zebvance

I just picked up my 88 mj from the exhaust shop and got the exhaust all buttoned up, new header cat and muffler, on the way home it was a notch over normal on the high way. when I got in stop and go traffic the temp started climing slowly. I need to get this fixed asap.it almost got into the red. I have a brand new flowkooler water pump on it along with new hoses new overflow bottle, High flow thermostat, thermostat housing, and I has been flushed. The only thing that has not been replaced is the radiator and the fan clutch. When I rev the engine, the fan clutch seems as if it is catching...

Could this be a head gasket issue also? seems to be running normal, however I dropped it off at the muffler shop with a open header on it, they welded on the high flow cat and magnaflow muffler and I felt a good loss of power after that was welded on...


So know I need yalls opinions.
Also I need to find a radiator to buy at a good price that is a upgrade from the stock one row, and how much beet will it cool the engine.

And I need the same suggestion for a flan clutch. I would like to upgrade from stock if possible

the mj is a 1988 auto 4.0

zebvance

and it has 101,000 miles

Lowrange2

Your engine should stay just as cool now as it used to with all the stock stuff.

Mine uses ALL original stock items and stays nice and cool.

You can buy one of those fancy 3 rows but I feel like they're a waste of money.

I've heard you could use a fan clutch for an upgrade from a V8 ZJ. I could be wrong.

gilbertxj466

When's the last time you replaced the lower radiator hose?? Just replaced mine, and that fixed the problem. When driving at higher speeds the hose has a tendency to close up if it's old.

zebvance

All hoses are new

zebvance

Do you think there could be head gasket failure?

RTorrez1

Check your oil if you think it might be a head gasket. Just take off the oil fill cap and look inside. See if it looks milky like a milk shake. Also check your coolant. Are you losing any or does it look like it has oil in it?

zebvance

Just changed the oil, didn't look milky to me and checked the oil on the dip stick, it is very clean still.

RTorrez1

Personally I would stick with the stock rad. If you want to up grade your fan clutch you can install on from a GC V8. But I am not 100 percent for you 88.
On my 98XJ all of my cooling system is stock. I live in South Texas and the weather has been 100*-105* and she stays between 210*-214*all day long, Like I said the cooling system is all stock.

zebvance

so after thinking about it I decided to go ahead and put a new fan clutch and radiator.

know my question is should I get the stock 1 core or is a 3 core better. ALSO what about transmission lines?
I just ordered a flex a lite trans cool and B&M trans gauge to make sure I never over heat the trans. I new to know what to look out for and What I need when getting a new radiator that will work with the trans cooler too.

DESERTXJ206

Get a 3 core radiator, a Zj fan clutch. The aftermarket trans cooler should just bolt up infront of your radiator. My 3 core has inlets and outlets for the stock transmission lines.

I like to "upgradeto the best" when replacing parts In my cooling system.

CheapCherokee

an all metal 2 row like CSF will be just fine, 3 rows are not necessary. i converted my 88 MJ to the better open system, used a CSF 2 row rad for a 94 XJ, got the heater control valve for the 94 as well, added an over flow bottle and all is well. the Jeep runs fairly cool, on the high way gets to 210 only on steep grades. it will get hot while wheeling in 4 low up steep hills though.

zebvance

How much do they run and where is the best place to buy one?

zebvance

well I just bought the cfs 3 row radiator form jc Whitney, they had it at the cheapest price with a discount code shipped for 197.22 and I ordered the Napa 272310 fan clutch. for about 46.00. I also just sat out side with the truck Idling at 90 degree out side temps and It took about 25 mins before it got to the 3/4 mark. 1/4 past normal and 1/4 until overheating.... I really hope this fixes the issues. I checked the oil after I got done running it is it was till very clear and very light brown, I have about 30 miles on it since a oil change, and a few drips of liquid came out of the exhaust for about 10 tens after starting it and then it stopped, It had no smell at all.and it still runs normal. So Is this still any possibility of a head gasket failure or is that 100% rules out?

cherokee90

Look for bubbles coming threw your over flow bottle, this will tell you if you have a blown head gasket or air in the system. And I'm not sure the bigger clutch will fit with a 3 row rad.