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Thats what I've read too. It seems like an electrical issue. I threw on the new pump from Extreme Terrain 2 days ago and had the same issue shortly after but have yet to have it again. I still have the original and was thinking of just taking the pigtail off that and attaching it to the new one.

That was my next step, or something similar… i do have a replacement from extreme terrain… might just throw that in there and say f it

Hey everyone, looking for some help diagnosing an issue on my 1998 Wrangler TJ (4.0L, automatic). I recently replaced my fuel pump with a brand-new Delphi FG1353 module. The pump has less than 100 miles on it, hasn’t even made it through a full tank yet, and I’m already running into problems. I...

I went with this one off Extreme Terrain! https://www.extremeterrain.com/jeep-wrangler-ignition-distributor-cap-rotor-apid106.html

TL;DR: 1998 Jeep Wrangler 4.0L automatic was stumbling. Tried spark plugs, wires, coil, distributor, CPS, O2 sensor, vacuum checks, throttle body, IAC, injectors, PCM—nothing worked. Final fix: replaced distributor and used the original Cam Position Sensor from the old distributor. Jeep runs...