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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 24 (Engine Controls - Tests W/Codes - 2.5L) >> Self-Diagnostic Tests >> Test NTC-1A - No DTC Test Menu >> No DTC Quick Symptom Test

No DTC Quick Symptom Test

WARNING: This page is about a different car, the 1995 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.

Symptom checks cannot be used properly unless driveability problem characteristic actually happens while vehicle is being tested. To reduce diagnostic time, ensure TEST TC-1A is reviewed before attempting to diagnose a symptom.

Select symptom that most accurately describes vehicle's driveability problem, and then perform test pertaining to this symptom. Perform each test in sequence until problem is found. See NO DTC QUICK SYMPTOM TEST MENU table.

NO DTC QUICK SYMPTOM TEST MENU

Application Test
Hard Start NTC-2A , 3A -7A , 9A , 12A , 15A , 16A 
Start & Stall NTC-2A , 3A -6A , 9A , 12A , 16A 
Hesitation/Sag/Stumble (1) *
Surge NTC-2A , 3A -7A , 9A , 12A , 13A , 16A 
Lack Of Power/Sluggish NTC-2A , 3A -7A , 9A , 12A , 14A , 16A 
Spark Knock/Detonation NTC-2A , 3A -7A , 9A , 10A , 13A , 16A 
Cuts Out/Misses NTC-2A , 3A , 7A , 10A , 12A , 14A , 16A 
Backfire/Popback NTC-2A , 3A , 6A , 7A , 12A , 14A , 16A 
Runs Rough/Unstable/Erratic Idle (1) *
Poor Fuel Economy (1) *
(1) Perform TEST NTC-2A through TEST NTC-16A in sequence. See NO DTC TEST MENU  table.