Engine Performance - Poor or Intermittent Loss of Power

88porsche11

Technical Bulletin


Subject: Engine Performance
Model

911 Turbo

Part Identifier

2511
Group

2

Number

8811
ATTENTION: This bulletin supersedes Technical Bulletin Group 2, Number 8811, dated November 18, 1988.
Loose or poor ground connections may cause intermittent loss of power or poor engine performance. To check for this condition, inspect MP XII and correct as follows:

1. Remove intercooler.

2. Remove M8 nuts from locations A, B, and C.

3. Lift coil bracket and use sandpaper to remove the paint from bracket in the area of stud hole C top and bottom and stud hole B topside.

4. Clean ground wire terminal and check terminal crimping.

5. Apply light coat of battery pole grease on all cleaned bracket surfaces.

6. Reinstall coil bracket. Relocate ground wire A onto location B and torque M8 nuts to 20 N-m (14 ft.lbs.).

7. Reinstall intercooler using new O-ring seals.
Time Allowance: 50 T.U.
December 23, 1988