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help.car wont start!!!

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Old Dec 13, 2008 | 06:25 PM
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Default help.car wont start!!!

just got the motor and everything wired up car wont start!!
the car is a 68 camaro with an ls1 with turbo. motor is from a 99 camaro with a t56 and i am using all the wiring from the car. when i turn the key on the security light flashes and wont click or anything but i do hear the box with 2 plugs in it clicking i think it is vats but i dont know anything about it!! any help would be appreciated
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Old Dec 13, 2008 | 07:00 PM
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Check your ground. You need a large ground for the starter to work.

If it was VATS the car would turnover and run for a few seconds.
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Old Dec 14, 2008 | 01:59 PM
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its grounded good thanks
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Old Dec 14, 2008 | 06:07 PM
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Originally Posted by RIDINFILTHY
just got the motor and everything wired up car wont start!!
the car is a 68 camaro with an ls1 with turbo. motor is from a 99 camaro with a t56 and i am using all the wiring from the car. when i turn the key on the security light flashes and wont click or anything but i do hear the box with 2 plugs in it clicking i think it is vats but i dont know anything about it!! any help would be appreciated
If you have the "starter enable" relay in the harness, engine will not crank with VATS problem. Try bypassing the starter enable relay, or easier, get a remoter starter switch, hook it to battery and the solenoid connection, hit the button with the key on and see if it starts and runs for 3 seconds.
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Old Dec 14, 2008 | 07:28 PM
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yeah i have the complete harness, i will try what u said but i dont know if it will even fire but we will see thanks for the info
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Old Dec 17, 2008 | 06:08 PM
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i got the car to turn over but will not fire!! the security light is not on anymore but still wont fire any ideas?? thanks
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Old Dec 17, 2008 | 08:43 PM
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Use a noid light on the injector plugs and see if they're getting a pulse. Also make sure one side of the plug has power
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Old Dec 18, 2008 | 01:58 PM
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i pulled the plugs and they are bone dry so no pulse and i have no power at the coil pack
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Old Dec 18, 2008 | 06:00 PM
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I had a similar problem. Engine would turn over but not fire or get gas to the plugs. Here's what I found:

Well I finally got it cranked. I found this message by John (Speartech) in an earlier post -
"Also, when you check voltages, you need to check them DURING cranking, not just with the key on. It's very common for people to hook up to an ignition switch terminal that is hot with key on but dead during crank.".

I got to checking my Painless universal fuse panel and my old (55) GM ignition switch last night and I could not find a place to pick up a power lead when the ignition was in both positions. I called Painless first thing this morning and ask where I could pick up that power lead. They said that on the old gm iginition switches, you have to strap ign1 and ign2 together and send that (using their pink ignition lead) to the fuse panel which in turn feeds their pink wire (usually their coil wire) to the pink PCM input. Well I did that and it cranked right up and runs great so far.

The thread has several other items to check. It's over here: https://ls1tech.com/forums/conversio...-question.html

Good luck
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Old Dec 19, 2008 | 08:17 PM
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thanks found the problem it was actually a ground that i didnt see, but i found it and it cranked up after a few tries
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Old Dec 24, 2008 | 10:05 AM
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now i realized i have no fuel pressure, it primes and both fuel pumps come on but will not hold the pressure at the fuel rail any ideas??
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Old Dec 24, 2008 | 01:33 PM
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Originally Posted by RIDINFILTHY
now i realized i have no fuel pressure, it primes and both fuel pumps come on but will not hold the pressure at the fuel rail any ideas??
Is the fuel pump polarity correct? Would make fp run backwards and no pressure.

Does it build any pressure?
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Old Dec 24, 2008 | 04:12 PM
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it does build pressure but as soon as let go of key it will like drain back into tank or something..i will have to check the polarity, i am sure it is correct since it has a + and - but we will see.. the gauge only jumps to 20lbs or so
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