Saturn 2000 SL1 - 4 cylinder - won't start - we have changed the crank shaft positioner and car still does not start. There is no power to start the fuel pump. Fuel pump checks out good. Fuel pump not getting sygnal to send fuel to injection ports. NEed ideas!

Check for a shorted or grounded fuel injector the test light will flash but there's not enough current to move the injector. Use a DVOM check that they're all the same.

Check your PCM fuse

If I crank the motor while it is st ??????? Probably ignition module . When it shuts off check for spark .

Someone would need to check for power and ground at the coils and that the timing belt is ok.

check the crank shaft sensor ,check the timing belt . check the coil , check the fuel pump pressure

ihave a 98 grnd chrk lrdo had to replace computer on fire wall, periodicly i spray all electrical connections w/ crs electric contact spray.

Done cars have a kill switch if they are low on oil. Check your oil. If the oil is good, it may be the ignition switch.

If the engine fires up for a second or two with starting fluid then the fuel pump is weak.I would check the fuel pressure and if its not within the specs then replace the pump and filter.

have scanned to find problem code to get an idea of what it is. .it may either be the crank or cam sensor, check the crank sensor first. if it is bad it sends wrong timing info to pcm. therefore jeep will not start!! It is either the camshaft or crankshaft positioner. I would check the crank pos. first. Zach Cabot, AR
It is either the camshaft or crankshaft positioner. I would check the crank pos. first. Zach Cabot, AR
It is either the camshaft or crankshaft positioner. I would check the crank pos. first. Zach Cabot, AR

Fuel flow. Either simply, a blocked fuel line (debris / filter / fouled gas) or an electronic issue. Ever let this Jeep run bone dry on gas? Hopefully not, as doing so can draw a lot of crud into your fuel lines from the bottom of the tank. Electronically, if part of the Jeep "brain" has gone bad, there may not be any fuel being routed to the engine. This most likely needs a Jeep mechanic to repair.