Engine Controls - Hard Start At High Altitude/Cold Temps: Overview

Classification:
EC98-025a

Reference:
NTB98-088a

Date:
September 15, 1999

1996-99 PATHFINDER HARD START AT HIGH ALTITUDE AND COLD CONDITIONS

APPLIED VEHICLE:
1996-99 Pathfinder

APPLIED VIN:
Vehicles built before JN8AR05Y*XW306090

APPLIED DATE:
Vehicles built before SEPTEMBER 4, 1998

This amended version of NTB98-088 updates information in the Applied Vehicle, Applied VIN, Applied Date and Parts information sections. Please refer to this bulletin (NTB98-088a) for complete information. NOTE: This bulletin supersedes NTB97-034a.

SERVICE INFORMATION

If a 1996-99 Pathfinder is difficult to start at high elevation (over 5,000 ft.) and/or low ambient temperatures after a 4-6 hour cold soak, use this bulletin to diagnose and repair the incident.

The cause may be insufficient air volume through the AAC valve while cranking. New parts (AAC valve assembly and ECM) are available for this incident.

The vehicle may be towed in with a complaint of no start or driven in with a complaint, but no symptoms evident at the time. The incident may be duplicated at the dealership if temperature and altitude match the above referenced conditions.

Hard starting may also occur if base idle speed or ignition timing is out of specification.





PARTS INFORMATION

IMPORTANT:
If either the AAC valve or the ECM need replacement in the future, you must use the parts information from this bulletin.

CLAIMS INFORMATION





Submit a Primary Failed Part (PP) line using the claims coding as shown.