3sgte hesitation Options

[rjbibeau]

i'm working with a 2nd gen 3sgte in an mr2 and when it's below 32 degrees outside or so when started it has a wierd hesitation when you open the throttle alittle bit almost like a rev limiter. but when i unhook the tps the hesitation goes away but soon as the engine is warmed up and the tps is connected again it runs perfectly fine. although when we first started the car up the tach was registering but not the right rpm it was under of what it was supposed to be. for example at like 4 grand it would read maybe 2. the car drives perfectly fine after being warmed up. i remember seeing something about the adjustment screw on the afm and it controls how much air is bypassed. would adjusting this screw fix the problem with the hesitation. any ideas?

This post has been edited by rjbibeau: Feb 14, 2008 - 2:08 PM

[mr2nerkitty]

Yea he really didnt explain it that well. It doesnt hesitate just when its cold and its not when boosting its just when giving it very little throttle, as you saw in the video. It happends under 1k, i have no tach so its all by sound and feel. I figured it was a tps problem. We put it on without even calibrating it. So im sure thats the problem, just didnt know that it was that important. The hesitation isnt all that bad either, it doesnt dramatically affect the performance of the car, or at least none that i can tell. I dont even notice it when accelerating because i rarely give it so little pressure. I only notice it when i am coasting and let off the gas or when i am turning a corner and apply little gas. God its so hard to explain but its gotta be the TPS. I guess when we find time or another decently mild winter day we will fix it.

LAGOS you are a freaking genius....lol you help alot on MR2oc too. Thank you

This post has been edited by mr2nerkitty: Feb 15, 2008 - 5:54 PM