# NHTSA Preliminary Evaluation PE87048
> **HIGH SPEED STALLING** · Opened 1987-08-19 · Closed 1988-03-10
## Investigation
- **Action number:** PE87048
- **Type:** Preliminary Evaluation
- **Open date:** 1987-08-19
- **Close date:** 1988-03-10
- **Manufacturer:** Chrysler (FCA US, LLC)
- **Affected makes:** JEEP
- **Affected components:** VEHICLE SPEED CONTROL:LINKAGES
- **Affected model years:** 1987
- **Affected (make, year) variants:** 1
## Summary

SUMMARY OF INFORMATION FROM MANUFACTURER:THE FUEL INJECTED 6 CYLINDER(242 CID) IN-LINE ENGINE IS APPARENTLY NEW TO THE INSTALLATION INTO THEJEEP CHEROKEE.ANALYSIS:THE FUEL INJECTED ENGINE ALLEGEDLY STALLS WHILE THE VEHICLE ISCRUISING AT HIGHWAY SPEEDS (35-55MPH).TWO FAILURE MODES HAVE BEENIDENTIFIED, STALLING WHEN CORNERING OR GOING OVER A BUMP AND THE OTHERIS ENGINE STALL WHILE CRUISING--USUALLY IN HIGH AMBIENT TEMPERATURESITUATIONS.JEEP HAS IDENTIFIED A PROBLEM WITH THE EXHAUST MANIFOLDGASKET FIT TO THE CYLINDER HEAD WHICH AFFECTS THE HIGH TEMPERATUREPERFORMANCE OF THE CPS (CRANK POSITION SENSOR/ENGINE SPEED SENSOR)MODULE. CHRYSLER/JEEP HAS A TASK FORCE TO STUDY THE PROBLEM.STATUS:CRECOMMEND CLOSING THIS PE AND CONTINUING THE ANALYSIS IN AN EA.#===

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=PE87048)
---
*AI Analytics · CC0 1.0*