Questions & Answers for: Geo fuel trim

Question about 1990 Storm

O2 sensor. What is its function?

...calculates a fuel trim value to either lean the air fuel ratio or richen the air/fuel ratio. In a nutshell it is one of the sensors that helps the computer decided how much fuel to give to the

Question about 1990 Tracker

2 Answers

1990 geo.tracker runs good until it worms up

...fuel trim numbers. short term and long term trim should be near zero, positive numbers mean adding fuel and negitive numbers mean takeing fuel away. you could have a O2 sensor fixed lean and the fuel ...

Question about 1992 Metro

3 Answers

The throttle body injector goes full on and floods the engine as soon as it starts.

...as it starts. After sitting for a while, it runs for a couple seconds and then dies. Only sprays fuel when it's cranking - key on, no fuel spraying and one wire reads 12V and the other open. ...

Question about 1997 Metro

4 Answers

We have a 1997 geo metro the check engine light was on when we took it to deq we got the code p0141 we replaced both o2 sensors but the light is still on what else could it be

...fuel trim or MPG or , other things. good luck! and post engine size please. Trouble Code Conditions: P0141 B1S2 Engine speed over 2000 rpm for 2 minutes, ECT sensor more than 176?F, and the PCM ...