Weird stutter when in boost

[Xit40]

Ok I took my car out for a drive this evening before I went to work. When I got into some boost in 4th gear once I hit like 13psi the car stuttered.....kinda like hitting the fuel cut but only for half a second and not as severe. It has never done anything like this before and I'm lost as to why this problem would just appear. It did it later on the way home too. I got into some boost and it did it again....i kinda stayed on he throttle and it did it again a couple seconds later. Any advice would be helpful. I didn't have this problem earlier today when I was driving around it seemed to just pop up. Think it could possibly have anything to do with the heavy rain we are getting or timing maybe that's the only thing that comes to mind. I wish I had my logger that I was suppsoed to buy today that would help a lot right now.

 

[Froyd79]

Check your plugs and gaps. If they are not new possibly replace them.

 

[Xit40]

Ahh good call on that. I'll check them out. Thanx

 

[hellotbone]

Similar to my problem. I was having.

Mine was the coils.

I changed plugs/plug wires/got an afpr/tuning everything to try and fix it. Went to the junk yard got a set of coils and perfect.

Funny thing was with mine for the first say 5 mins of a drive it would not do it then it would start that was an indication of electrical starting to break down when it got warm.

 

[ddavisaf]

I would check for a boost leak. It could easily be fouled plugs also.

 

[Catoboli]

i had this exact same problem with my 95 gsx, it turned out to be a problem with the internal wastegate, and the actuator. it was a real pain, it was exactly as you mentioned felt like fuel cut but not exactly, check your actuator on your turbo mine had rusted and would move around a lot, somuch that when it appied the force to open the wategate it would move itself and not open the wategate. weird thing is that it didnt always do it, only sometimes. i def recomend checking all the other things mentioned too, but take a look at your actuator its a longshot but it might be that

 

[Xit40]

I've done a boost leak test recently. Not since I changed to the 1G throttle body, but I replaced all the seals and put new gaskets in so that should be fine. I'm pretty sure the wastegate is good to since I just check it out when I had it off a few weeks ago, ported it out when it was off and everything. It's weird once it stopped raining the stuttering stopped, but I bought some new plugs anyways they're cheap enuff and the wires are NGK that are pretty new. When I get a day off I'll check for boost leaks again.

 

[cool_g_83]

I had a similar problem and tightened my intercooler piping with a socket as opposed to flat head (socket gets them MUCH tighter) and changed my plugs....fixed it, check into that goodluck