this is not constant. sometimes it happening when I'm at WOT on 2nd gear, when RPM hit 4500 it stops accelerating for a couple of seconds then back to normal.

what is that? hot to cure it?

 

You could have a dead spot on your TPS. You can use a voltmeter to check it.

 

I put WOT from 2500 to 6000 RPM and hold accelerator in WOT

 

WOT = Wide Open Throttle

That post made no sense mang.

 

I meant that it probably cant be TPS, cause it stays on the same position from 2500-6000

 

My car does it too.

 

hmm, is it ok? when car stops accelerating at 4500 RPM at WOT and then continue?

 

I'm having a problem when I'm on the highway. I have no trouble accelerating, however if I try to maintain a constant speed around 3K RPMs, it will hold throttle for a couple seconds and then drop to around 2K. I have a feeling it is TPS related. Hopefully it's a problem I can let go for a little bit..

 

hmm, today that happened again on 3rd gear.

I was accelerating (WOT) and when RPM hit 4000 engine slowed acceleration (like there was no fuel) and then continued accelerating till 6000 RPM.

What can it be? thinking.gif

I noticed it happens only when I have like of gas or less.

I have 131,000 miles on engine (new rings 30,000 miles ago).
new fuel pump
new spark plugs
new OEM plug wires
changed fuel filter about 10,000 miles ago
just cleaned my air filter

dunno.gif

 

There is a flat spot in the Tib's dyno curve beteween 3500-4200ish RPM. I don't know if your noticing that, or a problem thats more severe.