untchbl88

i got a code 45, which is oxygen sensor rich. does anyone know what i should do now? does this mean replace the oxygen sensor, or should i look else where. any help would be greatly appreciated

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irocbsa

Code 45 most likely means your O2 sensor is bad. It either got contaminated with silicon, carbon, etc. or it was just old and failed. Go to the GM dealer and pick up and 02 sensor and then go to a generic parts store and get an O2 sensor socket. The sensor is located on the passenger side (??? may be drivers side, haven't looked in a while) exhaust manifold directly behind the engine block. It will take some muscle to break it loose. Plug up the new one, screw it back in and go on your way. If you still get the 45 then you have a problem with the wiring or the ECM. If you still get the code post here and we'll send you down the right road.

BSA

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"If they do not run, Then they will die." - Stonewall Jackson
#3
'87 IROC, 355 TPI, Converted to SD, 700R4, B&M Megashifter, 3.42, Trick Flow Twisted Wedge Heads, Edelbrock Intake, Accel Runners, Comp Cam, Crane Gold rockers, Lucas 23# injectors, Edelbrock headers, Flowmaster 3'' exhaust, Mallory Ignition, Transgo Performance Shift Kit, Corvette Servo, 2,000 Stall Torque Converter

irocbsa

Of course the 45 could also mean that the O2 sensor is functioning properly and is seeing a rich condition in the fuel air mixture. This could lead to a whole host of other problems. The sensor will eventually fail if the mixture is indeed too rich. Good luck.
BSA

untchbl88

thanks iroc, i will get on that right after work and let you know something tomorrow. thanks again

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Tootie Pang

iTrader: (2)

"...thanks iroc, i will get on that right after work and let you know something tomorrow. thanks again"

Sure you will.

sofakingdom

iTrader: (1)

Well ya know, maybe he did... he's had over 16 years since he wrote that to work on it, here's hoping he got it handled.