Effdup injection wires or bad module? Help!
09-13-2007, 12:59 PM
#1
Three Wheelin'
Thread Starter
Effdup injection wires or bad module? Help!
Where do I look now? This '91 $4 sat for 3 1/2 years. We drained gas, new gas filter, changed oil & filter, new battery, relays etc. It started and died shortly after. Main pump is ok, but in-tank pump (just like yours, Andrew O.) was bad. Replaced and now will not start at all. It cranks well and we backflushed the fuel pump, verified relays (Not the EZK one, though) and checked grounds. Had power, had fuel, but no ignition. After doing testing what we find is that power is going to both sides of the injectors wires! Power is feeding back into the ground side. Whats up with that? Can anyone help point me in the right direction(s) quickly? I need to get this once fine automobile back on the road. Thanks Gang!
Paul Barrera
'91$4 A/T, Black awaiting ignition and all the parts are here so that I may replace all belts,hoses, fuel and vacuum lines, air filter, a/t trans filter and shift spring update, motor mounts, oil pan gasket, tie-rods, front wheel bearings,new cross drilled rotors, pads, s/s brake lines, shocks, x-pipe and a whole lot of other junk, stuff & things before It goes to the body shop for unfortunate but neccessary bump & full respray, rear seat and rear A/C delete, rear wing "whacked", GTS mirrors, and new interior leather.
Paul Barrera
'91$4 A/T, Black awaiting ignition and all the parts are here so that I may replace all belts,hoses, fuel and vacuum lines, air filter, a/t trans filter and shift spring update, motor mounts, oil pan gasket, tie-rods, front wheel bearings,new cross drilled rotors, pads, s/s brake lines, shocks, x-pipe and a whole lot of other junk, stuff & things before It goes to the body shop for unfortunate but neccessary bump & full respray, rear seat and rear A/C delete, rear wing "whacked", GTS mirrors, and new interior leather.
Last edited by Ninespub; 09-13-2007 at 02:33 PM. Reason: spelling
09-13-2007, 01:17 PM
#2
Rennlist Member
You will find +12v on all the igntion wires, because one side is grounded when they are energised.
Change the EZK relay, or swap it for a known good one. Focus on getting igntion. The LH ECU will not energise the fuel pump or fire the injectors until you have ther ignition working again.
Change the EZK relay, or swap it for a known good one. Focus on getting igntion. The LH ECU will not energise the fuel pump or fire the injectors until you have ther ignition working again.
09-13-2007, 02:14 PM
#3
Supercharged
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Paul-
Think "relay, relay, realy!" If swapping out the EZK relay doesn't do it for you, another culprit could be the crank position sensor which sits atop the upper bellhousing under the air filter assembly. If rodents got in there and munched on the wires, this would prevent you from having ignition. Let me know if I can help.
Think "relay, relay, realy!" If swapping out the EZK relay doesn't do it for you, another culprit could be the crank position sensor which sits atop the upper bellhousing under the air filter assembly. If rodents got in there and munched on the wires, this would prevent you from having ignition. Let me know if I can help.