Hesitation, Stumbling, Code 4 - Tip (ACU0313AP)

WARNING: This page is about the Vigor GS, Automatic, which is a different variant/trim than selected.

Publication date: 1998-11-01
Reference number: ACU0313AP

HESITATION, STUMBLING, CODE 4 - TIP

TECHNICAL INFORMATION TIP

Reference Number(s): ACU0313AP, Date of Issue: November 1998

HESITATION, STUMBLING, CODE 4 - TIP

YEAR(S): 1992-93

MANUFACTURER: Acura

MODEL(S): Vigor

DATE OF ISSUE: November 1998

ISSUE & TIP

Some 1992-93 Acura Vigor models may exhibit hesitation and stumbling symptoms, along with setting a PGM-FI Code 4. Don't be tricked into condemning the Crank Sensor, PCM, and/or the wiring harness.

To properly diagnose these symptoms:

Disconnect the four-pin green connector from the back of the alternator.
Reset the PCM, then test drive the vehicle.
If the symptoms go away reconnect the alternator.
If the problem returns, repair or replace the defective alternator. Voltage spikes from a defective alternator can interfere with the Crank Sensor signal.

Courtesy of Import Service Magazine

with thanks to:

Kevin Loza

Master Tech Auto Care

Bellflower, California

REFERENCE NUMBER

ACU0313AP

NOTE: This information has been obtained from sources generally believed to be reliable. Use your own judgment before relying on this data. Neither the suppliers of these Technical Information Tips, nor lemon-25 Repair Information Company, LLC, guarantees or assumes responsibility for data accuracy or completeness, nor is liability assumed by the suppliers of these Technical Information Tips or lemon-25 Repair Information Company, LLC, for any claims or damages resulting from the use of this information.