HELP -- Saab 9000 fuel pump

Aug 02, 2003 6 Replies

I'm turning to you folks for help on further diagnosing my no-start condition on my 93 Saab 9000 (2.4L non-turbo). I shut down the other day to go shopping and when I got back it wouldn't start. On the first attemp it started but stumbled and died. The next few tries were the same, then it would just fire, and then it wouldn't even do that. I'm almost certain it's a fuel related problem (I here the DI casette buzzing so I don't think it's ignition).



The fuel system and pump relays check out OK. I'd like to check the pump by applying 12V directly to it to see if it starts. There are 4 wires at the pump - a thin black and a thin white, and a thick black and thick grey/white stripe. Does anyone know what the wires are for and what voltages I should read on them?? Also, if I want apply power to the pump, which wires do I use (and what's the polarity).



ALSO, does anyone know of a reasonable source for the pump!!!



ANY HELP WELCOME.



Thanks,


-- Joseph P. Levantino Quality By Design - "One Call Does it All" Complete Home Improvements - carpentry - ceramics - painting



732-747-1974 snipped-for-privacy@hotmail.com

Grunff - can the 9000 fuel pump be jumped at the fuse box like the c900?

My 93 9000 2.3i had the same problem at only 7 years 180' km-s. Pump was stuck. Mine was a Walbro unit, not Bosch. Try

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Frode

J. Levant> I'm turning to you folks for help on further diagnosing my no-start

Thanks all for your help. The problem was indeed the fuel pump. I was able to purchase an exact replacement Walbro "pump insert" (just the electric pump part) and install it into the in-tank housing. The hardest parts of the job were removing the large locking ring that holds the pump assembly into the tank (I made a "spanner" out of a piece of 1-by-6 lumber) and then removing the plastic fuel line that connects the electric pump to a T fitting. I had to cut off the plastic tubing and replace it with a piece of high-pressure fuel injector hose and clamps.

The car started right up and runs great.

Joe

-- Joseph P. Levantino Quality By Design - "One Call Does it All" Complete Home Improvements - carpentry - ceramics - painting

732-747-1974 snipped-for-privacy@hotmail.com

How do you go about undoing the "Jumped at the fuse" thing. I noticed that my 900 Aero has no fuel pump relays in the relay box under the bonnet. I assume that it has had this trick doen to it then.

When I jumper a 900 relay, I do it at the relay - because I'm usually about to change the relay.

To jumper at the fusebox, all you gotta do is connect a 12V live to the fuel pump fuse, and that's it!

Look for any wires that don't look like they belong.

Cheers. I shall have a look. Fuel pump only runs when the car is running as you would expect, but there is no fuel pump relay, and it akes a few cranks to fire.

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