Steering Wheel - Vibration Felt/Noise Heard
91ford18
Article No.
91-11-3
05/30/91
^ IDLE - ROUGH - 2.2L ALL WITH ATX TRANSAXLES
^ NOISE - "WHINE" AT IDLE SPEED - 2.2L ALL WITH ATX TRANSAXLES
^ VIBRATION - FELT IN STEERING WHEEL AND DRIVER'S SEAT AT IDLE
FORD: 1989-91 PROBE
This TSB article is being republished to add new service parts and expand the model year coverage to include 1991 units.
ISSUE: A vibration felt in the steering wheel and in the floor or driver's seat or a boom/beat may occur when the engine is warm, at idle and with the transaxle in gear. These conditions can also occur with the air conditioner and cooling fan engaged. They may be caused by stiff radiator and engine mounts or by the position of the upper radiator hose clamp that contacts the under side of the hood and the exhaust insulators. Low idle RPM will also contribute to this concern.
ACTION: Install new lower radiator mounts and new number 1 & 2 engine mounts that are made from softer materials. Adjust idle and timing, inspect A/C lines and remove the exhaust mounts. Refer to the following procedure for service details.
1. Run the engine until normal operating temperature is reached.
2. Check and adjust the ignition timing and idle RPM to the specifications as shown on the engine decal. Refer to the 1991 Probe Shop Manual, Sections 03-07A and 03-07B, for timing and the 1991 Engine/Emissions Diagnosis Shop Manual, Volume H, Section 11-6, for idle speed adjustments.
NOTE: WITH THE STI TERMINAL GROUNDED, TURN THE IDLE AIR ADJUSTMENT SCREW COUNTER-CLOCKWISE TO INCREASE RPM TO 1,000, THEN TURN OFF THE ENGINE AND DISCONNECT THE STI JUMPER WIRE.
3. Restart the engine and confirm that the By-pass Control Valve (ISC) is controlling the RPM to the upper limit of the specification.
Figure 1:
4. Replace the lower radiator mounts. Refer to the Parts Block for correct parts usage. The new mounts are softer.
5. After the new mounts are installed, confirm that the upper radiator location studs are centered in the upper radiator mounts, Figure 1.
Figure 2:
6. Replace the # 1 and # 2 engine mounts, Figure 2. Refer to the Parts Block for correct parts usage.
7. Inspect the upper radiator hose clamp. If the clamp release tips are straight up, rotate the clamp about 90~ to the left. This will provide clearance between the clamp and the underside of the hood.
Figure 3:
8. Refer to Figure 3, for identification and location of the rubber exhaust mounts.
a. Remove the clamp and mounts.
b. Reinstall the bolts to prevent water leakage.
Figure 4:
9. Check the A/C system components/lines for any interference between the condenser and the radiator, Figure 4. Reposition as needed to obtain clearance.
10. Make sure that the cooling fan/condenser fan is not contributing to the idle vibration.
a. Turn on the A/C system, confirm that the compressor and fans are operating.
b. Inspect the fan mountings for proper position. Check to see that the bolts are tight.
PART NUMBER PART NAME CLASS
F12Z-6068-B # 1 Engine Mount (2.2L C
Non-Turbo)
F12Z-6068-A # 1 Engine Mount (2.2L Turbo) C
F12Z-6038-A # 2 Engine Mount (2.2L All) C
F02Z-8125-C Radiator Lower Mount (1989 C
2.2L Non-Turbo)
E92Z-8125-A Radiator Lower Mount (1990 B
2.2L Non-Turbo)
E92Z-8125-B Radiator Lower Mount (1990 B
2.2L Turbo)
OTHER APPLICABLE ARTICLES: None
SUPERSEDES: 89-19-4, 90-21-6
WARRANTY STATUS: Eligible Under Basic Warranty Coverage
OPERATION DESCRIPTION TIME
911103A Install Engine Mounts And 1.4 Hrs.
Lower Radiator Mounts.
DEALER CODING
BASIC PART NO. CONDITION CODE
6068 67
OASIS CODES: 608000, 608400, 703000, 703100