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Hi,
I was working on peugeot 206 with 1.4 16v engine. Customer consern was long crank when engine is cold. I test it and it was fine, but after 2 minutes of running it could just die. And there was no problem at all with restarting engine again. I noticed that it has "hole" in gas pedal. When i WOT during idle, it hasitate and even die. Sometimes it could backfire thru intake mainifold. OBD scan data show nothing worry about fuel trims were good. I took it on a road test and at WOT under load first o2 senor was switching rich lean rich lean, like normal crusing situation. I tested fuel pressure it was good. I plugged evap and crankcase breather hoes in case of false air. And checked intake mainifold with smoke machine, all good. I am wondering is this o2 reading normal ?
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