Engine Controls - Cold Start High Idle Condition

00-014

July 26, 2011

Applies To:
1999 Passport - ALL with A/T and California Emissions

High Idle After a Cold Start

(Supercedes 00-014, dated June 5, 2000, to update the information marked by the black bar).





REVISION SUMMARY

SYMPTOM

Sometimes alter a cold start, the engine remains at fast idle after it has reached normal operating temperature. It will idle normally after being shut off and restarted.

PROBABLE CAUSE

In certain conditions, the PCM delays the switch, or does not switch, to feedback idle control.

CORRECTIVE ACTION

Update the PCM software with the Smart Cable.

TOOL INFORMATION

PGM Tester with software update released June 1, 2000.

For the other tools and equipment you need to update the PCM software, refer to Service Bulletin 99-005, Updating the Passport PCM, filed under Tools.





WARRANTY CLAIM INFORMATION

REPAIR PROCEDURE

1. Retrieve the PCM broadcast code with the PGM Tester or the Smart Cable (refer to Service Bulletin 99-005).





2. Compare the retrieved code with these codes shown.
^ If the code is in the list, continue to step 3.
^ If the code is not in the list, the PCM has already been updated. Troubleshoot other causes for the high idle condition.

3. Update the PCM software with the Smart Cable. For instructions, refer to Service Bulletin 99-005.

4. Use the PGM Tester to clear any DTCs.

5. Retrieve the broadcast code. Make sure it does not match any of the codes in the above list.





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