I have a 97 Wrangler, 4cyl with auto trans, no A/C, 130,000 miles on the clock.
About a week ago the Jeep started to suffer from a lack of power: it will run and idle fine, but when moving up to freeway speeds (>50mph) it feels like it is struggling. There is no obvious misfire or hesitation in the engine - it just feels weaker than normal . Actually it's a little like when the A/C is turned on a vehicle with a small capacity engine.
Any ideas where to start looking? I noticed that the radiator fan is always running (even at cold idle). I'm not sure if that should be the case or if this is somehow related to the lack of power.
Thanks in advance for any help Keith