Why does my car run like an absolute dream with the MAF sensor unplugged? Also, what is happening with the computer if it isn't getting any infor from the MAF? is it bad? Anyone else noticed this? Thanks for the help Rob ------------------ 1987 IROC-Z Auto (LB9) Black/grey interior with the stance of a streetfighter Mods Custom exhaust. 4 Inch pipe from the headders all the way back to a single muffler at the rear. No Cat. Future mods due in March: K&Ns RAM Air Air foil AFPR Hoping to get a couple of tenths with that lot

That's the computer just trying to tell you something.
At this point you're about 4 steps away from swapping to a carb.

When it starts running better without the PROM in the ECM, you've made the next step.

Will it be ok though?

I can't see that anything bad will happen without it plugged in. I'm not wanting carb, I like my TPI

Rob

See your other post....

Maybe the open loop conditions just blend real well with your climate? That's if you dont have SD... and as far as I know open loop is just for emergencies ONLY and diagnostic purposed, but i could be wrong, anyone else know?

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1980 Camaro, '88 Police 350 engine, Headers, full exhaust, completely redone, my baby!
1988 Iroc-Z L98, MSD 6a, Accel coil, K+N's, Airfoil, Coolant Bypass, Flowmaster, Gears, Late model Bose, I like the 80 better

open loop is for when the engine is still warming up. When the O2 sensor has not completely warmed up it can't send accurate information back to the ecm. The computer keeps the car in open loop until the temperature is hot enough for the O2 sensor to work correctly.