This disconnects the circuit, so the Theft Deterrent Unit is not reading that the key is constantly in the ignition lock. 700 - kenda bearclaw HTRs, ITP Delta 7x12 wheels, 1 billet spacers, Warn VRX 35-S. To prevent damage to the Theft Deterrent Unit, just put the switch to the off position when the car won’t be used over a 10-12 hour period. The Theft Deterrent Unit will now read those new resistors and then send a message to the computer that it’s okay to start the car. Strip the ends of the white wires leading to the car’s computer.ĥ) Connect your new resistor circuit to the white wires. Cut the orange insulator, and you’ll find two small white wires. I also used electrical tape and heat shrink tubing to insulate the new resistor circuit.ģ) At one end of the resistors I included an interrupter switch, since this will mimic the key being inserted and removed from the ignition lock.Ĥ) Go under the dash on the driver’s side and find an orange insulator wire. Pre-owned Chevrolet Lumina models are available with a 3.8 L-liter gas engine or a 3.1 L-liter gas engine, with output up to 200 hp, depending on engine type. This system is controlled by the body control. In this case I used three 1K ohm resistors and one 10 ohm resistor. The security system on a 1999 Chevrolet Lumina is designed to protect the vehicle from theft and vandalism. The resistor on my key was 3.01K ohms or 3010 ohms.Ģ) Get some carbon-film 1/4 watt resistors and connect them together so they will be close to the same value as the resistor on the key. Instead of paying the hundreds of dollars it would take to change the ignition lock and get new keys, I went with the cheap method by splicing in another resistor.ġ) Measure ohms on the resistor at the key using a multi-meter.
The mechanism inside the ignition lock that reads the resistor chip on the key broke, but the ignition lock itself would still turn properly. The problem ended up being a bad ignition key lock. The ignition lock cylinder has a lot of wear… Thanks! Engine: 3.8-liter V-6, 200 horsepower at 5,200 rpm, 225 foot-pounds of torque at 4,000 rpm. I tried a spare key that is almost new – pellet is in good shape – but that didn’t work.Īny ideas on where to begin with this problem? I read you can add a resistor to the starting circuit and that will “trick” the ECU in thinking everything is okay. No luck with those – security light just keeps blinking when in the run position and engine will not crank.
I did a bit of research on the Web, and I tried all the simple toubleshooting techniques like turning the key to run, waiting 10 minutes and trying to start the car again disconnecting/connecting the battery cleaning the pellet on the key. I saw on the dash that the security light was flashing when the key was in the run position. When I came back from shopping, I tried to start the car and it would not crank. I turned the key again and wiggled it a bit and the key came out in the “off” position. Chevrolet Model: Lumina Body type: Sedan Doors: 4 doors Drivetrain: Front-Wheel Drive Engine: 160 hp 3. When I turned off the ignition key I noticed the key was stuck in the ignition lock. I parked my 1999 Chevrolet Lumina 3.1L in a store parking lot.
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