no power to starter - Team Camaro Tech
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post #1 of 8 (permalink) Old Feb 21st, 07, 05:00 PM Thread Starter
Julio
 
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Unhappy no power to starter

Hi, Am having a bit of a problem on my 1994 chevy camaro with a 3.4 V6. My car won't start. I have check the battery and the starter and they are both good. What I did discover was that the purple wire going to the starter has no power when I try to start it. So I check the neutral safety switch and that is getting power and power is coming out when I turn the key to start it. now my ignition key is the one with the little medal piece on the key. I was wondering could my ignition switch be bad or is it something else. Thank you in advance. 94camaro
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post #2 of 8 (permalink) Old Feb 22nd, 07, 06:35 PM
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Re: no power to starter

If your not getting power to the starter (via the purple wire) but see power at the neutral safety switch, then I'd be looking for an alarm system that is interrupting current flow in the purple wire. Try taking an ohm measurement between the starter solenoid end of the purple wire and the neutral saftey switch. Sounds like you'll find there is an open circuit. Does this car have an after market alarm system on it?

Dave
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post #3 of 8 (permalink) Old Feb 23rd, 07, 03:54 AM
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Re: no power to starter

Security light on? If so, then probably an ignition key tumbler problem, the unit you stick the key into on the column. See what happens by attempting to start, then wait 3-5 minutes, then try again. If car starts, then I would suggest the ign tumbler be replaced. If not, then problem is elsewhere, follow dnult's suggestion. Do you have a Haynes service manual?

If the VATS (Vehicle Anti-Theft System) does not recognize the key, it will not close the no-start relay and the starter will not engage.

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post #4 of 8 (permalink) Old Feb 23rd, 07, 10:08 AM
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Re: no power to starter

Quote:
Originally Posted by 94camaro View Post
Hi, Am having a bit of a problem on my 1994 chevy camaro with a 3.4 V6. My car won't start. I have check the battery and the starter and they are both good. What I did discover was that the purple wire going to the starter has no power when I try to start it. So I check the neutral safety switch and that is getting power and power is coming out when I turn the key to start it. now my ignition key is the one with the little medal piece on the key. I was wondering could my ignition switch be bad or is it something else. Thank you in advance. 94camaro
I know from experance, one time I tried to change out a radio on a 1994. When I went to remove the radio, the Camaro went into a lock and would not start. I don't know if that would help. But I have had it where the car locked itself down because I was changing out the radio. On some vehicles, if the thelf system is tampered with....they have to go to the dealership to unlock the thelf system.

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post #5 of 8 (permalink) Old Feb 23rd, 07, 10:20 AM
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Re: no power to starter

no car ever "has to go to the dealership" to get fixed.
a lot of the basic reasons this could happen might be in the owner's manual.

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
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post #6 of 8 (permalink) Old Feb 23rd, 07, 03:15 PM
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mike
 
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Re: no power to starter

vats interrupts the fuel i believe...i think it`ll be in the ign switch at the bottom of the column or possibly a relay, but you should take everetts advice and run down the schematic in haynes...dnults suggestion of the alarm is also a great point...

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post #7 of 8 (permalink) Old Mar 1st, 07, 04:04 PM Thread Starter
Julio
 
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Re: no power to starter

hello to all, sorry about taking so long to respond. well I did what Dave(dnult) said and I found the ignition switch thanks to haynes manual, so now I have power to the ignition switch and power coming out after that power goes to the theft deterrent relay and thats where the power doesn't come out that relay has four wires a yellow which is powered when i turn the key a brown wire that comes from the neutral safety and that has power coming to and the purple wire that goes to the starter but has no power coming out, also a small yellow and black wire the goes to the theft deterrent module( what the hell is a theft deterrent module and does anybody know where it is located????) oh I know it not the relay because the hatch relay and theft relay are the same relay and I switch relays and the theft relay work when I connect it to the hatch connector...help am stuck please
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post #8 of 8 (permalink) Old Mar 1st, 07, 06:29 PM
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Re: no power to starter

Ignition key have a resistor chip in it? The VATS module is located under neath or at the pass side toe board or kick panel.

If chip in key is not recognized by VATS module, then theft relay will not energize. There is a connector on column and two small gauge wires, white?, with key chip resistance to VATS module. If key is not read, usually because of key socket in tumbler, is not making contact with key. You should see with your meter the resistance value of the key chip. This key resistance value is compared inside VATS module and if a match is found, relay energizes, engine starts.

I think, yellow wire is relay power and yellow/black wire is power return. If you find ne resistnace from key socket, then you will have to have key tumbler changed. It requires steering wheel removal to change along with locking plate removal and turn signal removal and fishing of new wires from the same column connector at the bottom of the column.

But before you get the part, er, tumbler from any GM dealer, you need to show proof of ownership. Torx screwdriver is needed also. Study up from the Haynes manual. Tools to do the job can be bought from Harbor Freight for under $30. Patience is also needed.

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