Wierd Acceleration

[PsychoPaul]

ok i did a small search but didn't find something similar. But i didn't really know what to search for.

I have a 93 V6 LE.

The problem i currently have with my car is. From a standing start. If i floor the gas the car accelerates fast. But what happens is that 1 second later it bogs down and then goes fast again and does this for a few more times then it's fine. I noticed that the rpms jump up and down during this time.

I have an auto transmission so what i have tried is.
1 - D with no O/D. does it
2 - 2 w/ and w/o O/D does it
3 - L w/ and w/o O/D does it

So basically it does it no matter what you have it in and even if it's warm or cold. Though when it's warm it does it slightly less but still there. I have reved the engine while in nutral and it's ok. Though i did not floor it.

The car works, i can drive it and go places no problem. I can't accelerate very fast from a stand still. I have to gently press on the gas.

I brought my car to my mechanic. Says it's not the tranny. He did a couple checks with the intake (removed the electronic cable from the box right after the filter box). Did the diag LED thingy. Didn't get any codes. he would have hooked up the diagnostic system to it but he didn't have the connecter. So nothing from that.

Anyway looking for any kind of input. Thanks
Paul

[Killa_Kojak]

i have the same problem with my 93 V6 too i figured it was just me my guess is the ACIS valve is dirty, egr is clogged up, intake is draggin its ass, i shall figure out this problem as soon as i find some motivation....until then lets hope these fine people know whats really going on....

[Toysrme]

1) Vacuum leak
2) spark plugs
3) Ignition/cam timing
4) fuel filter
5) rest of the fuel system


Start checking in that order...
Ignition timing should be set to 10*btdc. If ignition timing is correct, cam timing is correct. (if it's not been played with)

If you have a volt meter, tap one of the two o2 sensors and take a 5 min drive. Once the engine has warmed up, floor it from a stop and the o2 voltage should jump, and stay over 750mv (0.75v). It shouldn't rise above 830mv.

If it stays between there while you've got the gas floored, the entire fuel system is fine don't bother checking it further.








Seriously. Sounds like a vacuum leak more than anything else.

[PsychoPaul]

Thanks for the response guys.

If anyone has any more suggestions please let me know....

[BlueFusion6851]

always try seafoam through the brake booster line!
i did that today and my car sounds/feels as good as new

[en1gma]

Check your distributor button. Mine just recently blew a hole in itself and caused the sparks to misfire. This is a common problem on high mileage Camrys apparently. Good thing though, very cheap to fix.