Year of Manufacture *: 2000
Engine Size and Code *: 1.9
( Optional ) ECU Type: MS-42
( Optional ) Scanner Used: Autologic
( Optional) Fault Codes: P0170 system lean
Smoked intake no leaks detected. snapping throttle felt like slight misfire and slightly flat,
so Scoped MAF, TPS and both O2 sensors
At WOT fault came clear....
Old MAF signal in green peaks at around 3.6v@ WOT.
O2 sensors showing lean mixture across WOT
Fitted New MAF and done same test. Massive improvement MAF peaks around 4.1v@ WOT, and O2 sensor reporting nice rich mixture across WOT.No misfiring and more responsive on snap throttle
Darren
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