So this is something i've searched for and could not find anything like it. I have a 2005 4.0 automatic... the engine is a new Jasper remanufactured engine and the cooling system is almost all new except for the radiator which is the Mopar from what I can tell. The waterpump used was Mopar the thermostat is 195 and the radiator cap is the correct 18 lbs one. I ordered a new radiator cap as a quick and easy test to see if it resolved my issue.
Basically when i'm going up hill on steep grades for example the Grapevine in California on the 5 which is one of the steepest grades for 5 miles in Socal I believe the car begins getting hot... The needle usually stays right below the halfway marker but as I was climbing it went past it and made it to the center of the 0 in the 210 so about 230/5... I have 31 inch duratracs and i'm positive it's stock gearing when i'm climbing at say 50 mph my rpms are below 2k and i'm losing speed with my foot floored. Before I gave up on the climb I got into the furthest right lane and dropped into 2nd and the heat began to drop back to the middle and I climbed the rest of the way up slowly at about 40... Could it be because my gearing was not appropriate therefore making the engine work harder than need be? I also lose speed going down hill without my foot on the gas and my rpms drop to like 1k
When I finally got to my destination I checked under the hood and saw that the overflow reservoir had blown the cap and spilled coolant. I bought some more coolant filled it back up did a few hours of offroading and it did not heat back up...I have about 1k miles on the new engine.
I'm going to check the radiator for cold spots after work but thought that the gearing might be the problem. It's dog shit slow in 3rd i'll be accelerating on the freeway and when I get to 60s I let off to cruise and the rpms drop to 1.8k or 1.9k when I accelerate again it will shoot up to almost 3k and keep on going.
Basically when i'm going up hill on steep grades for example the Grapevine in California on the 5 which is one of the steepest grades for 5 miles in Socal I believe the car begins getting hot... The needle usually stays right below the halfway marker but as I was climbing it went past it and made it to the center of the 0 in the 210 so about 230/5... I have 31 inch duratracs and i'm positive it's stock gearing when i'm climbing at say 50 mph my rpms are below 2k and i'm losing speed with my foot floored. Before I gave up on the climb I got into the furthest right lane and dropped into 2nd and the heat began to drop back to the middle and I climbed the rest of the way up slowly at about 40... Could it be because my gearing was not appropriate therefore making the engine work harder than need be? I also lose speed going down hill without my foot on the gas and my rpms drop to like 1k
When I finally got to my destination I checked under the hood and saw that the overflow reservoir had blown the cap and spilled coolant. I bought some more coolant filled it back up did a few hours of offroading and it did not heat back up...I have about 1k miles on the new engine.
I'm going to check the radiator for cold spots after work but thought that the gearing might be the problem. It's dog shit slow in 3rd i'll be accelerating on the freeway and when I get to 60s I let off to cruise and the rpms drop to 1.8k or 1.9k when I accelerate again it will shoot up to almost 3k and keep on going.