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Topic: 1990 L98 TPI runs rich

in Forum: C4 Engines

Re: 1990 L98 TPI runs rich

Posted: 4/4/18 10:21pm Message 11 of 13
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Mission Viejo, CA - USA
Joined: 3/18/2015
Posts: 74
Vette(s): Yellow '84 Coupe
Raptor003 said:

Most O2 sensors ideally should read 450ma when fuel/air mixture is correct. 800ma would show a rich condition.

I have a Polo Green 94 as well and it runs better when the O2 reads a little higher( 550-600ma).


That should be milliVOLTS, not milliAMPS.
http://www.google.com/search?q=testing+o2+sensor+with+multimeter&ie=utf-8&oe=utf-8&client=firefox-b#kpvalbx=1


Wink



|UPDATED|4/4/2018 10:21:43 PM (AZT)|/UPDATED|



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Re: 1990 L98 TPI runs rich

Posted: 4/18/18 12:18pm Message 12 of 13
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beaufort, SC - USA
Joined: 9/1/2009
Posts: 39
Vette(s): 1990 Turquoise Corvette (his) & 1990 Turquoise Corvette (hers)indy festiville car for sale
Go for a 3 wire o2 sensor,it’s. Heated sensor and gives a more accurate fuel reading for the computer.My Vette also was running rich and this was recommend by TPIS tech.You will need to find a 12volt hot with the key on voltage,it even improved starting and mileage


Re: 1990 L98 TPI runs rich

Posted: 4/18/18 12:19pm Message 13 of 13
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beaufort, SC - USA
Joined: 9/1/2009
Posts: 39
Vette(s): 1990 Turquoise Corvette (his) & 1990 Turquoise Corvette (hers)indy festiville car for sale
Go for a 3 wire o2 sensor,it’s. Heated sensor and gives a more accurate fuel reading for the computer.My Vette also was running rich and this was recommend by TPIS tech.You will need to find a 12volt hot with the key on voltage,it even improved starting and mileage


in Forum: C4 Engines


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