Fiat Maria SX 1.6 16v iaf 4ef ecu control - Lack of power up hill, lumpy idle intermittent, P0170Archived Message
Posted by tim bowkett on November 16, 2006, 1:39 pm
hi all got a fault with this car it has a lack of power on hills and lumpy at idle intermitantly.the car is a fiat marea 1600,16valve, running a iaw 4ef ecu,i have retreaved two fault codes, P0170 intermitant,and P0130 intermitant, gas readings are at idle co=0.02, hc=0, co2=14.64, o2=0.14 and lambda at 1.00, at fast idle 3000rpm i have got co=0.01, hc=10, co2=14.75, o2=0.67, and lambda at 1.03, in live data i have front o2 sensor switching correctly,but rear sensor switching between 700mv and 800mv, have fitted new coil due to insulation crack,spark energy earthing through securring bolt,the fault is still present,i have not been able to duplicate the fault whilst here with me so can only describe as customer tells me,the fault has a irregular occurance sometimes hot sometimes cold,can drive fine for a few days,could this fault be a melted/ damaged cat due to unburnt fuel,plese any ideas welcomed