when slowly/steadily accelerating, engine will go through entire rpm range with no trouble. if i go WOT, it starts to stumble @ around 4600. any ideas what could be causing this?

 

ttt

 

Does it stumble just at 4600 RPM, or 4600 RPM and up? Does it happen all the time or just intermittently? Does it get worse when it is raining/wet out? I would check fuel pressure first, just so you know you are not driving around lean as hell.

 

i wont go above 4600ish but this happens only @ WOT . a smooth accel and it will go right to stock rev limit. there is also no SES light or anything.

 

anyone?

 

mine does the same thing, but I have not tried part throttle high rpm (that high anyway).

Mine stumbles 4500+ in thrid gear + at WOT. I drove around with a fuel pressure gague for a while with mine, all looks well.

Some say plugs, some say opti. I have new plugs/wires/msd digital 6/msd coil waiting to go on in the next week or so. I don't have an opti yet and not sure what to do. There is an MSD one waiting for me at a local shop, but some have had problems.
I also have LT headers waiting to go on, so I was kinda gonna do this all at once!

I dunno, if you have time, change the plugs and let us know how it goes. I'm curious to see.

 

well i was putting on my pacesetter LTs and found the boot on the #6 plug wire completely burned off. not sure it that was the problem since the headers arent done yet, but im sure it wasnt helping

 

i have a 96 t/a ram air and it does that also at wot it hits about 4500 rpm and it starts to hessitate real bad. i actually have to get off the trottle in order for it to shift.

 

ya, I can't sustain WOT after 4500 RPM. I have my hooker Lts and my msd parts just sitting there waiting to get installed. I might as well do that and change the opti (prob. go with the accel unit at this point) and go from there. My fuel pressure checks out just fine.

 

hey my car did that and it was the mass air

 

Well that's cool 'cause I have a spare MAF to try out. I looked for leaks tho, there are none. I also cleaned the stock MAF, no change. I can try the otherone.