1997 XJ sport 4.0 4 dr. Need help to get car running and out of this dessert. Need advice on what might be the problem.
On the way into Moab, the car overheated, I think due to running the AC and electrical fan starting to go. I let it cool, checked oil+coolant for contamination, added water and I was off again. I did a Moab excursion without a problem, and on the way out of town, it started acting up. Would hesitate off idle, and start racketing. The racketing I think is lifters as it's on/off depending on load and doesn't get louder, just faster with rpm.
I started to hear a really bad noise I thought was one of the pulleys but after completely removing the serpentine belt, it ended up being the electric fan. I turned around and made it to a shop and they changed the fuel pump. Apparently, they go when hot. The fuel pressure was checked before and after and went from 25psi to 52psi. I stayed in a motel and have since changed the plugs, wires, cap, rotor, coil, and crank sensor. The plugs were really bad, wires suspect. I checked the compression cold and all were 100-125psi. When warm #6 jumped from 115 to 135psi. It was too hot to verify the rest tho. I changed the oil & filter and there wasn't any coolant or other contaminants obvious. The oil pressure is low when the engine is struggling but appears to be normal once revving.
It hesitates a lot off idle, and I need to feather the clutch hard. Once moving it appears to have reasonable (maybe even normal) power.
I'm contemplating waiting until it's cooler and start driving it out of town since most of the issues are heat related.
On the way into Moab, the car overheated, I think due to running the AC and electrical fan starting to go. I let it cool, checked oil+coolant for contamination, added water and I was off again. I did a Moab excursion without a problem, and on the way out of town, it started acting up. Would hesitate off idle, and start racketing. The racketing I think is lifters as it's on/off depending on load and doesn't get louder, just faster with rpm.
I started to hear a really bad noise I thought was one of the pulleys but after completely removing the serpentine belt, it ended up being the electric fan. I turned around and made it to a shop and they changed the fuel pump. Apparently, they go when hot. The fuel pressure was checked before and after and went from 25psi to 52psi. I stayed in a motel and have since changed the plugs, wires, cap, rotor, coil, and crank sensor. The plugs were really bad, wires suspect. I checked the compression cold and all were 100-125psi. When warm #6 jumped from 115 to 135psi. It was too hot to verify the rest tho. I changed the oil & filter and there wasn't any coolant or other contaminants obvious. The oil pressure is low when the engine is struggling but appears to be normal once revving.
It hesitates a lot off idle, and I need to feather the clutch hard. Once moving it appears to have reasonable (maybe even normal) power.
I'm contemplating waiting until it's cooler and start driving it out of town since most of the issues are heat related.