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Discussion Starter #1
cars a cav on a 93 l plate.
engines a c20xe (red top)
problem is fitted new lambda sensor and cars running fine.
getting an intermitent management light that seems to make no difference to cars running. done paper clip test and theres no fault stored. any known problems that can cause this. thanks
 

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All I can suggest is earths.
I had an L plate cav sri, the bulb was pulled when I got it, and I pulled out the one I put in as the light would be on all the time, with no codes.
My brother has the car now, and after changing the engine it was still on.
Had cam sensor, air intake temp sensor and knock sensor faults one after the other recently. Fixed all these, and then earths on block and inner wing. Light is now working properly.
 
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