Whistle Noise from Engine Compartment – 2007 Mitsubishi Raider

SUBJECT:

WHISTLE NOISE FROM ENGINE COMPARTMENT

No: TSB-07-13-003REV
DATE: April, 2007
MODEL: 2007 Raider 3.7L

 

PURPOSE

A slight high frequency (pitch) whistle-like sound may be heard while driving at any ambient temperature or engine temperature. The noise is most noticeable under load, with light throttle between 1,200 to 2,000 RPM.

 

AFFECTED VEHICLES

2007 Raider 3.7L V6 only produced on or before March 12, 2007

 

 

PROCEDURE

1. Record the radio presets and disconnect the negative battery cable.

2. Disconnect the intake air temperature sensor.

3. Remove the air intake tube at the throttle body.

throttle body
4. Remove the four throttle body mounting bolts. Then remove the throttle body from the intake manifold and place to the side.

5. Check the condition of the throttle body-to-intake manifold o-ring and replace if necessary.

6. Clean mating surfaces of throttle body and intake manifold.

intake manifold-to-throttle body joint
7. Apply a small diameter bead (about 1 mm) of RTV to the intake manifold-to-throttle body joint, inboard of the o-ring. The RTV is to be applied to the lower section of the joint between the lower two throttle body bolt attachment holes as shown.

8. Reinstall the throttle body. Tighten the four attachment bolts to 60 in lbs (7 Nm).

9. Wipe off all excessive RTV from the inside of the joint.

10. Reinstall the air intake tube at the throttle body.

 

11. Reconnect the intake air temperature sensor.

12. Reconnect the negative battery cable and reset the radio presets and clock.

13. Verify the condition no longer exists.

 

PARTS INFORMATION

Use the Genuine MitsubishieBay logo Parts listed below.

DescriptionPart Number
Liquid Engine Gasket RTVMD970389

 

WARRANTY INFORMATION

Sealing Throttle Body To Intake Manifold
Nature Code: 73L Cause Code: 450
Labor Operation No. 09500196 Time Allowance: 0.5 hr.
Warranty Coverage: Basic coverage 5 years/60,000 miles
Special Warranty Information: Normal warranty procedures apply.

 


 

 


 

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