My car has a bad stutter when i try to keep it at a constant speed. it happens right when i get back on the throttle lightly. But if i push the gas to the floor, it doesnt stutter at all. its only when im lightly pushing the gas trying to keep a constant speed.

BTW heres the setup
ls motor, drag turbo kit, safc, dsm 450's, msd digital 6 plus ignition, and coil, ngk BCPR7ES11 plugs.
UMMMMMMMMM, the car is completely tuned, ignition is retarded like 3 degrees, but theres no vaccume leaks.

It is really bad when im using the cruise control, the car jerks back and forth.

Anyone got any idea, or similar problems???

 

check your throttle cable

 

hmmm, never thought of that. The pedal doesnt seem to get stuck though. i think it has something to do with the afc hack. i wonder if anyone else running the hach has this problem

 

back from the dead. i have the same exact problem. could i be in the need of spark plug gapping?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybridb18 &raquo;</TD></TR><TR><TD CLASS="quote">hmmm, never thought of that. The pedal doesnt seem to get stuck though. i think it has something to do with the afc hack. i wonder if anyone else running the hach has this problem</TD></TR></TABLE>

I heard rumors of this problem being not fixable, something about the vaccum at part throttle like that and the motor actually cutting the injectors off for a second for fuel efficiency or something.

I forgot the details but I remember reading it over at pgmfi... j davis I am sure among others have also seen this... hopefully someone else can elaborate more surely.

will look for the thread over there though agian and try to link it.

 

when will people ever learn to quit using the damn hack. Get uberdata, hondata, whatever. Ditch that pos and get something worthwhile. Especially since uberdata is free(minus chip, burner, wideband)

 

Check your settings on the hack.

 

Mine did the same thing, and I was using Hondata (S200B)

 

I had the same problem with my hodnata s100.

You can tune it out. I found some issues happening like that when my distributor was going out on me. so check the voltage on that sometime.

Also check your base timing. and do a boost leak test as well. Sometimes higher vac leaks can cause a strange condition. I know exactly what you are talking about.

 

Just to be sure, hook up a voltmeter to the TPS-sensor. From what I've heard a bad TPS-sensor/bad connection can cause these kinds of symptoms.

 

Its common when running the hack.