im worried my BII is running hotter than it should


Lukas

10+ Year Member

Joined
Aug 14, 2011
Messages
9
Points
1,501
Age
31
City
Hickory NC
Vehicle Year
1990
Transmission
Manual
I recently bought a used 90' bronco II, i have heard about the older models before 89' where the heads cracked from over heating...i know mine is a 90' but im still worried my engine still runs hotter than it should. and what also raised my attention, was that the previous owner had stop-leak in the radiator. even if the "over heating/headcracking" isnt the problem. i still want be precautious and help lower my engine temp. and make cooling more easier for my vehicle. i have considered buying a new radiator, thermostat and engine oil cooler, but im not sure on what is the best or what is needed or not..what do you think i should do?
 
If in dout, replace the radiator and back flush your cooling system and start fresh with a new t-stat.As for a oil cooler Iam from Arizona were our summers are brutal and we use them.
 
Well what is the difference between a regular flush and a reverse? Or is that a stupid question haha..I live in NC and we have pretty brutal summers as well as extreme winters, I'm not sure If an oil cooler is needed, but how difficult are they to install? And Im definately replacing my radiator
 
Not sure about your cooling system but I saw your from Hickory, NC and I just wanted to say welcome to TRS from another Hickory, NC member!!
 
aha well thanks! im pretty happy, i dont see too many broncos in the hickory area!, i dont want a car everyone has!
 
yea theres not many Bii's around here. My neighbor has a 1st gen Bii and it looks pretty good. Good to know theres other members in Hickory now!!
 
haha yeah, most of whats around here is explorers (when it comes to RBV's)
 
Back flush with a Prestone flush kit,install it as per the instrutions and good luck!
 
Thanks guys! I flushed it today more than a couple times and I got some pretty nasty stuff come out, now I am running lower than normal temp. Most of the time
 
Did you use the Prestone kit? I usually just drain and put distilled water in, let run. drain, again add distilled water...drain and then coolant.

Summers here are brutal. Do the Engine Oil cooling fans really work?
 
Nah I used peak or something like that, I put my water hose in the hole and turned it on and ran the engine with it for awhile, and then used the chemical treatment, filled with water and ran for 10 minutes , flushed then coolant
 
You must log in or register to reply here.

Sponsored Ad

TRS Events & Gatherings

Where We Were in 2025 – The Ranger Station

Latest posts

Featured Rangers

Want to see your truck here? Share your photos and details in the forum.

TRS Latest Video

Official TRS Merchandise

Follow TRS On Instagram

Latest Album Photos

IMG_4690.JPEG
IMG_4689.JPEG
IMG_4688.JPEG
IMG_4679.JPEG
IMG_4656.JPEG
IMG_4625.JPEG
IMG_4562.JPEG
IMG_4561.JPEG
IMG_4560.JPEG
IMG_4559.JPEG
IMG_4558.JPEG
IMG_4445.JPEG

Product Suggestions

Back
Top