in limp in mode, the engine runs: rich or lean; & ignition timing is ?

1987 FORD ESCORT
999,999 MILES
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NEMIR89
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hi i was wandering if somebody could please help me out understand how is the igniting timing affected when the vehicle is running in limp in mode
this is for studying purposes
i know limp in mode will run out of a pre-programed chip information and that it will run rich but how does that affect timing ?
Oct 10, 2012 at 11:46 PM
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ASEMASTER6371
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stays in base timing instead of advancing according to power needs.

Roy
Oct 11, 2012 at 12:54 AM
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NEMIR89
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so it'll run rich and, no timing advance. thanks
i have another quick question what is the map frequency (hz) at sea level and its voltage output value ?
Oct 11, 2012 at 1:03 AM