Engine - Idle Speed Varies Under Electrical Load

89ford23

IDLE-SPEED VARIES-2.2L-UNDER ELECTRICAL LOAD


Article No. 89-17-9

Figure 1:

FORD: 1989 PROBE


This TSB article is being republished in its entirety to correct the service information in Steps 3 and 4.

ISSUE: An idle speed fluctuation of 100-300 RPM while under electrical load may be caused by an incorrect idle speed setting. This condition occurs when the rear defroster or headlamps are turned on while idling.

ACTION: Make sure the engine idle speed is within specification. Refer to the following procedure for service details.

1. Warm up the engine. Run it for about three (3) minutes at 2500-3000 RPM in neutral.

2. Check to see if the idle speed is within specification. Idle speed should be: 750 RPM (+/- 25 RPM) in neutral, with the test connector GROUNDED, Figure 1.

3. With the test connector NOT GROUNDED, check to see if the idle fluctuates when the rear defroster or headlamps are turned "ON".

4. If the idle speed fluctuates, GROUND the test connector and adjust the idle speed to 950-1000 RPM. Refer to the 1989 Probe Shop Manual, Section 24-05 for service details.

OTHER APPLICABLE ARTICLES: None
SUPERSEDES: 89-11-6 (Dated 6/1/89)
WARRANTY STATUS: Eligible Under Basic Warranty Coverage

OPERATION DESCRIPTION TIME
891709A Adjust Idle Speed 0.3 Hr.

DEALER CODING
BASIC PART NO. CONDITION CODE
DRIVE H7
OASIS CODES: 620100, 620700