Two problems related to other fuel system pump have been reported for the 1998 Jeep Grand Cherokee. The most recently reported issues are listed below.
Issue with fuel pump.
1998 Jeep Grand Cherokee, 2wd, 4. 0 liter inline 6, automatic transmission. User has replaced many engine electrical and ignition parts, as well as fuel pump assembly, some relays, and the Jeep continues to stall in traffic, when turning corners, when backing up, has intermittent stalling when driving, and is posting various computer codes. I have already spent $700 on diagnostic and parts replacement, yet the problem persists. When driving the engine periodically cuts out and rpm's drop to zero. If this happens in heavy traffic or during an evasive maneuver someone could be killed. This is an ongoing and dangerous problem that my mechanic can not fix, and based on my research on the internet it is a widespread and perplexing design-related problem with this era Jeep cherokees and grands.