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C4
The Saga of Fitting a MoTeC M600 ECU to an Audi UrS4
The saga of fitting a MOTEC M600 ECU to my Audi UrS4 Tony Guttmann December 12, 2005 The Patient A 1994 UrS4, right-hand drive, living happily in Australia. The car has 57,000 miles on the…
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UrS4/UrS6 Europrice Short Shifter Installation
UrS4/6 Europrice SSK Installation While this write-up is specific to the Europrice SSK, it should be applicable to any SSK that replaces the whole shifter assembly, and can be used to R&R the stock shifter…
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Modified Front Top Mount Camber Plate – 1997 Audi S6
Archived technical drawing for a modified front top-mount camber plate for a 1997 Audi S6. Review all dimensions in the original drawing image before fabrication. Archived technical document. Review the original drawing or image gallery…
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UrS4/UrS6 Front Console Removal
UrS4/6 Front Console Removal *Have your radio code available* Step 1: Remove rear console (see separate write-up for this). Step 2: Open flap on console in driver’s side footwell and remove one (1) 8mm nut…
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Replacing a Failed Heated Seat Element
Replacing a Failed Heated Seat Element A common ailment in urS cars is failed front seat heater elements. This is a guide to replacing a bad heating element. Warning: This is not a quick or…
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C4 Temperature Flap Servo Motor Removal & Replacement
C4 chassis Temperature Flap Servo Motor R&R Step 1: Open the hood and remove the rain tray (Figure 1). It is secured by four clips. Lift up and slide toward the front of the car.…
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UrS4/UrS6 Rear Console Removal
UrS4/6 Rear Console Removal Step 1: Remove shift knob by unscrewing (standard RH thread). Step 2: Remove shift boot by prying gently at rear (Figure 1). There are retaining clips at the rear, and slide…
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Audi UrS HVAC Blower Removal & Replacement
Say, Bucky, is your squeaking heater blower driving you MAD? Is it? Don’t despair; it can be replaced without the agony of removing the heater box! The heater blowers on the old Type 44 used…
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UrS4 Sport Steering Wheel Conversion
UrS4 Sport Wheel Conversion This is a description of how to convert a UrS6 Sport Wheel to work on a UrS4 and have the turn signals cancel as designed. The original concept of cancelling ring…
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UrS6 Brake Servo Replacement
Douglas Fifield (douglas.fifield@gmail.com) July 2006 This write-up covers the replacement of the brake servo on a 95.5 S6. The master cylinder remained intact and connected, so there was no need to bleed the brakes upon…
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Phatnoise / Concert I Head Unit Installation Procedure
Phatnoise/Concert 1 Head Unit Installation Procedure This installation procedure is intended for the owner who is new to wrenching on his car. It will be infuriatingly detailed for someone who has had this area of…
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Audi UrS4 Samco Intake Hose Installation
Audi S4 Samco Intake Hose Install The Audi OEM intake tract hoses that carry pressurized air from the turbo to the throttle body have been known to fail under the higher boost pressures from a…
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UrS4 Seat Heater Controller Bulb Replacement with LEDs
The seat heater controllers on the UrS4 are illuminated by red bulbs mounted in a molded clear plastic light pipe. Since these controllers are lit whenever the ignition is on, the bulbs eventually burn out.…
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Audi UrS4 WiperWing Modification
The UrS4 has an airfoil integral with the wiper blade. This foil exerts a downward force on the blade and keeps the blade on the glass at high speed. The suspension points on the regular…
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Audi UrS4 Alternator Voltage Regulator Replacement
This is a very easy preventive maintenance procedure that you can “DIY= Do It Yourself”. You can replace the Voltage Regulator in your Alternator (also known as Generator) on the spot without removing the Alternator…
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Audi UrS Steering Damper Removal & Replacement
Audi UrS Steering Damper R&R The Audi UrS cars (1992 – 1997) have a hydraulic steering damper fitted, ostensibly to assist in controlling tramlining and steering wander with the wider tires fitted to these cars.…
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C4 Heater Core Replacement
C4 Heater Core Replacement by Dave F. (with Sean D. And Goran D.) April 2013 This is based on several sources including (underlined blue text = hot links) 1. Kinderutz's 2.5 hr miracle heater core…
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Audi UrS4/S6 TT HID Low Beam Projector Retrofit
Audi UrS4/S6 TT HID Low Beam Retrofit Semi-Obligatory Weasel Words This write-up will tell you how to retrofit HID projectors into UrS headlights. Knowing the laws and regulations of the jurisdiction in which you live,…
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UrS4 Central Hydraulic Fluid Flush
I was having two annoying problems with my ’94 Audi S4. 1. The red brake warning light indicating low hydraulic pressure would come on in the morning after the car sat overnight and stay on…
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DIY Carbon-Fiber Overlay for the C4 Climate Control Surround
DIY Carbon Fibre- overlay an Audi C4 Climate Control Surround Instructions –D. Forgie Mar. 18/08 The intent of this DIY is to give you enough hints so you can produce this: From this: To this…
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1.8T Coil Pack Conversion for the Audi AAN 20V Turbo
1.8t Coil Pack Conversion for the Audi AAN 20vt Dave Forgie, “UrS4boy” and “Librarian” October, 2005 Introduction I've been developing this conversion in my head for a number of years because I always thought that,…
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Audi AAN Timing Belt Removal & Replacement
Audi AAN Timing Belt R&R – 1994 S4 I've just finished the t-belt R&R on my '94 S4 and thought I'd put together a "how-to" while the agony is still fresh in my mind. I…
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1994 UrS4 ABS Defeat Switch Modification
’94 UrS4 ABS Switch Modification While driving at the world-famous Sundridge UrS-car ice races last year, I found myself wishing I could turn off the ABS on my ’94 UrS4. I began accumulating parts to…
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Audi UrS4 Clutch Master Cylinder Replacement
One of the “inevitable” UrS failures is the actuating rod on the clutch master cylinder. After a number of cycles, the rod snaps, the pedal goes to the floor, and you get to drive home…
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Audi UrS Fuel Line Maintenance
The three under body fuel lines on the UrS cars run along the right side of the car and are held to the body by rubber mounts secured by stainless steel clips. The outer line…
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Audi UrS4/S6 Rear Differential Side Seal Replacement
Audi UrS4 Rear Differential – Right and Left Side Seal R&R The following describes the procedure I used to remove and replace the right and left side rear differential seals on my 1994 Audi S4.…
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Stainless Steel Brake Flex Line Installation – UrS4
Stainless Steel Brake Flex Line Installation – 1994 AUDI UrS4 Why use stainless steel brake flex lines? The typical SS flex line consists of a Teflon inner tube to carry the brake fluid covered by…
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UrS4/S6 Camshaft Position Sensor Replacement
Difficulty starting engine when warm.
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