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  #37  
Old 02-04-2013, 06:18 PM
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Re: Hydraulic Radiator Fan 4.7L Questions Please

here's some good reading

Why do I like the 4.7L engine?
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  #38  
Old 02-04-2013, 07:15 PM
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Originally Posted by Blue Marvel View Post
I'm toying with the idea of fixing it. As I said I would need the timing chain cover as it is corroded out and probably does not cool well because of it. At that point I cannot see not replacing the timing chain and gear with the miles on this engine. Then rebuilding the heads. Do you guys think I could get through this for a grand?

Rebuild heads and head gaskets.
Replace timing Cover.
Replace timing chain and gear.

It would be nice if I could get someone else to do it for that price?

Is the intake on these 4.7's plastic or metal?

My concern would be if I did all that with 183,000 miles on the engine and the fact that it ran hot is how long would the engine last me after all that?
About 60-70% of. Cost is heads. Call around and ask

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  #39  
Old 02-04-2013, 07:31 PM
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Originally Posted by kennzz05 View Post
he said it overheats AFTER he shuts it off not while running how would that be head related? 20 lb cap? is that standard? water at 20 psi boils at 258 thats damn hot cant believe you havent changed the tstat maybe try a slightly cooler one there cheap enough and wont you be kicking yourself in the arse if it fixes it (rad replacement)


before you jump ship find a guy on here named flyin ryan and send him a message he is the man on these engines dont let some internet bullhockey make you throw in the towel. jeep is chrysler did you not know that? even when it was owned by amc it still was a rambler aka amc engine or gm engines also i believe

pretty sure you could google honda accords and come back with hours worth of reading from people complaining



note when i wrote this i didnt realise there was a third page to the post
Be lucky you don't own a 2.0l Turbo or newer 2.5l Turbo from Subaru. They are spinning bearings like its the.end.of the.world, every manufacturer has niches

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  #40  
Old 02-04-2013, 09:48 PM
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Re: Hydraulic Radiator Fan 4.7L Questions Please

Quote:
Originally Posted by Blue Marvel View Post
I forget where I found it. I was talking to mechanic friend and he said he Googled the engine itself to find the real scoop on these. It's not a Jeep engine it's a Chrysler engine found in several of their models.

He said stay away from this engine. The Jeep is going to a wayward home for Jeeps now. I am not going to spend any more time on this thing. If you Goggle Chrysler 4.7 engine problems you will find some stuff. It seems I have found no end to the folks that have had overheating with this engine after it gets a little wear on it and becomes less efficient. Also it seems the coolant system is just barely enough to keep the vehicle cool, sized exactly to meet demand of the engine but no extra. If there any problems it over heats.

I say run like hell. I liked my Jeep. I really liked the body style of this year model. I like how it handled, how it felt, how it had plenty of room but not too big. It just didn't like me. Live and learn.

That is just stupid... dont get me wrong, if your done with it I would never try to sway you otherwise, but all of that is malarky dreamed up by people who havent taken care of their vehicle and are now trying to do what you have done here and explain away why it is doing what it is doing without just taking the hint that its the head gasket, its not an inefficient cooling system, its a cooling system that has not been taken care of and electrolosis has had its way with the motor. I have no issues with mine with 200k miles on the clock (yes i did replace the head gaskets when I got it... not the motor!), as stated by others there are tens of thousands of people who would agree that they have no cooling system issues and many of which tow with their rigs and have no issues. The cooling system is more than adequate. Also, Jeep is a chrysler product.
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  #41  
Old 02-07-2013, 02:14 PM
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Buy a new radiator a metal blade water pump and for piss sakes put some water wetter in and purge system and be happy.
I knocked Chrysler every chance i had until i got one. Now love it, the sports car is getting neglected due to me enjoying the4.7

http://chicago.craigslist.org/nwc/pts/3562502133.html
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  #42  
Old 03-17-2013, 09:08 PM
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Re: Hydraulic Radiator Fan 4.7L Questions Please

Guys I believe there is no doubt the 4.7 engine is a travesty. If you wanted to buy a new engine it costs more than many of these vehicles are worth. The Jeep dealer recommends not to rebuild them as they end up as trashcandium. I have talked to several mechanics, the book says it's an 11 hour job to replace a head gasket though the way this one is I believe it's more than a head gasket. I tried to sell the Jeep locally but everyone that has called about it after talking to a mechanic backs out based on the mechanic telling them to run.

The thing that really blows is the number of used 4.7's out there for sale that say need engine work far outnumbers the ones that are still running. All one has to turn to is Google, the number of "needs engine" for sale adds for 4.7 Durango's, Grand Cherokee's and Dakotas is absolutely astounding. Call me stupid all you want but the 4.7 engine is good for 150,000 miles and anyone with one past that is living on borrowed time.
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Old 03-18-2013, 01:17 AM
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I'm at 200k and she runs like a top. The fact that your suggesting using google to deturmine if "the majority"of them have failed is a joke... The "majority"of them are alive and kicking, many failures out there, yes, but many of the many failures are owner induced with poor maintainence or driving on known issues too long and they compound... Then it gets towed in and the owner is pissed its going to cost so much, when if they just fixed the radiator 2 months ago when it started leaking they wouldn't need head gaskets.

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  #44  
Old 03-18-2013, 09:29 AM
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I rebuilt my engine after #8 cylinder head gasket failed. Loved rebuilding it and will do it again if need be, love the jeep, and if i ever.loose.it.to a wreck ill buy another for cheap cause of these "super techs" saying stay away......

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  #45  
Old 03-22-2013, 09:43 PM
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Re: Hydraulic Radiator Fan 4.7L Questions Please

The Jeep sold. I was glad to have it off my property. I like everything but the engine that came with it. One of the big problems with these is you cannot substitute another engine. I suppose you can look at it as the pinnacle of planned obsolescence. Anyway I will never own another Chrysler product after that experience. For me from now on my vehicles will have to be 350 ready as they are the easiest to work on, the most readily available, and priced the most attractively for a V8. I knew this before I got the Jeep but I had no idea what I was getting into, the most expensive stock V8 on the planet. It's a darn shame there aren't more of the 5.9 engines out there as those are bullet proof.

Anyway I bid you all fair-well.
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  #46  
Old 03-22-2013, 09:47 PM
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Re: Hydraulic Radiator Fan 4.7L Questions Please

Quote:
Originally Posted by hoffmanestates View Post
, every manufacturer has niches

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Looking back at this I agree. Chrysler is not all bad and Jeeps are not all bad just the 4.7 was a major dud but for now on it's 350's for me.
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Old 03-23-2013, 09:20 PM
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