Have you cleaned the throttle body? Might give that a try.

 

how many miles since the last tune up?

 

I have a 2005 4runner and starts and runs like new. No rust on the body anywhere. Just plugs one time at 100,000 miles. Now with 210,000 miles. OEM tranny and engine - never seen a mechanic.

brakes at 100,000 miles.

How many miles on this 2005 Camry?

I bought my daughter a new Camry 2015 for her graduation from FSU.

Car is now in Denver and running great with 55,000 miles.

Change that engine oil and filter every 5000 miles and they will run right a lot longer.

 

I thought about throttle body cleaning, but no time and no tools to do it at this moment.
Don't know about tune up. Bought the car last year. Probably it's been a while.
But already spent ~$3000 on it. I don't want to spend much more at this moment.
Also, the car runs very good, except hesitation a little bit.

Next car will probably be a 4Runner or Land Cruiser.

 

I thought about throttle body cleaning, but no time and no tools to do it at this moment.
Don't know about tune up. Bought the car last year. Probably it's been a while.
But already spent ~$3000 on it. I don't want to spend much more at this moment.
Also, the car runs very good, except hesitation a little bit.

Next car will probably be a 4Runner or Land Cruiser.

well you might start with changing the spark plugs and putting some fuel injector cleaner in the tank.

 

It could be just about anything. The most common are:

• Mass Air Flow Sensor (dirty or defective)
• Fuel Pump (old and starting to die)
• Air Fuel Ratio Sensor (dirty or defective)
• Exhaust Leak
• Clogged Catalytic Converter (too much back pressure)
• Engine (old and/or worn)
• Transmission (old and/or worn)

Does disconnecting the battery for 15 to 30 minutes seem to make things better, if only for a few hours?

As others have suggested, connect an OBD2 reader to your vehicle and view the LIVE DATA as you are driving the vehicle around town and on the highway.

 

Thanks.
I'm not expected the car to drive like new. But hopefully to improve its driving through some simple things.
Will try b12 chemtool to clean the fuel system since it is easy to do.
Car is at 170,000mileages, which I think it is young for a Camry. But 2005 car is somewhat old.

 

Those speed hesitations look like trans shift points.

 

I agree. So I changed the fluid. But it did not help.

 

Fluid additives for trans to help with shifting?

 

I added a bottled of Lucas. Did not make any improvement.
Will likely change to transmission fluid again. But not soon.

 

Don’t put any additives in the trans. Doing a few drain and fills with Toyota fluid is the best thing you can do for the transmission. That and changing the trans filter. If you haven’t cleaned the throttle body, it needs that too and that can help these fly by wire throttle bodies a lot.
Make sure you have a clean air filter (preferably OEM), good spark plugs (some shops won’t change the 3 in the back since it’s a V6…be sure you are having a reputable shop do the work and ask for the old plugs!), good battery (make sure no corrosion and that it tests good…unhook and clean up corrosion if it has it and apply terminal protectant once done)!
Definitely check for codes or have a shop do that. Especially transmission codes or anything that may set a code but not turn on the check engine light!

 

Sounds like a lot of $$ to me. But thanks.
Considering changing spark plugs if wife allows the $$.

 

Oh and on spark plugs, get the denso iridium’s! Generally, OEM is best if you can afford it.

 

Based on the descriptions in your original post, you are experiencing tip-in hesitations, because every time the transmission upshifts the engine drops back down to the lower rpms where you encounter the hesitation. That really doesn't have anything to do with the transmission.
The condition probably improves a bit after fully warmed up.
You mentioned that you are going to clean the throttle body and clean the fuel system, that would be the best place to start before doing anything else! Might do an idle relearn.
Do the basic stuff first before jumping into more complex stuff!
Just saying!

 

I agree with you.
when engine hesitates, the RPM goes down.
This is mostly noticeable after cold start. When engine is warm, it is minor and drives very smooth.

 

Well, there you have it, start with what you plan on doing then go from there!

 

I'd check the spark plugs leads first, low RPM hesitation could be a failing lead, most noticeable at low RPM and under acceleration. Skeptically replaced mine a couple of years ago on the advice of an older mechanic and my hesitation disappeared, I was all ready for new plugs, injector cleaning and top end inspections, turned out to be a simple fix. There was no visible damage to the leads, I guess the insulation just weakened with age.

 

Dirty MAS would be what I would check first

 

and check for air leak near your MAS. The higher volume of air bypassing the MAS sensor during acceleration will make it act like a dirty or faulty sensor until you get up to speed and the air volume drops

 

Cleaned it a few months ago and it was much better.

 

My 2010 Camry LE hesitates a little when I push the accelerator from idle. However, if i push the accelerator a little more the vehicle starts moving with a higher speed. Also sometimes I hear a misfire sound at that time.