1995 saab 900 turbo
Two most common problems for this are the DIC and the fuel pump. Can also be the CPS.
First check the code. You can try this first before going to a code reader:
1.With the car already off, switch on the ignition without starting the engine.
2. After approx. 6 seconds, the 'Check Engine' light goes out for an instant before lighting up again for 3 seconds. This 3 second flash is a warning that the actual flashing code is about to start.
3. The flashing code consists of a number of short flashes lasting 0.4 seconds. The 'Check Engine' light goes out for 2 seconds between each new flashing code (if there is more than one fault).
4. After the last flashing code, the 'Check Engine' light goes out for 3 seconds before lighting up again for 3 seconds, after which the flashing codes are repeated. Readout continues in this way as many times as you wish.
Number of flashes / Function
2 / Manifold absolute pressure sensor
3 / Temperature sensor, manifold
4 / Temperature sensor, coolant
5 / Throttle position sensor
6 / Oxygen sensor
7 / Adaptation
8 / Purge valve (EVAP valve)
9 / ECM, internal fault
If no flashing codes display, the problem is something else (other than those nine listed above) and must be determined using a generic code reader that supports OBD 1, or using the GM/Saab Tech II code reader and programmer.
My money is on the DIC as it is a very common failure component and fuel pump failures rarely throw a code. The DICs are good generally to 100,000 to 150,000 miles, but this varies wildly, especially if the car is run with overgapped plugs for any length of time. The plug gap should be 1 mm and no more. Cars that are scrupulously maintained vis-a-vis the plug gapping can see DICs last over 200,000 miles.
Jun 09, 2009 |
1996 Saab 900