1988 Audi Coupe engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAuxiliary assemblies


Auxiliary drive belt tensioner	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
Auxiliary drive belt tensioner	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAlternator

expand_moreClamping screws


Tensioning screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreRetaining clamp


Screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreScrews


Bottom	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreServo steering pump


Tensioning screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreCylinder head


Valve cover	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreEngine block

expand_moreConnecting rod bearing


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Use new screws.
Second stage	90°90°90°

expand_moreCrankshaft central screws

expand_moreAudi gasoline straight-5 2.3 L NG 134 HP


Special tool 2079	258.15 lbf⋅ft258.15 lbf⋅ft350 N⋅m
Otherwise	331.9 lbf⋅ft331.9 lbf⋅ft450 N⋅m

expand_moreAll other modifications


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Use new screws.
Second stage	90°90°90°

expand_moreCrankshaft pulley


All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreDrive plate


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreFlywheel

expand_moreAudi gasoline straight-5 2.3 L NG 134 HP


First stage	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Use screw-locking compound.
Second stage	100°100°100°


Main bearing	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
Use new screws.

expand_moreVibration damper

expand_moreAll other modifications


Class 10.9	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Class 8.8 screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreEngine control

expand_moreCamshaft timing gear


All other modifications	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Use new screws.

expand_moreDrive belt tensioner device


Audi gasoline straight-5 2.3 L NG 134 HP	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreToothed belt guard at the bottom


Audi gasoline straight-5 2.3 L NG 134 HP	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreAll other modifications

expand_moreScrews (M6)


Bottom	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreMetal cap at the top


Screws	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m


Nuts	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_morePlastic cap on the top


Screws	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreToothed belt guard at the top


Screws	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreToothed belt tensioning roller


All other modifications	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreEngine lubrication

expand_moreOil drain plug


All other modifications	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreOil sump


All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreEngine management


Knock sensor	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreLambda sensor


All other modifications	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreExhaust system

expand_moreExhaust manifold


All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace nuts.

expand_moreIgnition system

expand_moreSpark plugs


All other modifications	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1988 Audi Coupe user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Audi warranty policy for your region. In some regions DIY service may invalidate your warranty.

Maintenance Items

Engine Fastener Tightening Specifications
Front Suspension Fastener Tightening Specifications
Rear Suspension Fastener Tightening Specifications
Transmission Fastener Tightening Specifications

Service Intervals

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Audi Coupe service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 1988 Audi Coupe you're not only saving money, but also also improving your technical skills and learning something new.

1988 Audi Coupe generations

In 1988 Audi offered 2 generations of the Coupe. Engine fastener tightening specifications may vary in different generations. Be sure that you are looking at the rigt modification.

B2 facelift

Type 81, Type 85

1988 Audi Coupe B3 Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

1988 Audi Coupe generations

B2 facelift

Audi Coupe B3 model years

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