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Re: TBI wont go to closed loop
Get an ALDL cable and do some live data scanning. It will tell you if it is in open or closed and you should be able to see what is preventing closed loop. Remember that you will NEVER have closed loop at idle. I have also never heard of having the check engine light flash for open vs closed loop.
Get a cable from here -
http://aldlcable.com/
They also supply a CD with a couple dozen different free programs for live monitoring and data logging on OBD1 systems. I found sensors that were bad that weren't triggering a CEL using this.
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87 R30 CC Dually, TBI 454, NV4500, zero rust barn find
87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4
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