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no spark or power to fuel pump; 92 geo metro lsi 1.3 l 4 cyl
Topic Started: Apr 24 2014, 08:29 PM (431 Views)
acedoggy
New Member
[ *  * ]
I have a 92 geo metro 4 cylinder it won't start I've tried all fuses checked the connections the engine turns over but no spark or power to the fuel pump. I'm out answers and would appreciate any help. Thanks
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mwebb
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FOG

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follow the diagram
the main relay powers up the fuel pump relay
fuse 1 powers up the main relay

the fuel pump relay only runs a few seconds during key on , unless the engine is running
or
it runs during starter operation

key on
if the injector has B+ on either pin when probed using T pin (see T pin article in this forum ) then the main relay is powering up and fuse 1 is "ok"
also
either pin of the IGN coil should show 12v positive when the key is in the "on" position

if yes
then

if the CMP sensor ,
the pickup in the distributor does not work or is broken or
if the distributor is not turning (broken timing belt )
then
Mr ECM does not know it should generate an IGT signal or run the fuel pump or open the injector
because
Mr ECM would be thinking the engine is not turning
Edited by mwebb, Apr 24 2014, 10:41 PM.
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acedoggy
New Member
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Thanks for the chart I went yesterday and gave it a try electrical problems I am the worst at, as far as I can tell power is only going to one of the pins into the coil. It is the newer coil with the two wires at he top three on the bottom. When I turn the key just before it should crank the fuel pump doesn't come on as it should to prime the system. Power is going to the fuse for the fuel pump that is in the box beside the battery beside the two relays. Power is going from one of the 4 wires that go to the main relay. I've changed the box and the relays no luck this is turning out to be a nightmare. Any more ideas ? Please Thanks
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David95237


two wires in the main relay should have power, If i remember right.
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acedoggy
New Member
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It runs ! thanks to everyone for your help changed the sensor for the cam and may have been the ground on the harness by the fuse box in eng comp. Thank you
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