Need help for 2001 Formula LS1

[sasquatch094]

Im having a problem on my 2001 formula.. Its not getting any spark and no injector voltage. We replaced the crank sensor and didnt help it. Has good fuel pressure. Clean spark plugs. Itll crank over but wont run. Need some help...

[6-Speeder]

Well according to my Haynes manual: under engine rotates but will not start it states:

1. Fuel tank empty (if only )
2. Battery Discharged (engine rotates slowly). Check the operation of the electrical components as described in the previous section.
3. Battery Terminal connections loose or corroded.
4. Fuel not reaching the fuel injectors. Check for clogged fuel filter or lines and defective fuel pump. Also make sure the tank vent lines arnt clogged.
5. Faulty distributor (not applicable)
6. Low cylinder compression
7. Water in fuel. Drain tank and fill with new fuel
8. Dirty of clogged fuel injectors.
9. Wet or damaged ignition components
10. Worn, faulty or incorrectly gapped spark plugs
11. Broken, loose or disconnected wires at ignition coils or faulty coils.
12. Broken loose or disconnected wires in ignition circuit
13. Timing chain failure or wear affecting valve timing.

Hope this helps you out, if u need something else i can look it up for ya or just buy one. These books are awesome. Good luck

[180ls1]

Well according to my Haynes manual: under engine rotates but will not start it states:

1. Fuel tank empty (if only )
2. Battery Discharged (engine rotates slowly). Check the operation of the electrical components as described in the previous section.
3. Battery Terminal connections loose or corroded.
4. Fuel not reaching the fuel injectors. Check for clogged fuel filter or lines and defective fuel pump. Also make sure the tank vent lines arnt clogged.
5. Faulty distributor (not applicable)
6. Low cylinder compression
7. Water in fuel. Drain tank and fill with new fuel
8. Dirty of clogged fuel injectors.
9. Wet or damaged ignition components
10. Worn, faulty or incorrectly gapped spark plugs
11. Broken, loose or disconnected wires at ignition coils or faulty coils.
12. Broken loose or disconnected wires in ignition circuit
13. Timing chain failure or wear affecting valve timing.

Hope this helps you out, if u need something else i can look it up for ya or just buy one. These books are awesome. Good luck

+1 for that
and you just have to trace the voltage as far back as you can untill you find the problem i am sure you know that maybe someone will have better advice or hopefully someone had this same problem and can help you out.

[sasquatch094]

yeah ive tried all those remidies up there and still nothing.. i cant find out what the hell it is. i was going to change the computer out of a 2000 trans am.. but their different.. so that doesnt help me.. i have a 2000 trans am too but idk ill keep trying stuff and you guys can keep trying to help me out.. thanks alot

[sasquatch094]

welll i found out what it was.. a fan relay.. it fired right up.. thanks for everyones help..

[Street Fighter]

welll i found out what it was.. a fan relay.. it fired right up.. thanks for everyones help..

You mean to tell me a fan relay would keep these cars from starting? I never would have thought of that.How did you come to find out this was the problem?

[JayTA98]

Interesting I'll have to remove my fan relay and try to crank it. Just in case that I need to know that because it doesn't make any sense to me that a fan relay will stop the car from starting...