macsfamily
New Member
- Joined
- Nov 8, 2012
- Messages
- 4
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