ozpilot

I just bought a 1995 993 which based on my reading here should be OBD I. The only issue is that the plug (just below the gear shifter on the drivers side) is not the nineteen round plug receiver I was expecting.

Its a parallel plug receiver that looks a lot like an OBD II. According to the factory the car is a 1995 model with an invoice date of 1995-01-25. Am I missing something?

e3photo

I would think it is OBD1. I think I recall someone mentioning OBD1 with an OBD2 connector.
I am sure someone will chime in and clarify.


Emerald

timothymoffat

Later 95s (95 cars were built from ~1/94-6/95) have the OBD2 connector I believe.

95C4VanIsle

I have a May 95 build date. I know nothing about electronics.

My connector is two lines in parallel. The one closer to the rear of the car has 8 slots and is slightly longer than the one that is closer to the front of the car, which also has 8 slots. I am guessing here but it looks like there are actually about ten slots that would make any kind of electrical connection (copper stuff in the area where the connector would be placed) based on what I can see with a flashlight and my old eyes.

Coleman

If I recall, on my 95 (OBD1) it says OBD1 on the plastic cover..

IamSMC

Post pics...

johnsjmc

The plug was changed in mid 95 but all 95s are OBD1

Falcondrivr

I have a late build '95. It is OBD1 with an OBD2 connector.

ozpilot

Here is a pic of the connector. Sure looks like an OBD II to me!

The reason I ask is that I'm having issues with my heating system (blows hot air). I've read here that it could be the servos or the CCU. I've also read that a quality OBD II scanner can tell me the source of the problem.

So it seems I have a II connector but not necessarily the II system. I would hate to spend several hundred dollars on an OBD II scanner when my car is not wired for it. Is there any way of knowing for sure what system I have?

btw the cover just says OBD.

Falcondrivr

The best info I have is that all '95s are OBD1, regardless of which plug you have.

Vorsicht

It is OBD I with a OBDII connection. You may want to look at the following option. It is a software and cable bundle that you plug right into the OBD port on one end and a laptop on the other end. It sells for around $300 (Enthusiast Version). It allows you to view fault codes as well as other info. I have no affiliation with the company.

www.durametric.com

PS Welcome to the wonderful world of rennlist.

993/907

Try this to check out your heating/cooling system.
Open the hood.
Under the windshield cowl, you will find a black plastic cover running the width of the trunk.
Remove the cover; it simply tucks into the rubber strip, no screws.
Operate your CCU controls and watch for movement of servos.
If all don't move, somethings wrong.
Next, remove the carpeted kick panel next to the drivers dead pedal.
You will find a 2" diameter orange fiber duct; this brings hot air from the engine bay.
Find the black plastic damper valve about midpoint of the duct; it has a servo attached that operates the damper blade.
Remove the one screw holding the duct and plastic piece together; you will be able to see/feel the damper blade operate if all is well.
Do the same thing in the passenger footwell.

Gordo

ozpilot

Thanks Gordo! I'll try that tomorrow.

baca

OBD1

mongrelcat

Very helpful link here, thanks to ToreB:
http://privat.bluezone.no/toreb2000/ccurepair.html