okay.. so ever since i got my tl.. i've noticed that whenever i am driving slow in traffic, tap the pedal to move up a bit, let go, and all of a sudden, my rpm will drop anywhere from 2.5k rpm - 4k back down to idle (800) once i step on the brakes. no cel but i thought it was weird.. any input?

i'll try and get a video for you guys

on second thought.. my valves click or something clicks while i am in park or in load.. could it have anything to do with that?

here's a vid of the ticking/clicking:

http://www.youtube.com/watch?v=wUyTDzRGyu0

the ticking/clicking only happens when i barely give it a bit of gas and i can sometimes hear it while i am accelerating up to speed..

here's a video of the rpm dipping.. some of you guys might think its normal but it doesnt feel normal to me.. it's like everytime i get on the gas and let go for a bit and brake.. feels like im motor braking..

http://www.youtube.com/watch?v=JZ4ZlCIAUh0

watch at 0:05, 0:15, and 0:25

01tl4tl.. ? anyone? btw.. i replaced the purge control solenoid valve because it was ticking like mad crazy.. but it still didnt solve the problem in the first vid.

dont know if its normal but my 03 does the same.

^ the ticking noise or the rpm dipping?

I dont know what's going on, but it wont hurt to clean your IACV.

start with inspecting the throttle cable mechanism for crud and lube all

rpm prob: clean IACv fully- remove the TB and remove the entire rod assembly from TB
NO its not normal operation to be anything but smooth and stable

no speakers here,, so no advice on ticking

Ticking doesn't seem to be normal. At least my car doesn't do that. It might be your valves, but I'm can't say for sure.

i'll check my iacv today.. as for that ticking sound, i know for sure it's not normal. i don't hear it on any of my friend's tl-s' car. pretty sure this plays a part on why im getting shitty mpg.

RPM it happens, and actually I do have some ticking. I have herd that this could be the valves.

FYI I do not have bad gas mileage. 200 half tank.

I have a 2005 TL 5AT and the rpm dips the same way while changing gears....i drive in the sport shifter mode all the time and when i step on it and let go of the gas fractionally to change gears (sometimes) my rpm will dip down to 800ish and go back up....i thought that was normal....

about the ticking noise....i have the same....i think its from the valve....but recently i took into firestone (for an alignment) and my buddy over there just tugged on the belt tensioner back a little bit and the noise was gone for couple weeks and it just started getting back again....

^i think its the belt tensioner.. i remember getting my tl serviced and under recommended services.. it said new belt tensioner we'll see

well i had gotten my 105K servicing and I told them not to replace the tensioner....they came back and said you need a new one....i paid them $110 for a new tensioner (i know...i had supplied all the other parts)....and still the noise persists....so either they didnt install it right or the didnt replace the tensioner....

Extreme. It sounds like a serp belt tensioner to me.

i would also like to mention that the sound seems like it's coming from the timing belt area .. more towards the passenger side so i guess you guys are pretty much correct. funny thing is that i've NEVER seen anyone with this problem.

I had a ticking noise when I first bought my car. Does it happen when the revs are around 1-1.5k (somewhere around there). If it does, then it is the belt tensioner. And it happens in any gear P,R,N,D.

go to harbor freight tools or a parts store and buy a mechanics stethascope $4-10

all this wondering will end once you take a listen to the various moving parts- bearings for ac belt tensioner etc
that tensioner is not part of the 105 and is a common wearout, mine went at 80

Be glad they insisted on the master pulley for timing belt- thats an engine killer

valves just compare to each other for sound, you can tell whats not right

you sir are right. it happens in ANY gear. i can be in park or neutral and it would still do it. i could be in d and it would make that sound when i barely tap on the gas but eventually stops making the noise once i get up to speed or when i am no longer in between 1-1.5k..

so i should just purchase this part and install it myself ? how hard is the installation ?

last question.. which specific tensioner do i need to replace? there's a tensioner for the timing belt, serpentine / alternator belt, and auto..

get the stethascope- it solves problems.confirms noises

its probably the ac belt tensioner assembly,,approx 100$,,
ck around doesnt have to be dealer item

I don't know exactly which belt tensioner it was, but I think it was the serpentine/alternator belt tensioner. I went to the mechanic. He took a stethoscope and listened which I pressed on the gas. I left my car there. He went to the dealer got the part and did it for me. I think if you know how to change the belts on your car, you should be able to change the tensioner too. They charged me $180 for the job (parts and labor).

It was very annoying. I had to jack rabbit start the car every time I was moving just so I wouldn't hear that annoying sound. To me, it sounded like a ratchet when its turning. Its pretty embarrassing.

^no kidding man.. when i roll up to meets, stop then get back on the gas to turn a corner.. that's all you hear from my engine bay.. LOL

when mine went to the shop-- finally,
a tech walked out and said- bet thats our tensioner pulley car!!

180 would be in the range for parts and labor

hey swoosh- why are you letting off the gas to shift?
no need to lift-
that screws with the trans system a little too- its made to run on pressure from rpm

what i meant it after I shift if i lift my foot off the gas to coast....

or if am doing 30 in 3rd gear and i wanna coast i let of the gas and shift to 4th....the rpm dips to 600-700 odd and stays at 800-900...just below 1K as I coast....

Sorry for the misleading info....and thanks on the tip bro