Engine Overheating and Fuel System(I Think)
It's a '98 Cherokee, 4.0L, nothing fancy about it.
I've got 2 problems.
1. Overheating. I recently had to remove the AC compressor/pulley and replaced it with a bypass pulley, as well as a new serpentine belt. Drove with no overheating issues for about 3 days. One morning it overheats out of nowhere, I park immediately, pop the hood, and steam and a little smoke is rolling from the engine. I noticed some coolant around the radiator cap, which makes me believe the cap is working properly. The Radiator is new, so I dont think it is the problem either. There is no loss of coolant, no leaking anywhere that I can see, aside from the bit that came out of the cap when it overheated..I'm really not sure what I should be looking for or into next. Possibly the water pump? I don't know a thing about Jeeps, so i'm not sure if this is a common problem.
2. I had a problem with the fuel pump not running. I replaced the relay for it, and it still wouldnt work, so I put in a new fuel pump, and it ran right away with no problem. . This was about 2 months ago, Now I've noticed the Jeep shuddering alot when i'm just idling, and it even died once while at a stop light. I've noticed that when i'm having problems, I can tap on the PDC and the problem will not be as bad, and even goes away sometimes, temporarily. There is also a light film of clear grease on the relay tips when I pull them out, is that supposed to be there?
I'm at a complete loss here. I really dont want to get rid of this jeep, but I'm getting tired of putting money into it. I could really use some help. Thanks.