanks for the responses. mike
#210 of 241
Re: Low Temp Thermostat: 4.7L 2005 Dak QC [mike133] by steak2k1
Jun 26, 2006 (3:59 am)
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Replying to: mike133 (Jun 25, 2006 8:20 pm)

Hey Mike..
 
I will write a follow up..but I am not so sure I am going with a dealer install. (not avail..?? - weird..it's part of the "tow pkg"). They tend to be a bit of a rip..Last time I was qutoed 425 for a trans cooler for a Montana (my previous Co. unit). Got it done for 225 cooler incl. at a private garage.
 
I did some looking around last night and think I will go with either a B & M or a Hayden like yourself. I,ve seen pricing in the 50-100 range CAD. What I want to know is which of the two lines is the return line to the Tranny.? I was thinking a bit about how to install the plumbing and think I will go in series. But put the cooler on the return line from the small cooler in the rad. That way the fluid should be coolest going back to the tranny. That might just work as a 2 stage cooler..?
 
BTW. I would like to know what PN & where you got that 180 Tstat..?? ( I thought about this too...if the motor is only good running at 195..how does it even drive when cold in the AM..Nah I am sure a 180 would work..!!)so yea
I would like to know what you put in.?
 
Temp sensor for trans cooler would be a good idea..I will look into doing that as well.
 
Well it's real early here (5:56 Am) and gotta go to Red Deer (Dead Rear), this AM. But will be hunting for a Trans cooler this aft.
 
talk to ya.
 
stk (Theo)

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