I have a 89 turbo that needs some love and I was preparing to start doing some work on it and I decided to started so that I can move out the garage so that I can clean up the space to start working on the top replacement and the interior but the car starts but is to weak to actually run.
I swapped from the parts car :
and I got another 3 ECU two that were working and the original of the car.
After changing those components the car still runs pretty rough and it doesn't accelerate at all like if there wasn't enough gas or pressure.
Then I tried to fill up the tank to see if it was the pre pump but nothing ( I have like 40 L of gas on it now).
The car starts after some cranking and then keeps running rough but when I try to accelerate the car you can feel that is trying but it does'n accelerate and it keep running after..
I installed back the instrument panel following some advice from some people in saabcentral but still no go.
There is some instances where you can feel that the car will come back to full power but it only last few second and then returns to bad(I haven't seen that for a while now).
Following bentley's I tested :
Voltage on the pump : reading 12.03v
Voltage in the relay while cranking on 85 and 86 = 10.5-11.2v
Jumper on fuse 30 = pump runs.
Jumper on relay conector 30-87b = pump runs
My pump is a roller type so I tested the feed pump and it works.
Tested fuel delivery running the pump for 30 sec = 930 ml on container.
So it looks like the pump gets the correct voltage, de ECU detects spark and grounds the fuel pump relay and all that is happening but still running terrible.
Then I god a banjo bolt adapter for the fuel rail to test the fuel pressure to eliminate the pump and I got 40PSI on idle that is within normal values.
Today I got the third ECU from a running car and nothing and I changed the distributor cap and nothing.
I uploaded a video to youtube please watch it completely so you can see how the car is running : Saab 1989 Turbo convertible running problems - YouTube
I need help, this is killing me.