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993 Servicing items:

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Old 06-26-2013, 06:39 PM   #1
pp000830
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Default 993 Servicing items:

Things to consider servicing / replacing for the new to 993 owner for a car with over 80K miles on the clock:

Just a few IF items, items with a “*” can be done at home with basic tools:

• Clutch IF not done once in the past;

• 1st & 2nd gear synchros IF the gears tend to ding while shifting especially in cool weather when the car is cold. This is not a common occurrence, just an experience I had.

• Steering rack rebuild IF leaking - inspect with the under body cover off; a little weeping of the fluid at the rack ends is OK as the end boots tend to not seal very well as they age. Wet dripping on the underbody cover suggests an established leak.
See Rennlist posting
"Steering Rack Replacement Notes"
also see
"MacPherson Strut Spring Compressor Set”
transforming the ride of the car. Also see
“How to jack the car up”
safely. An inexpensive height adjustable option I have had great daily driver results with is the "H&R Street Performance Coil-Over kit 29954-1" , both springs and matched struts for all four wheel-ends, cost about $1900 if you shop around. You can reuse the existing rear torsion bar down links with this kit. Lots of aspiring track guys buy kits with adjustable valving for a considerable premium over this kit.

• *Tie rod ends if play is present - if end boots are cracked just replace the boots. See: "Energy Suspension Tie Rod End Dust Boots ". Simple tool to do this at home; See “Tie Rod and Pitman Arm Puller”

• Suspension bushings IF car does not feel tight after an alignment;

• Distributor belt replacement if not done once in the past;

• *Odometer gear replacement if odometer is not working or not done once in past, easy kitchen table project. See “How to repair a broken odometer”

• *Air Flow sensor and idle valve should be cleaned. The idle valve should never need replacement, just cleaning until the valve internals rotate freely when you shake the unit. See “993 Idle Stabilizer Valve (ISV) Cleanout”.

• The air flow sensor will need to be cleaned with a Q-tip as just spraying it out will not release the grey debris coating on the
sensor element, the element when clean looks like a white circuit board.
See Rennlist posting: “Mass Air Flow Sensor MAF Cleaning does it work?”,

• Door check strap making a loud click or pop when the door is opened or closed. You may instead observe the strap mounting point on the A pillar shifting slightly as you open or close the door. This is a very common body part failure and relatively expensive fix but easy to avoid. See Rennlist posting”The dreaded check strap click”. There is a DIY to modify the check strap reducing forces and greatly reducing the likelihood of the check strap progressing to failure going forward. I would do this modification as soon as I get the car. See: “[Modifying] 993 Door Check-Strap Detent Assembly”


Be aware that the clutch and transmission can be serviced on a 993 without removing the engine. Some technicians neglect to tell you this and want to charge you for the labor on a full engine out.

Also the 993 has OBDC so if the ignition wires are bad or the rotor or cap are bad or the plugs are fouled the light will likely be on.

As you can see above there are really very few unique items that may need attention on a 993 as these cars get older, a testament to the quality of the engineering and build on these cars.

If the car starts easily and runs reliably do not consider any actions that involves internal engine repairs. 993s tend to have a little uneven rumble at idle – this is normal. A slight cycling of the RPM on cold days, a small stumble on acceleration when the engine is cold or in very hot weather, an engine that uses some oil between oil changes, this is normal stuff.

A puff of smoke after sitting a while is OK, think “What would Jerry say?”

And most importantly don’t go Neurotic, just enjoy the car!
You know the line, “accept the things I should not fix, have courage to fix the things I must and have the wisdom to know the difference”
Andy
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Last edited by pp000830; 06-27-2013 at 08:44 AM.
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Old 09-26-2014, 07:38 PM   #2
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Old 10-01-2014, 06:00 PM   #3
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3/1/015 New Updated List attached:
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File Type: pdf Service Items 993 V12-02.pdf (471.7 KB, 82 views)

Last edited by pp000830; 03-01-2015 at 10:13 AM. Reason: Refresh list
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Old 01-18-2016, 08:27 PM   #4
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Default 993 Service Item List

New Updated List attached:
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File Type: pdf Service Items 993 V17-2.pdf (1.71 MB, 7 views)

Last edited by pp000830; 10-18-2016 at 07:16 PM.
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