Air Flow Sensor Bolts - Loose
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March 30, 1990
Subject: Air Flow Sensor Bolts
Model Group
944/T 2
Part Identifier Number
2445 9003
ATTENTION: Service Manager/Service Technician
This bulletin replaces Technical Bulletin Group 2, Number 9003, dated 3-23-90.
Models Affected: 944 2.7L and 944 Turbo Model Year 1989
Concern: Air flow sensor mounting bolts which are not secured with LOCTITE 270 may loosen due to normal engine vibration. These bolts and/or their washers could fall out and be drawn into the engine intake system.
Vehicle Information: Vehicles involved are from VIN numbers:
95_KN 150001 to 95_KN 151098-944 Turbo 94_KN 450001 to 94_KN 452631-944
These vehicles must be checked and repaired if necessary while the vehicle is in the workshop for normal service or other repairs.
Repair Procedure: 1. Remove air cleaner upper part and filter element.
2. Loosen sensor bolts by one turn. If moderate to heavy resistance to turning is felt, the bolts have LOCTITE 270 installed. Tighten bolts to 10 N-m (7.3 ft.lbs.) after checking.
Important All Mounting Bolts must be checked.
944 2.7L--4 Mounting Bolts 944 Turbo- 3 Mounting Bolts
3. If the bolts turn easily, they must be removed, cleaned and reinstalled using LOCTITE 270. Tighten sensor bolts to 10 N-m (7.3 ft.lbs.).
4. Reinstall filter element and air cleaner upper part.
Figure A:
5. Place a black paint dot on the air flow sensor (arrow Fig. A) to signity completion of repair.
General Information: When removing air flow sensor bolts that are secured with LOCTITE 270, apply a heat gun to the area of the bolt threads to soften the LOCTITE.
Threaded surfaces of bolts and sensor must be clean and dry before applying LOCTITE 270.
The use of LOCTITE 270 on the air flow sensor mounting bolts applies to all model years of:
924S, 944, 944S, 944 S2 and 944 Turbo
Labor Information: Warranty Code: R
Warranty Part ID: WL09
Defect Code: 66
Vendor Code: 290
Repair/Replace: Code 1 applying LOCTITE 270
Repair/Replace: Code 8 checking only
Labor Operation: 24 45 19 0A
Time Units: 50
Parts Information: Loctite 270: PN 928 101 921 00