i cant really explain it, but im sure somebody knows what it is.. At higher rpms, 4 + ish, my car seems to like loss and gain power, or like...change the way it is excelerating. Its not a sputter or a cut out..donst feel or sound that way...its just a funny feeling? Anybody know what it is. I recently put new plugs and wirez, but who knows with our misfire prob...

 

I have the same problem...when I accelerate mine does the same thing...it might have to do with a rev limiter...I think? I was thinkin' it might be my 5sp T-56 trans bearings wearing. Not to sure....I know this doesn't answer your question...hopefully someone on here knows.

 

I think mine might be doing the same thing...

Mine hesitates under load around 3-4K RPMs, then is fine to redline. I liken it to a misfire or weak spark. Something's almost holding the car back from accelerating like it hits a wall or something then BOOM - takes off.

I think it might be the cat, coils/plugs/wires in my case, but Autotap shows NO misfires and no exhaust issues...

I'm basically stumped, but will let you know once I have all of that replaced.

 

To the original person how is your CAT? and when was the last time you did a fuel filter?

 

one thing to check is knock retard. Scan the car while acelerating and when you feel a power loss see if you are getting any knock retard. I went through a "surge" at about 4k RPM on a firends car (see my detionation post) and it was a combonation of the detionation and the knock retard that was causing it.


Other then that. Normal things like fuel pressure, filter etc could cause it as could a bad cat. a back pressure test is cheep and great at finding a restriction from a cloged cat

 

changed the filter about 6 months ago...its a 95 so its hell to get it scanned...i dont know about the cat..it dosnt have a smell at an idle or anything so i dunno, i guess it could be the cat...i dunno

 

a bad cat will not always smell. take it to an exhaust shop for a back presure test to rule it out. it's pretty fast and cheep

 

In my case:

No knock.
No misfires.
No misfire HISTORY.
Fuel looks good.
Tranny looks good.
No codes...

Nothing. Driving me mad. I think it's the cat, too, personally.

 

to the guy with the 95, is a 3.4L? if so you can unhook it relatively easily, and run an open y-pipe.


YOu guys have any rattling?

 

Without being in the car and feeling it personally...

...my money is on the cat.

 

where is the cheapest place to get one? online im guessing. I would like a highflow, possibly magnaflow or something of the such???

 

Look on eBay for "carsound", they make Magnaflow exhaust and cat products.

49009 is the universal fit 3" in/out. It's $60 and free shipping.

 

dumb question...what is the size exhuast for the v6 factory?? i dont remember, and dont want to have to go find me car to look...