Alarm chip, will not start?

1994 DODGE DAKOTA
210,000 MILES • 5.2L • V8 • 2WD • MANUAL
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MIKE LOCK
  • MEMBER
  • 5 POSTS
My alarm is not an electronic key fob it's the old chip that plugs in under the steering wheel. I don't have power windows or power door locks; do I still do same sequence on resetting the alarm as you described in responses before this one? any help will do I've been struggling for past 3 months. trying to figure out why my truck won't start. thanks
Feb 22, 2024 at 10:29 AM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Hi,

To the best of my knowledge, they didn't use an immobilizer in this model year. Also, you mentioned the sequence before this one. Which one are you referring to?

Let me know what is happening. for example, does the starter engage but the engine fails to run or does nothing happen when you try starting it?

Let me know.

Joe

Feb 22, 2024 at 12:38 PM
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MIKE LOCK
  • MEMBER
  • 5 POSTS
Both, sometimes it starts I'll be driving 5 miles down the road, and it shuts off and won't start again for hours. sometimes it will be weeks before it starts.
Feb 22, 2024 at 2:44 PM
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STEVE W.
  • Experienced Mechanic
  • 15,306 POSTS
Okay, then this isn't a factory system as you stated in your other post. The OE system used at the time used the key and a remote control that locked and unlocked the doors and would only sound the horn. Anything that uses a plug-in device would be something that a dealer or someone else added after the vehicle was built. There should be at least a manufacturers name on the socket, but you may need to remove the lower dash trim panel to find where they placed the actual module. From there it will usually have the model number on it, then you look that up and get the install directions or look at the wiring to match up the colors that they cut and added this device. The few of these I've seen generally cut the circuits to the ignition, fuel pump and starter. Then it depends on the actual unit, some the "chip" is the actual bridge item, it completes the circuits that were cut. Others use a version of the anti-theft tags used in stores, the device powers up, reads the tag and closes relays or transistors to complete the circuits. Take a picture of the chip you have and the socket and post them on here. Then if possible you may need to remove the lower trim panel to find the module and remove it. I doubt you can get any replacement parts for it as these type units fell out of use fairly quickly when manufacturers added the OE systems to everything.

Feb 22, 2024 at 3:05 PM
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