NHTSA Office of Defects Investigation
Engineering Analysis EA88-025: STALLING
- Closed
NHTSA's Office of Defects Investigation opened Engineering Analysis EA88-025 on March 10, 1988 and closed it on October 3, 1989. NHTSA's investigations file lists 3 Jeep models for it.
Updated daily from NHTSA's investigations file
Key facts
- NHTSA number
- EA88-025 (also written EA88025)
- Investigation type
- Engineering Analysis A more detailed stage of a defect investigation, opened when NHTSA's Office of Defects Investigation decides an issue merits further review, often after a Preliminary Evaluation or a Recall Query; it can include vehicle testing, surveys and further information requests.
- Status
- Closed October 3, 1989
- Opened
- Closed
- 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 Engineering Analysis EA88-025.
ANALYSIS OF INFORMATION FROM MANUFACTURER:THE MULTI-POINT INJECTIONSYSTEM (MPI) USED ON THE SUBJECT VEHICLES HAS HAD WIRING HARNESS FAILUREAND FAILURE OF THE CRANK POSITION SENSOR (CPS).
BOTH FAILURES HAVE A HIGHFREQUENCY AND ARE THE SUBJECT OF JEEP TASK FORCES.NUMEROUS MODIFICATIONSTO BOTH ITEMS HAVE BEEN MADE.ANALYSIS:THE STALLING PROBLEM IS SEMI-INTERMITTENT, THAT IS WIRINGHARNESS FAILURE IS MOST LIKELY TO OCCUR UNDER THOSE CONDITIONS WHERE THEHARNESS IS DISTURBED (CORNERING AND ROUGH ROAD).
CPS FAILURE CAN OCCUR ANYTIME, BUT FAILURE APPEARS TO BE ACCENTUATED BY HIGH UNDERHOOD TEMPERATURES(EXHAUST MANIFOLD LEAKS, ETC.) AND DISTORTION OF THE CPS HOUSING FROMEXHAUST HEAT DAMAGE OR THERMAL FLEXING.BOTH CONDITIONS RESULT IN NOSIGNAL.STATUS:RECOMMEND OPENING EA AND SENDING A MORE REFINED IR.===
Vehicles and equipment listed for this investigation
NHTSA's investigations file lists these vehicles and equipment for Engineering Analysis EA88-025. 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
All Jeep recallsWhat 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 EA88-025
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.