Mr2 Roadster, negative fuel trims.

[Schrodinger’s Box]

Do you think that it could be possilbe, that the fault you’ve found could have resulted in a contaminated cat. converter which is influencing the fuel trims via the post cat. O2 sensors.

But congratulation on finding the fault, I hope you go ahead and buy a Hantek 8Channel, I’ve never regretted bying mine although it sits in the tool cuppboard most of the time. I have used the square wave generator to track down wiring to find out which wire I’m dealing with when the colours change within the loom.

[KamiWolf93]

I’ll try unplugging the post cat sensor and see what it does, the oscilloscope is definitely on my list of tools. Thankyou for your help also, wiring looms seem like a nightmare of a fault when they go wrong!

[Author]

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