91 LS400 Start won't run
#1
Driver School Candidate
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91 LS400 Start won't run
Anybody have an idea on what could cause my 91 LS400 to start but not run? It is getting fuel, fire, and injection pulse. I was told that a code 52 came up but that wouldn't cause it. The security light is not blinking either. Any advice would be appreciated. Thanks.
#3
Driver School Candidate
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#4
Open the data port on the engine and inside the cover shows the pin outs. Use something like a bent open paper clip to jump from B+ to the Fp terminal. When the ignition is turned on the fuel pump should run. Its by passing the fuel pump resistor and relay circuits. I suppose in a pinch a car could be driven home doing that. The stiff wire ends of a paper clip work nice to plug into those small terminal plugs.
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ZGagnon
LS - 1st and 2nd Gen (1990-2000)
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05-23-14 08:12 PM