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Discussion Starter · #1 ·
I have a 88 900 turbo that will not start, its getting spark, and the fuel pump relay is activating and sending voltage to the fuel pump, but there is no voltage at the fuel pump, is there anything else between them that could be causing this problem other than bad wiring, or could I be looking in the wrong place? All help will be greatly appreciated thanks
 

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You measured 12+volts at the fuel pump connection?

If you did, it sounds like your fuel pump died.
 

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Discussion Starter · #4 ·
there is power at the relay but there is no power at the fuel pump connector. Is there any component or fuse between the fuel pump relay and the fuel pump that could cause the voltage not to make it to the fuel pump?
 

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there is power at the relay but there is no power at the fuel pump connector. Is there any component or fuse between the fuel pump relay and the fuel pump that could cause the voltage not to make it to the fuel pump?
A bad fuel pump could pull down the voltage (in a loaded failure condition) when measuring at the pump. To my knowledge there is no fusing in between the relay and the pump assembly. Pull the connector off of the pump and check for +12 volts while disconnected. This will help you rule out the wiring.
 

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Discussion Starter · #6 ·
Ok so i tried to jumper the fuel pump relay again and it worked this time, but it still wont come on by turning the ignition or trying to start it. I found that the two smaller wires on the ignition coil were switched around, could this be the problem and could it have caused damage to anything else?
 

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Discussion Starter · #11 ·
how do u check the ingnition switch? I still have not been able to get the 900 to start, ive checked all the grounds, relays, ive switch out the apc ecu and the main ecu with know working units, and a known good distributor, and the ignition amplifier. it is getting spark but is not turning on the fuel pump or injectors. please help i to desperatly need to get it running thanks
 
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