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Home >> Jeep >> 1996 >> Grand Cherokee Limited, 5.2 Y >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Engine Controls - Tests W/Codes - 2.5L Flex Fuel) >> Self-Diagnostic Tests >> Test NTC-13A - Checking Engine Vacuum

Test NTC-13A - Checking Engine Vacuum

WARNING: This page is about a different car, the 1994 Plymouth Acclaim and 1994 Dodge Spirit. However, it is still accessible from the selected car via links, so may be relevant.

Connect a vacuum gauge to engine. Start engine, and let it idle. Normal vacuum reading will vary depending on altitude. Observe vacuum gauge at idle. If vacuum gauge reading is not steady 13-22 in. Hg, perform TEST NTC-15A. If vacuum gauge reading is steady 13-22 in. Hg, engine vacuum is normal. Test is complete. Perform TEST VER-2  .

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