rich or lean

james87gt · 07-27-2002, 11:01 AM

i was told a long time ago that you can test for lean or rich conditions with a multimeter and you just hook it up to the o2 sensors but what should it read and is this even possible.

srv1 · 07-27-2002, 11:18 AM

this is true, but you have to know how to read an O2 sensors "real time". it should toggle from .5v above and below rapidly. highest should be about 1.0v meaning rich side. .01 is lean. your 87 doesnt have a data stream. Fords used Breakout boxes. meaning you cant get sensor data unless you backprobe the circuit or use and expensive breakout box. your year only throws out codes.

07-27-2002, 11:01 AM	#1
james87gt Registered Member Join Date: Jan 2002 Posts: 62	rich or lean i was told a long time ago that you can test for lean or rich conditions with a multimeter and you just hook it up to the o2 sensors but what should it read and is this even possible.

07-27-2002, 11:18 AM	#2
srv1 Get down..... Join Date: Apr 2001 Location: Room 103 Posts: 2,095	this is true, but you have to know how to read an O2 sensors "real time". it should toggle from .5v above and below rapidly. highest should be about 1.0v meaning rich side. .01 is lean. your 87 doesnt have a data stream. Fords used Breakout boxes. meaning you cant get sensor data unless you backprobe the circuit or use and expensive breakout box. your year only throws out codes. __________________ Cobra brakes are on! Finally..... ------------------------------------------------

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