P11 Acceleration Problem - hesitation - UPDATE page 2
My car is a Nissan Primera 1998.
The car idles normal, sometimes just a little bit lower than 700rpm but nothing extreme. The problem is when I start to drive it normally, the car starts to do like some pauses in the rpm range (hesitations), the feeling is like when you turn on and then turn off your A/C, but it does not impede to go through the rpm range until reach the rev limiter. The pause or hesitation doesn't appear at full throttle (WOT)
I can rev the engine freely in neutral, and there isn't any hesitation. its when i drive the car that the weird hesitation appear.
I already change the knock sensor
quick story - I had hesitation problems. Picked up some MAF cleaner and a MAF of a junkyard donor. Cleaned both MAF's and re-installed my original MAF. Still had hesitation. Swapped it with the freshly cleaned junk yard donor and no more hesitation.
Sometimes they just go bad and no amount of cleaning will help.
also check for dry rotted vac hoses they are the little gremlins...i had odd power loss intermitantly & then when i pulled everything apart the vac lines for egr/bpt were all jacked & 1 was completly severed
The re learn procedure can be found on many forums. If you had your ECU disconnected it may have lost its memory for the IAC. There should be an engine light on with it running how you explained, hopefully it didn't fry the ecu. I've had that happen on an 02 sport.