Question about 1987 Oldsmobile Toronado

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1987 dashboard flashes on and off

I have a 1987 oldsmobile toronado and my dash blinks on and off
i can't find the problem, any suggestions?

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Remove it and send it to Model Electronics to have it checked out.

Posted on May 22, 2009

  • x x Jan 06, 2011

    That instrument cluster was notorious for that problem due to the way the parts were surface mounted on the circuit board and they were prone to being affected by weather extremes and vibration. The problem could also be caused by the BCM (body control module), any loss of the data stream which involves the climate control, ECM, chime control module, IPC (your cluster in question), the radio and the connector by the brake pedal and possibly some other electronic components I can't recall or that may be unique to your vehicle based on options. Regarding the BCM, it has an EPROM and an EEPROM both of which are no longer available. If there is a problem with those internal IC's that's one possible source of your problem, but also the Central Power Supply located above the gas pedal could cause your problem. Regarding the data lines, this car uses a redundant data circuit and what that means is that there are two sources of data connections available to each component -originating at the BCM and returning to the BCM, with data at two connections per device. Loose or poor ground connections are also a concern as are shorts to ground of the data lines or CPS voltage or other shorts to ground. Your IPC may also simply be defective (old solder joints etc). If you're a do-it-yourselfer, I recommend purchasing the service manual readily available on Ebay. It has a green cover with a picture of a Toronado in front of a service center. That book is invaluable in learning everything possible about your car. If your IPC stays on long enough to get into diagnostic mode (through your climate control), it will help you diagnose pretty much all electrical problems in that car. I completely R

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I have somewhat of the same problem i have a 1987 oldsmobile tornado trofeo and sometimes when i am driving or parked the dash and everything will work fine but then where the tach bar should be Electrical Problem pops up and the climate control goes blank and it starts blowing at 75 degress out of the front defrost sometimes i can tap on the dash to get the lights to comeback on and it wont mess up but it does it almost everytime i drive it its only got 106000 on it and me and my dad just replace the BCM it didnt really help but i got error codes b335and B552 tom tom please help if you have any suggestions

Posted on Nov 14, 2011

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