1992 Oldsmobile Toronado 1992 Toronado dies after 20 minute

Tiny
TIM MONGE
  • MEMBER
  • 1992 OLDSMOBILE TORONADO
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 170,000 MILES
My 1992 Toronado Trofeo dies after it has been running for about 20 to 30 minutes. If I let it sit for 30 minutes it will start but die again shortly there after. I get a code 17 (Spark Refernce Signal). I have replaced the Ignition module, the PCM, the Fuel pump and fuel regulator. I have also replaced the Cam sensor. I have checked wiring harnesses for ware but have not inspected them closely. I did connect a dual trace scope to the ignition module inputs and outputs and I can see that I loose the fuel enable signal when the car dies. I do get pulses from the Cam and Crank sensors when cranking the engine during a no start condition.

Can you provide an answer to this problem before I replace anything else.
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Thursday, August 26th, 2010 AT 11:38 AM

1 Reply

Tiny
HMAC300
  • EXPERT
After looking at the wiring schematic, it seems like you might have a ground problem. The ground is by the left axle on the engine there are quite a few wires going to it and it's probably a stud easily found. It's probably losing ground due to getting heated up as you run for a longer period of time. Other than that it's got to be a connection problem.
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Monday, November 1st, 2010 AT 9:19 PM

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