Two problems related to gas recirculation valve (egr valve) have been reported for the 1997 Jeep Grand Cherokee. The most recently reported issues are listed below.
Driving at steady 35 mph engine started to stutter,lost power and stalled unexpectedly. Took a few times cranking to restart,finally started. This has occurred intermittently with no warning or dash indicator like check engine light coming on. Numerous repair attempts and thousands spent since,problem still occurs now average of twice weekly. Occurs at different speeds,temperatures and conditions. Have found online reference to many similar stalling problems for people around us. Dealer said there is no recall or bulletins that would help fix,very hard to diagnose. Finally found that if jiggle wire connector to engine e. C. U. Could make engine stall. E. C. U. Has been replaced but website electrical engineer said the wiring pulls down on the connectors eventually fracturing the solder holding connector pins against inner connections causes this. He proved by resoldering as needed but said the wire routing and 90 degree angle to the connectors will cause recurrence.
The contact owns a 1997 Jeep Grand Cherokee. The contact stated that the vehicle began stalling when the engine was hot. There were no prior warnings; however, when the engine reached 210 degrees it stalled. If the contact placed the vehicle in the park position and tried to start the vehicle it would turn back on. Several mechanics had performed diagnostic test and were unable to determine the cause of failure. The power steering and brakes also failed whenever the vehicle stalled. The failure mileage was 135000. The current mileage was 138836.