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The idle stabilizer valve, which is located in the bypass pipe, maintains the appropriate idle speed for various engine operating conditions. The idle stabilizer valve consists of a set of electrical windings, the valve plunger, a return spring and valve housing. The Digifant II control unit supplies the stabilizer valve with approx. 400 mA of current at idle. As current is passed through the valve windings the magnetic field 1989 Volkswagen Jetta L4-1781cc 1.8L SOHC (RV, PF) which is created regulates the position of the valve plunger. If the idle speed varies from the correct specification the Digifant II control unit increases or decreases current to the idle stabilizer in order to provide the necessary valve opening for idle stabilization.

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Note: With a used vehicle, we suggest a penetrating spray lubricant to be applied liberally to all exhaust fasteners and allowing a significant period of time for the chemical to lubricate the threads before attempting to disassemble. 1. The OE exhaust cannot be removed without cutting the pipe above the rear-axel area. Cut pipe as indicated using a metal-cutting blade (Figure 1). Support the muffler as needed while cutting. 2. Loosen the (2) clamp bolts as shown (13mm) and slide clamp towards front of vehicle. (Figure.2) 3. Using a muffler stand or an additional person to hold the muffler assem- bly up into position, slide the (2) hangars out of the rubber isolators and remove the front muffler assembly. Keep the hardware for use during the installation of your new exhaust system. (Figure 3) 4. Slide the (2) hangars out of the rubber isolators and remove the rear muf- fler assembly. Warning: Use extreme caution during installation. Torque all fasteners according to manufacturer’s torque values and tightening sequence. DO NOT use air impact tools to tighten fasteners on Borla Performance Exhaust Systems. Use of such tools may result in bent flanges or gasket contact areas leading to exhaust leaks. TITLE: 2009-2010 Volkswagen Jetta TDI Sedan and Sport Wagon TDI Installation Instructions (pn-140317)

Repair information includes:
* Comprehensive factory repair procedures
* Online repair content and software updates
* Technical Service Bulletins (TSBs)
* Component Locations
* Electrical Wiring Diagrams
* Diagnostic Codes
* Maintenance Schedules
* Fluid Capacity Charts
The Volkswagen Jetta: 2005, 2006, 2007, 2008 Repair Manual

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1995-96 STARTING & CHARGING SYSTEMS Volkswagen Starters Cabrio, Golf III, GTI, Jetta III DESCRIPTION Starter is a brush type, series-wound electric motor with an overrunning clutch. Field frame is enclosed by commutator end frame and drive bushing, and carries pole shoes and field coils. A splined armature shaft drive end carries drive assembly. TROUBLE SHOOTING NOTE: ON-VEHICLE TESTING STARTER DOES NOT CRANK ENGINE 1) Ensure battery is fully charged. Ensure electrical and ground connections are clean and tight. With ignition switch in START position, measure voltage at spade terminal of starter solenoid. Reading should be at least 8 volts. If voltage is as specified, go to step 3). If voltage is not as specified, go to next step. 2) Measure voltage at ignition switch. If reading is at least 8 volts, check wiring between ignition switch and starter solenoid. If voltage is not as specified, replace ignition switch. 3) While operating starter, measure voltage at field (starter) terminal of starter solenoid. If reading is at least 8 volts, repair or replace starter. If reading is less than 8 volts, replace starter solenoid. NOTE: See TROUBLE SHOOTING article in GENERAL INFORMATION. On vehicles with automatic transmission, also check park/neutral switch. STARTER CRANKS TOO SLOWLY TO START ENGINE Ensure battery is fully charged. Ensure electrical and ground connections are clean and tight. If necessary, clean and tighten ground strap between transmission and body. DO NOT loosen ground strap on body. If starter still turns slowly, repair or replace starter. REMOVAL & INSTALLATION Removal & Installation 1) Disconnect negative battery cable. Support engine/transmission assembly with Support Beam (VW 10-222A) and Leg

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Trailer Lights Inoperative, Update Programming (Flashing) Trailer Control Module Subject: Model(s): Touareg with Trailer Towing Accessory Package 2004 Condition Trailer Lights are inoperative. May require Trailer Control Module (J345) “Update – Programming” to increase electrical capabilities from 4 amps / 50 watts to 8.3 amps / 100 watts to accommodate trailers with large electrical draw. Service Tool requirements z VAS 5051 or 5052 (with Basis CD V.06.05 and the Brand CD V.06.48 or higher) with old diagnosis logs erased prior to start. z “Update – Programming” (flashing) CD W42TOUAREGTHCD. z VAS 5051: connected to vehicle and to 110V AC Power supply at all times during procedure. z VAS 5052: connected to vehicle with battery voltage requirements met.