Tech
Newbie
With the "desired" idle speed bouncing it appears that the engine is just doing what its told.
The faulty TPS suggestion was good. With the motor off but key on slowly cycle the pedal looking for jumps in the numbers on the screen.
Just a guess here but it looks like it takes forever to get into closed loop. I think that is what happened around 185 on the second graph. The ECU could be blipping the throttle expecting to see a response from the O2 sensor and not getting it.
My BB goes closed loop a lot faster than that from a cold engine.
I may have to look at my distributor magnet I get the random but constant burble not quite as smooth as it could be
The faulty TPS suggestion was good. With the motor off but key on slowly cycle the pedal looking for jumps in the numbers on the screen.
Just a guess here but it looks like it takes forever to get into closed loop. I think that is what happened around 185 on the second graph. The ECU could be blipping the throttle expecting to see a response from the O2 sensor and not getting it.
My BB goes closed loop a lot faster than that from a cold engine.
I may have to look at my distributor magnet I get the random but constant burble not quite as smooth as it could be