augercreek Posted November 11, 2022 Share Posted November 11, 2022 In the radiator area there are four coolers, the big one for engine cooling, next the transmission oil cooler, then in front of that is a small one that does what? On the driver's side is the AC condenser. which has an electric fan on it. If the AC is not being used should this fan be running? It seems to be running all the time. Quote Link to comment Share on other sites More sharing options...
Mudfly Posted November 11, 2022 Share Posted November 11, 2022 1 hour ago, augercreek said: In the radiator area there are four coolers, the big one for engine cooling, next the transmission oil cooler, then in front of that is a small one that does what? On the driver's side is the AC condenser. which has an electric fan on it. If the AC is not being used should this fan be running? It seems to be running all the time. I don't know for sure, but I would guess power steering fluid cooler. Only other option would be an engine oil cooler. With respect to your other question, if its an AC condenser, then there would be no need for it to be running all the time especially when you don't have your AC on. Should be thermostatically controlled just like the other fans. 1 Quote Link to comment Share on other sites More sharing options...
yellowrosefarm Posted November 11, 2022 Share Posted November 11, 2022 The A/C related fan on my old Camry ran all the time when I first got it. I found a broken wire to a cooling sensor on the engine that was causing it. I'm guessing they fail safe to the fan running. 1 Quote Link to comment Share on other sites More sharing options...
Rawleigh99 Posted November 11, 2022 Share Posted November 11, 2022 I have a 2003 1500 with the 5.7 engine. It has the condenser cooler on the drivers side. the electric fan does NOT run all the time on mine. Mine has the transmission cooler o the top in front of the radiator and a smaller power steering cooler below that. The PS cooler lines run below the radiator back to the PS pump on the drivers side. You can see them below the fan in the bottom picture. I guess it is time I gave them a good cleaning! You can see the PS lines 1 Quote Link to comment Share on other sites More sharing options...
Wi Ih Posted November 11, 2022 Share Posted November 11, 2022 The fan will run if on defrost and also will run when certain check engine light codes are present. 1 Quote Link to comment Share on other sites More sharing options...
yellowrosefarm Posted November 12, 2022 Share Posted November 12, 2022 7 hours ago, Rawleigh99 said: I have a 2003 1500 with the 5.7 engine. It has the condenser cooler on the drivers side. the electric fan does NOT run all the time on mine. Mine has the transmission cooler o the top in front of the radiator and a smaller power steering cooler below that. The PS cooler lines run below the radiator back to the PS pump on the drivers side. You can see them below the fan in the bottom picture. I guess it is time I gave them a good cleaning! You can see the PS lines How is that motor for power? I might be looking at a 03 2500 with the same motor and a 5 speed manual trans. I've only ever had a 5.9 gas from Dodge. Quote Link to comment Share on other sites More sharing options...
augercreek Posted November 12, 2022 Author Share Posted November 12, 2022 It is a 5.9 gas engine. A lot more power than what I am used to with the GMC 4.3 I had! Got to be careful on the pedal!!!! It had a coolant leak that looked like it was the water pump, so I changed that out, put a new one on and there was still a leak! Yipes, it was the heater hose tube O ring. A new O ring didn't help a bit as the tube was so rusted and pitted that little skinny O ring couldn't seal it. New tubes are available, but I can't wait a week to get one as this is the only vehicle we have. So, I mixed up some epoxy and stuck it back on, hope that will hold. Now the transmission oil cooler is starting to leak so I ordered a new one with the tool to release the tubes from the hoses. What else can go wrong! Quote Link to comment Share on other sites More sharing options...
Rawleigh99 Posted November 12, 2022 Share Posted November 12, 2022 The 5.7 has plenty of power. It's been a good engine. It has the automatic transmission and four-wheel drive. I've got 248,000 on it. It burns a little oil, but other than that it runs pretty well. No major engine work to it, just the usual worn out peripherals. I will probably have to go through the front end again soon. I have replaced the ball joints and one of the front axle shafts. Unfortunately the boots on both axle shafts and going again so I'll need to replace both. These engines are known to get a lifter tick, called the "Hemi tick". Mine has it, but I haven't seen any problem from it yet. I get about 15 miles to the gallon light locally on relatively flat ground. The mileage drops pretty good when you put a trailer behind it though. Quote Link to comment Share on other sites More sharing options...
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