Re: Hard Starting - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: Hard Starting
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Posted by Steve Crowe [Email] (more from Steve Crowe) on Sun, 14 Mar 2004 09:46:32 Share Post by Email
In Reply to: Re: Hard Starting, Ed, Sun, 14 Mar 2004 08:50:52
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Ed,

Since the problem occurs with 1/4 tank or less and if the car has the original fuel pump, I suggest installing an ejector valve kit on the fuel pump. The original did not have a check valve and the fuel in the plastic bowl would drop with the tank level. The new pumps have this and fuel in the bowl around the pump stays up.

The good news is that you don't have to buy a pump assembly to get the new style ejector. There is a kit part #5334198. This information was for 99-00 9-5s but I have seen it work for 9-3. If you get a new fuel pump from Saab it will come with this new style ejector.

The bad news is you have to pull the pump to install the kit. This means removing the fuel tank on your car. Be sure to install a new gasket between the fuel pump cover and tank.

Dean is also correct about changing fuel filter causing Fuel Pressure Regulator (FPR) failure. Current theory in our shop is this problem is caused by pieces of the fuel filter sealing washer rubber tearing off during removal of the banjo bolt and then getting into the fuel line and FPR.

At any rate, this is a possible solution. You could have other problems that could cause this problem. As a first step, I would want to look at fuel pressure, specificaly, does the fuel pressure drop to zero quickly after engine shut off?


Good Luck,
Steve Crowe, Saab Master Tech, who represents himself and no one else,
Harpers Ferry, WV

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