1997 Cadillac STS

Tiny
CALVARA1
  • MEMBER
  • 1997 CADILLAC STS
Electrical problem
1997 Cadillac STS V8 Two Wheel Drive 120k miles

single father of 3 wish I could donate more sorry. Dash reading prob with theft system car may not start put in new battery car starts and shuts off about 3 seconds later. Have read several q and answers on this site one interesting solution had to do with 2 white wires in steering column. Please help single dad needs to get 2 little ones to and from school thank you and god bless.
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Monday, February 8th, 2010 AT 9:54 PM

3 Replies

Tiny
FACTORYJACK
  • EXPERT
It is a bit more difficult than it sounds. What you are likely to have is a failed ignition cylinder, the wires up near the rotating portion of the cylinder eventually give up. There are two ways to go about it. One is replace the cylinder with new keys, the original key value can be obtained by vin, or a tool called a VATS interrogator. The second option is to bridge the harness side of the connector(at the base of the column) with a resistor pack that is the same(or very close to) as they current key resistance value. What you are doing by this, is substituting the pellet in your key. The only pitfall to the second option, is the car can be started with anything that can rotate the cylinder. You could even place a new cylinder, connected with a key in it, under the dash to act as your bridge, and accomplish the same as the resistor pack.
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Monday, February 8th, 2010 AT 11:35 PM
Tiny
CALVARA1
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Well im having someone come on sat he said that it needs a new ig cylinder however I had 1 guy look at it today and he didnt do that I dont know if its because he doesnt want to go through the trouble or he doesnt know how. Now what he said is he thinks the computers shot and told me he would hate to see me waste my money on a new ig cylinder but to tell the other guy that there was a vats chip spliced inline. Can you tell me what you think this guy did and if the other guy has the right idea as far as a new ig cylinder as opposed to what this guy did underneath the dash. Car starts strong and then 3 or 4 seconds later it shuts down. Thank you and God Bless.
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Thursday, February 11th, 2010 AT 4:12 PM
Tiny
FACTORYJACK
  • EXPERT
I don't know what he could have done under the dash, and I am not familiar with a VATS chip. By someone saying the computer is shot, you have somewhere in the neighborhood of 15 computers on that vehicle. The ignition cylinder is a simple test. With the large connector at the base of the column disconnected. Place an ohmmeter across the two white wires that are in an orange conduit, on the column side. You should have open circuit. Insert your key, you should have resistance close to the pellet value. Rotate the cylinder through all ranges, off, run, start, and it should have the same resistance value at all times. If it cranks, fires, and then dies, it probably is not the cylinder. Press off and passenger warmer on your climate panel to enter diagnostics. Record all the codes that display, particularily PCM, and VTD codes. It should display all codes after a brief segment check.
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Friday, February 12th, 2010 AT 12:17 AM

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