Question about 1989 Saab 900 4 Door

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1989 Saab 900

Car goes down road but won't go any faster than 30 mph

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Have you checked your timing, position of the distributor. I know after doing some minor adjustments had a very similar problem. also check all your vacuum connections, this will cause a very similar problem

Posted on Sep 22, 2008

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I have a 89saab. I have no power to the fuel pump?


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To test the relay, remove it and jumper between sockets 30 and 87b (middle and bottom); if the pump runs, the pump is OK and the relay suspect. If the pump doesn't run, then a circuit is suspect, eg power from relay to pump, or power from battery to relay, or a ground connection. To check these you'll need a wiring diagram - get the "Bentley Bible" - aka the Saab 900 Official Service Manual, costs about $40 from Amazon!

16 valve manual: http://www.amazon.com/Saab-900-Valve-Service-Manual/dp/0837603137

8 valve manual :http://www.amazon.com/Eight-Official-Service-Manual-1981-1988/dp/0837603102
get the appropriate manual for your car and enjoy the Saab!


Most likely it's the relay.


Possible other causes are:
blocked fuel filter - under right rear, in front of gas tank (fuel spills are dangerous - don't smoke, etc!);

broken wire connection to pump - check continuity between fuse 30 and pump connection;

dead pump - you could provide power to the pump to check if it runs;

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