Lean afr - MR2 Owners Club Message Board
 
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post #1 of 7 (permalink) Old July 21st, 2019, 10:59 Thread Starter
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Lean afr

New to club my car has lean afr no leaks .also if I put heater or lights one it makes it even leaner why ?
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post #2 of 7 (permalink) Old July 21st, 2019, 11:06
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It will help if you tell us what car you have, and then pose your question in the appropriate section.

This is all at idle, am I right? Do the lights and heater cause the idle to bump up? How about some numbers?
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post #3 of 7 (permalink) Old July 21st, 2019, 11:13 Thread Starter
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Well there 19.5 to 17 idle light throttle 15.9. Full boost 13.5
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post #4 of 7 (permalink) Old July 21st, 2019, 11:14 Thread Starter
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Lights on afrs go down as in lean !!.
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post #5 of 7 (permalink) Old July 21st, 2019, 11:16 Thread Starter
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New to the club so dont know how to post In the right place .my car is a mr2 rev2 turbo 1992
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post #6 of 7 (permalink) Old July 22nd, 2019, 09:22
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Quote:
Originally Posted by Lionel Piper View Post
Lights on afrs go down as in lean !!.
AFR going down would mean rich. Is this related to the idle bumping up?

If you scroll down the main forum menu, you will find "MKII 90-99 NA & TURBO" and there you might catch the eye of someone who actually knows about your car.
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post #7 of 7 (permalink) Old July 24th, 2019, 21:20
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The O2 sensor voltage is very low (750 milliamps), and it should go directly to the gauge, but it seems like turning on accessories causes a voltage change which affects your reading. Check your wiring to the gauge, or get rid of it.
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