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Agree an intake air leak is most likely. A failed MAF is also possible as the car is running lean. Clogged injectors are possible but unlikely affecting both banks.
TS guide for 2002 model 986:
DME 7.2 (2000-2002 Boxsters)
P-Code Bank RPM Range Reason Look for:
P1128 1 Idle Engine is running very lean and the fuel adaptation has
pegged its rich correction.
Intake/Exhaust system leaks; MAF not performing correctly; fuel
delivery components cannot deliver enough fuel.
P1130 2 Idle Engine is running very lean and the fuel adaptation has
pegged its rich correction.
Intake/Exhaust system leaks; MAF not performing correctly; fuel
delivery components cannot deliver enough fuel.
P1126 1 Lower Load
(Low RPMs)
Engine is running very lean and the fuel adaptation has
pegged its rich correction.
Intake/Exhaust system leaks; MAF not performing correctly; fuel
delivery components cannot deliver enough fuel.
P1133 2 Lower Load
(Low RPMs)
Engine is running very lean and the fuel adaptation has
pegged its rich correction.
Intake/Exhaust system leaks; MAF not performing correctly; fuel
delivery components cannot deliver enough fuel.
P1125 1 Upper Load
(High RPMs)
Engine is running very lean and the fuel adaptation has
pegged its rich correction.
Intake/Exhaust system leaks; MAF not performing correctly; fuel
delivery components cannot deliver enough fuel.
P1132 2 Upper Load
(High RPMs)
Engine is running very lean and the fuel adaptation has
pegged its rich correction.
Intake/Exhaust system leaks; MAF not performing correctly; fuel
delivery components cannot deliver enough fuel.
__________________
2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
Last edited by Topless; 06-26-2016 at 12:56 PM.
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