ENGINE MISSES - ALL CONDITIONS INSTALL SPARK PLUG WIRE CLIPS. Saturn Saturn 1991

For 1990-2009 cars

# ENGINE MISSES - ALL CONDITIONS INSTALL SPARK PLUG WIRE CLIPS

#### SUBJECT: Engine Misses During All Driving Conditions (Install New Spark Plug Wire Clips)

#### MODELS AFFECTED: 1991 and 1992 SL2 and SC Saturn vehicles with DOHC (LLO) engines -----------------------------------------------------------------------------

#### CONDITION:

---------- Engine misses during all driving conditions.

#### CAUSE:

------ The number one spark plug wire may contact the hood insulator and/or the spark plug wire harness may contact the camshaft cover, damaging the insulation on the spark plug wire(s). If this insulation becomes damaged, a short to ground can result causing an engine miss.

#### CORRECTIVE ACTION:

Inspect the number one spark plug wire and hood insulator for signs of contact. Also, inspect the spark plug wire harness at the camshaft cover for signs of contact. If there is indication of rubbing damage to any spark plug wire, replace the damaged wire(s) and install new spark plug holding clips according to the following procedure. NOTE: The 4-way spark plug wire clip (P/N 12034561) is designed so that it can be cut in half and used to retain two spark plug wires instead of four. If there is no evidence of spark plug damage, refer to the "Electronic Engine Controls Service Manual" for diagnostic procedures to correct the concern.

#### PROCEDURE:

---------- 1. Inspect the #1 spark plug wire for evidence of damage or contact with the hood insulator. If there is any evidence of damage or contact, install a 4-way spark plug wire clip (P/N 12034561). Before installing the clip, cut it into two equal parts and smooth out the cut end. Horizontally install this half of the clip approximately 50mm (2 in.) from #2 spark plug boot (refer to Figure). Replace spark plug wire if there is evidence of damage to the wire.

2. Inspect the spark plug wire harness for evidence of damage or contact with the camshaft cover. If there is any evidence of damage or contact, install a 4-way spark plug wire clip (P/N 12034561). Replace any damaged spark plug wires. Refer to the following Figure for correct clip location and spark plug wire routing.

#### IMPORTANT: The hose clamp tab should be at a 12 o'clock position as shown in Figure.

#### PARTS REQUIREMENTS:

12034561 4-Way Spark Plug Wire Clip 21020652 Spark Plug Wire #1 21020655 Spark Plug Wire #4

#### CLAIM INFORMATION:

To receive credit for this repair, submit a claim through the Saturn Dealer System as follows: Labor Case Operation Type Description Code Time ---- ----------- ---------- ---- VW Inspect Wires and Install Clips T9561 0.4 hrs

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.