NHTSA Office of Defects Investigation

Preliminary Evaluation PE88-029: THROTTLE CONTROL

Closed

NHTSA's Office of Defects Investigation opened Preliminary Evaluation PE88-029 on February 23, 1988 and closed it on September 19, 1988. NHTSA's investigations file lists 3 Jeep models for it.

Updated daily from NHTSA's investigations file

Key facts

NHTSA number: PE88-029 (also written PE88029)
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 September 19, 1988
Opened: February 23, 1988
Closed: September 19, 1988
Vehicle or equipment manufacturer: Chrysler (FCA US, LLC)
Component: Vehicle Speed Control — Linkages
Vehicles and equipment: 3 Jeep models, including the Cherokee and Comanche

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 PE88-029.

SUMMARY:THE PE WAS OPENED TO INVESTIGATE WHETHER JEEP'S RECALL OF CERTAIN1987 MODEL VEHICLES EQUIPPED WITH THE 4.0 LITER FUEL INJECTED 6 CYLINDERENGINE (87V-035) HAD INVOLVED ALL THE POTENTIALLY AFFECTED VEHICLES.AREVIEW OF THE ODI FILES HAD INDICATED THAT 1987-1988 JEEP VEHICLESEQUIPPED WITH THE 4.O LITER ENGINE ALSO WERE EXPERIENCING SOME THROTTLECONTROL PROBLEM.A REVIEW OF THE WARRANTY CLAIMS AND THE AVAILABLEINCIDENT REPORTS DOES NOT INDICATE THAT A POTENTIAL DEFECT TREND EXISTSOR IS DEVELOPING.THE WARRANTY CLAIMS ATTENUATE, AND THE ALLEDGEDINCIDENTS APPEAR TO BE CAUSED BY A VARIETY OF FACTORS. #===

Vehicles and equipment listed for this investigation

NHTSA's investigations file lists these vehicles and equipment for Preliminary Evaluation PE88-029. 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
- 1987, 1988
Jeep Comanche
- 1987, 1988
Jeep Wagoneer
- 1987, 1988

All Jeep recalls

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 PE88-029

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.