macsfamily
New Member
- Joined
- Nov 8, 2012
Hello everyone! First post after lurking every day for quite some time. Looking for some advise with my issue. Below is my issue followed by the scanner data. I appreciate any help you may have!!
Car: 87 GN 62,000 miles
All items below completed in last month ( followed "spring cleaning" )
- Coil Pack
- Spark plugs ( NGK Copper )
- Plug wires
- Fuel filter
- Air filter ( OEM )
- Reset IAC and TPS
- Replaced all intake boots and clamps
- New PCV Valve w/ additional check valve
- Oil ( Royal Purple ) and filter ( Wix w/ chk valve )
- Stock fuel pump w/ racetronix hotwire installed
- Cleaned and ohmed all engine bay ground points
- New MAF ( OEM style ) and O2
- RJC power plate
- New adjustable Turbo actuator ( currently set to oem spec )
ISSUE: While driving with little to no boost, I am getting an erratic chk eng light for "O2 lean". It will also do this while at a stand still idling. Watching the scanner, it reads as O2 lean almost always unless I give it some throttle and let off. The car does not idle well and wants to stall out, especially when cold. Any ideas??
Scanner data at idle:
BLM 150
TPS .42v
RPM 975-1025
IAC 16-24v
O2 state LEAN
O2 V .29-.30
MAF 004 G/S
INT 150
CLOSED LOOP
CLNT TEMP 195
AIR FLOW 004 G/S
SPARK ADV 36 degrees
TCC off
Car: 87 GN 62,000 miles
All items below completed in last month ( followed "spring cleaning" )
- Coil Pack
- Spark plugs ( NGK Copper )
- Plug wires
- Fuel filter
- Air filter ( OEM )
- Reset IAC and TPS
- Replaced all intake boots and clamps
- New PCV Valve w/ additional check valve
- Oil ( Royal Purple ) and filter ( Wix w/ chk valve )
- Stock fuel pump w/ racetronix hotwire installed
- Cleaned and ohmed all engine bay ground points
- New MAF ( OEM style ) and O2
- RJC power plate
- New adjustable Turbo actuator ( currently set to oem spec )
ISSUE: While driving with little to no boost, I am getting an erratic chk eng light for "O2 lean". It will also do this while at a stand still idling. Watching the scanner, it reads as O2 lean almost always unless I give it some throttle and let off. The car does not idle well and wants to stall out, especially when cold. Any ideas??
Scanner data at idle:
BLM 150
TPS .42v
RPM 975-1025
IAC 16-24v
O2 state LEAN
O2 V .29-.30
MAF 004 G/S
INT 150
CLOSED LOOP
CLNT TEMP 195
AIR FLOW 004 G/S
SPARK ADV 36 degrees
TCC off