NHTSA Office of Defects Investigation
Preliminary Evaluation PE87-048: HIGH SPEED STALLING
- Closed
NHTSA's Office of Defects Investigation opened Preliminary Evaluation PE87-048 on August 19, 1987 and closed it on March 10, 1988. NHTSA's investigations file lists the 1987 Jeep Cherokee for it.
Updated daily from NHTSA's investigations file
Key facts
- NHTSA number
- PE87-048 (also written PE87048)
- Investigation type
- Preliminary Evaluation The first stage of most defect investigations: NHTSA's Office of Defects Investigation gathers basic information about a possible safety defect, including from the manufacturer.
- Status
- Closed March 10, 1988
- Opened
- Closed
- Vehicle or equipment manufacturer
- Chrysler (FCA US, LLC)
- Component
- Vehicle Speed Control — Linkages
- Vehicles and equipment
- 1987 Jeep Cherokee
A recall appears here only when NHTSA's investigations file links one to the investigation; NHTSA's summary or record can name others.
NHTSA's summary
As NHTSA's Office of Defects Investigation wrote it for Preliminary Evaluation PE87-048.
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.#===
Vehicles and equipment listed for this investigation
NHTSA's investigations file lists these vehicles and equipment for Preliminary Evaluation PE87-048. A listed model year means only that an investigation names it; it says nothing about any particular vehicle. Model years with a try.vin recall page link to that page's NHTSA investigations section.
Jeep
Jeep Cherokee
What an NHTSA investigation is
NHTSA's Office of Defects Investigation (ODI) looks into possible safety defects in vehicles and equipment, often after owner complaints. An investigation usually starts as a Preliminary Evaluation, or as a Recall Query when it concerns whether an existing recall covers the right vehicles or fixes the problem, and ODI can upgrade it to a more detailed Engineering Analysis. A Defect Petition asks NHTSA to open an investigation, and Audit and Equipment Queries are administrative investigations into whether companies complied with federal vehicle safety requirements, such as reporting, recall and certification rules.
An open investigation is not a finding that a safety defect exists, and NHTSA can close one without a recall.
To see whether a specific vehicle has an open recall, enter its VIN at nhtsa.gov/recalls.
Jeep VIN check: decode a VIN to see its year, make and model.
Sources
NHTSA's investigation record for PE87-048
Investigation details come from NHTSA's investigations file, which try.vin imports once a day. The investigation types are described from the U.S. Department of Transportation Inspector General's May 2023 report on NHTSA's Office of Defects Investigation, NHTSA's petition rules (49 CFR Parts 552 and 557) and NHTSA's Office of Defects Investigation procedures. How try.vin reads NHTSA investigations.