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Help! It just won't start!

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Old Sep 3, 2011 | 01:59 PM
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Originally Posted by RRPVETTE
the battery is fine, i replaced the battery because i had a bad feeling about it when i bought it. EVERY electrical component works, except obviously it won't start. headlights, interior lights, radio, instrument panel, fan, seats, a/c, doors, windows, mirrors, rear hatch, i mean everything works. and just to be clear i did not literally mean i sat there holding the key in crank for a whole minute. i'm not not retarded i've been around cars and torn them apart and put em back together all my life and i know better than to hold it for more than a few seconds...and oh yeah as i said earlier i have no fsm or anything, but i am looking in to it so thanks for the steps from there
how can the a/c work if the engine doesn't start? (just joking!)

I get the point. the battery has sufficient power!

the reader has NO idea what experience anyone has. I was just following the info you supplied, to suggest that it is possible that the solenoid and or starter has overheated.
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Old Sep 3, 2011 | 02:15 PM
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Originally Posted by stoydido
how can the a/c work if the engine doesn't start? (just joking!)

I get the point. the battery has sufficient power!

the reader has NO idea what experience anyone has. I was just following the info you supplied, to suggest that it is possible that the solenoid and or starter has overheated.
yeah i know, but you're the second person to seem to tak me saying i attempted to start it for a minute as i sat there for an entire minute with the key turned. so i figured i would clear things up
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Old Sep 3, 2011 | 02:33 PM
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No starter sound at all?
Close door, put key in, turn key to "ON". If "Security" light is lit or flashing, it's vats. I see that you used BOTH keys. It might be dealership time. Your ignition might be going bad.

If no "security" light, then it's your starter or positive CABLE. it can go bad. Check connections between battery and starter. If all good, it will probably be the starter.
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Old Sep 3, 2011 | 02:35 PM
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Originally Posted by RRPVETTE
yeah i did, i plan on doing all of that once i get back in town. out of curiosity, do you know of any cheap places to get a resistor? also what is the more reputable place to get the ignition switch with keys from? what is the "upgraded" version of ignition switches? and finally how do i find out the resistor value of my key? i know that's a lot of questions but as you can tell i'm relatively new to the corvette world
radio shack, 15 cents a piece use a multi meter and read the resistance on both sides of the pellet on the key.
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Old Sep 3, 2011 | 03:10 PM
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Originally Posted by RRPVETTE
yeah the security light will flash wheni open the door, then if i'm not mistaken it stays on when the key is in, i'll double check when i get back on monday but yeahi'm almost positive that it's a steady security light. also i tried the whole neutral thing and it didnt work but maybe that's because of VATS? where is the safety switch at?
Well, with the security light on, you have a VATS issue. On my car, one of the VATS wires broke where it comes out of the ignition cylinder, all these years of wear and tear and it finally broke. With this wire broken, the CCM cant read the resistor in your key (circuit is open). Pic below may help

Like oldalaskaman said, measure the resistance of the key pellet and find an equivalent resistance resistor at Radio Shack or similar. You will have to remove the drivers hush panel, the VATS circuit is the orange +white wires I believe. Just splice the resistor in where the connector to the column is.

Safety switch is mounted on the side of the shifter - you'll have to take the console apart to get to it. But thats not yer problem.

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Old Sep 3, 2011 | 05:35 PM
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Originally Posted by Gear Jammer
Well, with the security light on, you have a VATS issue. On my car, one of the VATS wires broke where it comes out of the ignition cylinder, all these years of wear and tear and it finally broke. With this wire broken, the CCM cant read the resistor in your key (circuit is open). Pic below may help

Like oldalaskaman said, measure the resistance of the key pellet and find an equivalent resistance resistor at Radio Shack or similar. You will have to remove the drivers hush panel, the VATS circuit is the orange +white wires I believe. Just splice the resistor in where the connector to the column is.

Safety switch is mounted on the side of the shifter - you'll have to take the console apart to get to it. But thats not yer problem.

is that just the new cylinder on top and yours on bottom? and is it orange and whit or yellow and white , i would just like to know before i start splicing wires
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Old Sep 3, 2011 | 05:43 PM
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different colors different years, orange or yellow they go to the same place
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Old Sep 3, 2011 | 05:56 PM
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on my 91, they're ORANGE.

Also, be very careful - (at least for 91) the YELLOW sheathing is the airbag. The airbag harness should have warning tags on it. It also is routed towards the outside of the car, whereas the VATS harness is routed from the column to the centerline of the car - towards the CCM in the console.
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Old Sep 3, 2011 | 06:01 PM
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Originally Posted by Gear Jammer
on my 91, they're ORANGE.

Also, be very careful - (at least for 91) the YELLOW sheathing is the airbag. The airbag harness should have warning tags on it. It also is routed towards the outside of the car, whereas the VATS harness is routed from the column to the centerline of the car - towards the CCM in the console.
yeah, ok. i've seen that wire, the one that has a tag that says SIR on it and warning signs. I'm going to check that out as soon as i get back
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Old Sep 3, 2011 | 06:44 PM
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Originally Posted by RRPVETTE
about the keys, i'm not sure if it helps but i have the original punch outs from the key ring holes. someone told me that it will help to identify the resistance of the pellet. is that true?
Yes (just looked at mine) the punchout should have a number between 1 and 15 representing the key code you need. From the key code and the resistance table you will know what size resistor to buy.

http://www.thirdgen.org/vats_passkey_system

By the way, if you buy a new ignition lock you will get new keys with a new resistor value & may have to go through some extra steps to get your ecm to recognize them.
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Old Sep 3, 2011 | 06:51 PM
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Originally Posted by navy_vette
No starter sound at all?
Close door, put key in, turn key to "ON". If "Security" light is lit or flashing, it's vats. I see that you used BOTH keys. It might be dealership time. Your ignition might be going bad.

If no "security" light, then it's your starter or positive CABLE. it can go bad. Check connections between battery and starter. If all good, it will probably be the starter.
Actually, there are several switches that can fail and prevent cranking---the ignition switch, the start enable relay (which may be being turned off by a VATS violation), the clutch start switch in a manual or trasmission position switch in an auto. With a voltmeter you can check whether battery voltage is getting past each of these choke points and identify the problem location.
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Old Sep 3, 2011 | 07:12 PM
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Originally Posted by 3D87C4
By the way, if you buy a new ignition lock you will get new keys with a new resistor value & may have to go through some extra steps to get your ecm to recognize them.
Good point - The lock cylinder I bought just had a regular key (no pellet). I had a locksmith re-key the cylinder to my existing ingnition keys.
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Old Oct 1, 2011 | 04:36 PM
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Ok well new development, I haven't been able to do much with it lately bc of work but I went out to check all the things that were mentioned and now absolutely no electricity is flowing at all. Now I am at a complete loss, I can't run a diagnostics, I can't drive it to a shop, I don't know what to do
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Old Oct 1, 2011 | 04:54 PM
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Originally Posted by RRPVETTE
Ok well new development, I haven't been able to do much with it lately bc of work but I went out to check all the things that were mentioned and now absolutely no electricity is flowing at all. Now I am at a complete loss, I can't run a diagnostics, I can't drive it to a shop, I don't know what to do


My guess would be a free AAA tow to a shop. If you are not able to troubleshoot the correct way chances are you will spend for unnecessary parts. JMHO
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Old Oct 1, 2011 | 05:21 PM
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Originally Posted by RRPVETTE
Ok well new development, I haven't been able to do much with it lately bc of work but I went out to check all the things that were mentioned and now absolutely no electricity is flowing at all. Now I am at a complete loss, I can't run a diagnostics, I can't drive it to a shop, I don't know what to do
way back, someone, not I, said to clean and tighten battery cables. "no electricity at all" narrows it down somewhat.
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Old Oct 1, 2011 | 07:15 PM
  #36  
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Is the battery drained?
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Old Oct 1, 2011 | 07:33 PM
  #37  
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What number was on the key blank punch outs. That will tell you what resistors to get at Radio Shack. Use this chart to help. Key blanks numbered from 1 to 15. Yours should be one of those numbers.

This chart is for any GM product, Buick, Cadillac, Oldsombile, Chevrolet, and Pontiac that has a VATS key (single or double-sided.)

VATS # (K)OHMS (Set your meter to the 20k ohm setting)

1———— 0.402
2———— 0.523
3———— 0.681
4————-0.887
5————-1.130
6————-1.470
7————-1.870
8————-2.370
9————-3.010
10————3.740
11————4.750
12————6.040
13————7.500
14————9.530
15————11.801
When you get the number just compare it to the chart above. All tolerances will be 2% so all you have to do is get close. Give me the number off the key punch out and I'll give you a Radio shack shopping list. Be prepared to spend about $2.00.

After I give you the resistors you'll need go under the dash panel and find that orange wire with two wires inside it. You're going to cut it and splice the resistors into the wires that do not go to the steering column.

Once you do that it will start if it's VATS related...and I think it is. Check your PM's. Good luck.
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Old Oct 10, 2011 | 10:54 AM
  #38  
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Originally Posted by navy_vette
No starter sound at all?
Close door, put key in, turn key to "ON". If "Security" light is lit or flashing, it's vats. I see that you used BOTH keys. It might be dealership time. Your ignition might be going bad.

If no "security" light, then it's your starter or positive CABLE. it can go bad. Check connections between battery and starter. If all good, it will probably be the starter.
If there is a steady security it's a vats problem...
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Old Mar 2, 2012 | 08:18 AM
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Haven't had Internet in a while, sorry guys. The VATS system was completely fried I just had it bypassed
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Old Mar 9, 2012 | 01:59 PM
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Need an update
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