1990 Throttle hesistation

[Schrade]

Originally Posted by Franke

Wow, never seen that on my car. Voltage is ok then but why the single momentary open loop at initial 1.6-2.4 % tps? It seems as if there is a flat spot on the tps but I think you said you changed it. Correct? Also, have you ever replaced the O2 sensors? One side seems to be lean at idle.

https://www.youtube.com/watch?v=Vl4INfOBUiY @ :36

I just noticed that Franke - that the momentary Open Loop, while it's been in CL for several minutes, DOES CO-incide with the excession of 1.6 % TO.

I'll see if I can replicate that, and get exact data for it...