993 Faq Frequently Asked Questions about the Porsche 1994-1997 993



Filed under: Uncategorized — Jeff 993TT @ 12:50 am

Note: Posted by David Edwards (dwe8922@yahoo.com)

A while back, I had a problem of my car not starting. It would turn over, and not fire. After much searching, I narrowed it down to the DME relay. I bought a new one, and kept it in the car until the problem arose. It did today, and after I popped in the new relay, it worked fine.
I mentioned this in tangent on a thread already, but its worth mentioning again. Porsched used a relay with a 944. part # prefix well into the 993 run, and later replaced that part with part # 993.615.227.00. The 944. relay was found to be faulty. My hometown dealer says they replace the 944. relay on all the cars they service as a precaution. At $15 from Hendrick Porsche, its cheap insurance.


Filed under: Uncategorized — Jeff 993TT @ 12:50 am

Make sure that you raise the seats _before_ you start working.. Makes access to the seat bolts much easier. I guess there is something to be said for avoiding late night car maintaince..
I was struggling to get the bolts in and then I looked over to the passenger side and thought, now why is there so much space on that side? *Light bulb went off over my head*


Filed under: Do It Yourself (DIY),Transmission — Jeff 993TT @ 12:47 am

Changing my transmission oil was pretty easy and my shifting action is much smoother.. It also gives me more peace of mind. There aren’t any filters in the trans! Really the hardest part was jacking up the car onto 4 jack stands.
I used 4 quarts of Amsoil 75W90 syntethic oil. Interestingly, it was pretty difficult to find Mobil 1 gear oil, which was my first choice. I found mostly Amsoil and Redline in shops. This oil wins the more colorful prize. It was a light blue color.

The manufacturer recommends doing this change at 30K, but at 19K miles, my trans oil was pretty dark and murky. There were a few shavings on the magnetic plug, which I cleaned off. ( See pic below. )

Thanks to Robin for a wonderful DIY. It helped me tremendously. Here are a few tips for the first time DIY’er that would be helpful.

a) You may need to put blocks under the rear wheels while jacking up the front of the car. With the front already on jack stands, the jack has less clearance to get under the tail of the car. My car isn’t lowered, but I needed the cinder blocks in the picture to get the jack under there. I used the rear engine jacking point without problem. The hockey puck trick worked great!

b) Definately use a 10 MM allen key socket. I had to purchase a 3/8″ to 1/2″ drive adapter to use a bigger ratchet handle. Those bolts are on pretty tight.

c) Robin’s DIY recommends that you remove the filler plug first, which is a good idea. However, it makes more sense to just make sure that you can loosen both the filler and drain plugs. You don’t have to remove them right there, otherwise, trans oil will start to flow out of the filler.

d) If you wait about 1/2 an hour for all the old transmission fluid to drain out, it will take all 4 quarts of the new fluid without spilling out of the filler tube. Just keeps things a bit cleaner. I liked the “oil bong” technique. It worked great. I used 7/8″ tubing and shaved down the end a bit. I then screwed it into the filler plug. If I were to do it again, I would have purchased an extra quart of AMsOIL to run through the transmission case to flush out any extra impurities.

e) Also, you will have to take off the driver rear wheel. I ended up taking off both rear wheels, becuase I couldn’t tell in Robin’s picture which one to do.

Here is a link to the gallery:


993 3rd Brake Light fix

Filed under: Electrical System,Lighting — Jeff 993TT @ 10:59 pm

Want to replace those broken bulbs in your 993 3rd brake light ? Follow this DIY

3rd brake light DIY

993TT short shifter pic

Filed under: Turbo — Jeff 993TT @ 10:56 pm

Image that shows how the transmission tunnel needs to be modified to allow for short shifter install.

Oil change on a 993TT

Filed under: Uncategorized — Jeff 993TT @ 10:53 pm

Save money and do your own oil changes!

( well, it’s a weak rationalization for a 100+K MSPR car, but every bit helps with the wife.. 🙂

Porsche 993TT Oil Change DIY

Oil cooler fanswitch install!

Filed under: Uncategorized — Jeff 993TT @ 10:51 pm

I created a DIY to install an override to keep your fan on all the time to keep your oil temps lower.

Oil Cooler Fan Switch DIY


996 Companion

Filed under: Books — Jeff 993TT @ 3:21 pm

Just saw that Adrian published a new book for the 996:



993 Companion Book

Filed under: Books — Jeff 993TT @ 2:11 pm

I’m finally published! Well sort of..

Here is Adrian Streather’s book ( ISBN:1904788947 ) for the Porsche 993. Great job Adrian!

Your truly has some photos of my polar silver 993 turbo in there.

Here is a link to the book on amazon!


Turbo Modifications

Filed under: Links,Turbo — Jeff 993TT @ 10:31 pm

Here is an excellent site on how to modify your turbo:

993 Twin Turbo Mods

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