My 1990 corvette will not start when i turn key.starter doesnt doesnt crank but i jumped it and looks to be ok. My security light isnt on nor flashing.

I got the relay out of the god forsaken tiny space. Is there anyway to test them to see if that was my problem. I hope its not with a multi meter back up in there. I got the relay out of the god forsaken tiny space. Is there anyway to test them to see if that was my problem. I hope its not with a multi meter back up in there.

and thank you for your help this has been driving me crazy 2 weeks and thank you for your help this has been driving me crazy 2 weeks

The relay should be a 4 pin relay. Using a 12volt test light connected to a ground with the relay removed,there should be two terminals with a power supply. One constant and one with the key on. THe other two terminals are for a constant ground and supply to the starter solenoid which will also produce a ground. If you quickly jump one of the powers to the terminal that goes to the starter, the starter should work if wiring from relay to starter is ok. If younare not on the right terminal, it will spark and possibly blow a fuse as this will be the direct ground side. If you can see the wiring behind the relay,it will be the purple wire that goes to the starter and that one will be the one that you supply direct power to. If still nothing happens,it may be astarter motor problem. You can try tapping on the starter with a blunt object while holding the key in the start position. If the starter works or tries to work while doing this,suspect a bad starter motor. The relay should be a 4 pin relay. Using a 12volt test light connected to a ground with the relay removed,there should be two terminals with a power supply. One constant and one with the key on. THe other two terminals are for a constant ground and supply to the starter solenoid which will also produce a ground. If you quickly jump one of the powers to the terminal that goes to the starter, the starter should work if wiring from relay to starter is ok. If younare not on the right terminal, it will spark and possibly blow a fuse as this will be the direct ground side. If you can see the wiring behind the relay,it will be the purple wire that goes to the starter and that one will be the one that you supply direct power to. If still nothing happens,it may be astarter motor problem. You can try tapping on the starter with a blunt object while holding the key in the start position. If the starter works or tries to work while doing this,suspect a bad starter motor.

Ps.. Make sure you a dealing with a fully charged battery and not chasing your tail on this one. Ps.. Make sure you a dealing with a fully charged battery and not chasing your tail on this one.

Good call. Can the starter still be bad if I got it to crank from jumping that purple wire. Good call. Can the starter still be bad if I got it to crank from jumping that purple wire.

NO.... If the starter turns when you jump it.... it is good. This tells me there is no power to it from the relay on the purple wire. It is also possible there is a piece in the purple wire from the relay to the starter that is bad, although, unlikely. Also, try starting the vehicle with the gear shift in the neutral position ( if automatic transmission ) as the neutral safety switch could be an issue as well. NO.... If the starter turns when you jump it.... it is good. This tells me there is no power to it from the relay on the purple wire. It is also possible there is a piece in the purple wire from the relay to the starter that is bad, although, unlikely. Also, try starting the vehicle with the gear shift in the neutral position ( if automatic transmission ) as the neutral safety switch could be an issue as well.

If standard tranny, try crossing the clutch switch contacts ( make sure relay is plugged back in )to see if that helps If standard tranny, try crossing the clutch switch contacts ( make sure relay is plugged back in )to see if that helps

It is an automatic. I tried putting it in neutral to start before i took that relay out still nothing happens. Would this mean the neutral safety switch is good? It is an automatic. I tried putting it in neutral to start before i took that relay out still nothing happens. Would this mean the neutral safety switch is good?

Not necessarily... If it did start in neutral then you could consider this switch to be defective. I am sending a wiring diagram of the system to hopefully help track down the problem

Not necessarily... If it did start in neutral then you could consider this switch to be defective. I am sending a wiring diagram of the system to hopefully help track down the problem

Not necessarily.... If the vehicle started in neutral it would indicate the switch was defective. I am sending a wiring diagram of the starting system to hopefully help you sort things out

Not necessarily.... If the vehicle started in neutral it would indicate the switch was defective. I am sending a wiring diagram of the starting system to hopefully help you sort things out

Switched out the starter relay still nothing made sure I charged battery before I did this. Switched out the starter relay still nothing made sure I charged battery before I did this.

If I could jump starter then that should mean my grounds are good right? If I could jump starter then that should mean my grounds are good right?

Yes, If you can jump starter, battery power and grounds are ok. You need to determine if there are 2 power supplies at the relay. One constant and one with key in on position in order for the relay to operate. Yes, If you can jump starter, battery power and grounds are ok. You need to determine if there are 2 power supplies at the relay. One constant and one with key in on position in order for the relay to operate.

If key is in on position If key is in on position