No crank, l when i turn key
#1
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Car: 89 Iroc
Engine: 388CI Paxton supercharger
Transmission: 700R4
Axle/Gears: 4.10
No crank, l when i turn key
Hey everyone, I did a stupid thing and hope you can help. I have an 89 iroc with a 383, new holley computer. it was running rough like there was interference coming from somewhere. So i unplugged the stock computer to see if it would start without that connected. No power at all while turning the key. So i plugged the stock computer back in and i still have no power when turning the key. I checked the connectors for bent or damaged pins and they all look fine. Then i realized i never disconnected the battery when pulling and reconnecting the plugs to the stock computer. I know stupid!!!! Is there any known fuses that i could have blown while doing this?? Any help would be greatly appreciated
Peter
Peter
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SbFormula (09-24-2023)
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Car: 89 Iroc
Engine: 388CI Paxton supercharger
Transmission: 700R4
Axle/Gears: 4.10
Re: No crank, l when i turn key
Lights work, No power to crank when i turn the key forward.
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Car: 89 Iroc
Engine: 388CI Paxton supercharger
Transmission: 700R4
Axle/Gears: 4.10
Re: No crank, l when i turn key
I don't know what that is, So no i haven't.
#7
Re: No crank, l when i turn key
Regarding the first question, while it is always advisable to disconnect the battery before the ECM, not doing so does not necessarily result in damage to the ECM. Chances are the ECM was not damaged at all.
Second, when the key cylinder is turned forward to crank, what happens to the temperature gauge and warning indicator lamps? If they do not operate (bulb test mode) there may be an issue with the ignition switch and/or its adjustment. One possibility is that the ignition switch is not being actuated fully. The key cylinder connects to the ignition switch via a linkage rod. If the IROC has a tilt steering column there are additional components in the actuator system, and some of those are more prone to wear (die cast material). To minimize any slack in the linkage with a tilt column it may help to position the steering wheel in its lowest position before turning the key cylinder.
Second, when the key cylinder is turned forward to crank, what happens to the temperature gauge and warning indicator lamps? If they do not operate (bulb test mode) there may be an issue with the ignition switch and/or its adjustment. One possibility is that the ignition switch is not being actuated fully. The key cylinder connects to the ignition switch via a linkage rod. If the IROC has a tilt steering column there are additional components in the actuator system, and some of those are more prone to wear (die cast material). To minimize any slack in the linkage with a tilt column it may help to position the steering wheel in its lowest position before turning the key cylinder.
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#8
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Car: 89 Iroc
Engine: 388CI Paxton supercharger
Transmission: 700R4
Axle/Gears: 4.10
Re: No crank, l when i turn key
I bypassed the starter enable relay and she started right up.. Thank you. Now my question is what is my best path forward from here? How do i fix this issue? is it as simple as connecting those 2 wires together permanently? Is there a better, more professional way to fix it?
Thanks,
Pete
Thanks,
Pete
#9
Re: No crank, l when i turn key
It would be best to determine whether the start relay has failed contacts or is not receiving power to the coil. There could be a problem with the neutral safety/clutch safety switch, VATS, ECM connections, or other wiring maladies.
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chazman (09-22-2023)
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Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: No crank, l when i turn key
Is there anything that would keep the starter enable relay from working, besides the VATS?
#13
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Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
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Axle/Gears: BW 3.45
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Car: 1989 Chevy Camaro
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Transmission: 4L80E
Axle/Gears: 3.73
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