I have an 1999 Infiniti g20t automatic the car only has 142000 miles my car started having idling issues like if I had a misfire so I gave it tune up changed the plugs wires and distributor. Also replaced the air filter and mass air flow sensor. Started the car up and still bad idle code came up for throttle position sensor so I replaced it made sure is was in the right position started it up again this time gave me a code for the idle air control so I replace that also did the relearn for iac but my car has a really low idle, it’s idling around 300 to 400 rpm I’ll adjust a little higher but when I go for a test drive the car jerks really hard when shifting gears.
Any ideas of what it could be?
Well with that code often you have to replace the entire throttle assembly it works together and it could be worn out then it has to be reprogrammed by a professional mechanic
