My Oreilly’s went in at a Moab campground in 2020. It’s been to Moab every year since and it’s been over 100° at times. Also ran the Rubicon. May not last forever but it’s getting by.
Overheating problem
- Thread starter Dvaniwaarden11
- Start date
My Oreilly’s went in at a Moab campground in 2020. It’s been to Moab every year since and it’s been over 100° at times. Also ran the Rubicon. May not last forever but it’s getting by.
I have a 13 year old Spectra and its hot AF where it spends a lot of its time.
Dont be scared
I’m not saying some aftermarket’s won’t work. Hell maybe I just got two bad eggs in a row with aftermarket radiators, but after fighting with this problem for 6 months and spending WAY too much time reading thread after thread on overheating, I never want to see another aftermarket radiator in my life. Mopar is the only way to go and there’s a reason jeeps are still running them today.
I wanted to believe there was an alternative but like @mrblaine says, we’ll keep looking for a good mopar replacement but as of now there’s no replacement for an OEM mopar except an actual OEM mopar when it comes to our jeeps.
If only we could get the exact specifics to a mopar radiator and somehow 3-D print it or something to make ourselves ha.
I wanted to believe there was an alternative but like @mrblaine says, we’ll keep looking for a good mopar replacement but as of now there’s no replacement for an OEM mopar except an actual OEM mopar when it comes to our jeeps.
If only we could get the exact specifics to a mopar radiator and somehow 3-D print it or something to make ourselves ha.
That is not quite accurate. I know of at least 4 non-Mopar that will keep it quite cool in this part of the world.
Griffin
Wizard Cooling
Northern
CBR
Griffin and Wizard both fail at random times, Griffin will warranty theirs, Wizard won't if there any way they can get out of it. Northern was not designed for a TJ with AC. CBR has a long lead time, and an eye watering price.
What we don't know of is a reasonably priced plug and play radiator that doesn't need to be swapped out every few years.
I wish Northern would get their shit together and fix theirs so you don't have to pull the grill to install it.
Don't know if anyone has addressed this or not...lot of posts.
That said you MAY be able to find one at a Jeep Dealer. Jeep TJ 4.0 6 blade fan
Yes they work, I was able to find an OEM one and I was running a Supercharger at the time living in Scottsdale AZ , where 120s F don't even set a record.
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There is a bit more to it than that. That 6 blade fan was due to a TSB for some TJs in certain conditions. IIRC, it was overheating at idle in high ambient temps. But, the TSB included a PCM flash, a matching HD fan clutch and the fan blade.
The oddity to me was if this was the answer to the TJ cooling system having a problem, it would have been a supercede to all TJs produced after 2001. It is clear they solved that problem another way which did not require a 6 blade fan and heavy fan clutch so what did they do?
Things that are the same-
Radiator
Fan clutch
Thermostat
Thermostat housing
Water pump except for a minor impeller change
Hoses are the same
The only variable that is hanging out there is likely some programming change in the PCM and since that was also part of the TSB, it does give one pause to wonder.
In the last few years folks claim to have accomlished the same thing with the plastic fan from an Explorer. That "upgrade" also produced one of the best examples of irony I've encountered. A smart person did the swap and when I asked him why his answer was to get rid of the plastic impeller in the later water pump. Well, if plastic is so bad, then why would you want a plastic fan blade you silly person?
Thank you for adds.
When I did it the only thing I did was the fan blade and the fan clutch. I did not do anything else...no doubt I did have a cheat:
I got a hold of 2 hood vents that came off some car, forgot what it was, some being sold by the big 3 with a Supercharger or maybe a turbo, what ever it was an OEM a current production car.
In the pic you will see the 2 vets I placed over the rear edge of the radiator and extended back over the nose of the 4.0. This was post fan blade/fan clutch because at long idles in off-roading, it began to heat up will into the upper temps.
This solved my problem and did I have one. I was no able to even drive on to the freeway in Phoenix and Scottsdale with harsh pinging...even with higher octane.
I had this setup done and when Warn came out of the PowerPlant winch/air compressor, 4 wheel parts contacted me and asked if I could test the Powerplant winch for overheating. I agreed and spent a lot of time in Phoenix Rush hour traffic, at idle and AC on. Never had an issue and I maintained the normal operating temp. I forwarded the results to 4 wheel and they sent it to Warn.
Sadly I did not get the PowerPlant as a gift but I was able to get a great price on it, 50% off 4 wheel price...I still run that Powerplant today on my F 450 Truck and its still working.
My tj had a plow attached when I picked it up. Overheated on the way home. Replaced cooling system (rad, thermostat, pump and hoses) and it works fine now with the plow attached.
If you can get a Denso radiator for $100 or so, then I would replace everything and be done with it.
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