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Bought a 2007 ES350, in great condition, but it stutters occasionally. That is, when I depress the accelerator, it doesn't respond or it hesitates before responding. Not sure how to address this issue. It's not severe, but don't want a dealer trip if it is something simple. Actually not sure it's acceleration or transmission. Bother!
Hello all, searched for days and can't find a solution to my problem hopefully someone can help. I have an intermittent surge in RPM. Smooth idle at about 500 RPM surging randomly to 900 rpm. No AC on and nothing added or changed that would be calling for an increase. I've done the obvious air filter and cleaned the MAF sensor. I also cleaned the throttle body (removed and cleaned well) and replaced the spark plugs with iridium Denso. My initial thought was an idle air control which I planned on removing and cleaning or replacing, but I'm not seeing a traditional IACV on mine so assuming it's part of the electronic box riveted to the right side of the throttle body. Additionally I've searched for a vacuum leak using propane but found no love that route either. It runs smoothly no misses or rough idle but the random surge is just enough that if I'm at a stop light for example and am not diligent about applying the brake well it will move the vehicle forward.....I'm stumped. Thanks in advance for any advice anyone might have.
I noticed when driving my 99 ES300 this morning there was some slight
sluggishness and hesitation when accelerating from idle. It didn't feel
like a smooth acceleration. The car has 128K on it and I did the trans.
fluid flush like 20K miles ago. One thing *I think* is occurring also is
the car is going thru gas faster than usual. Not sure if the 2 issues
are interrelated. There are no check engine lights on.
Any suggestions what the problem might be? I was going to do the following:
1. Disconnect the battery for a few minutes to reset the computer
2. Check for cracks in the connected area between air filter and MAF.
3. Clean the throttle body (any recommended cleaning products?)
Also is it safe to drop a fuel injector cleaner into the gas tank? If so which brand/product do you recommend?
Anything else that comes to mind would be appreciated.
I have somewhat of a sticky issue that I am hoping I can get some insight into.
Back in 2010 I bought a 2008 LS460L with executive package, a CPO with 27K miles on it. It worked just fabulously until I started hearing what sounded like water fall behind the front dash, it mostly happens when I accelerate from a full stop or from a slow down and subsequent right turn (yes kind of weird). The first time I took it to the dealer was in March 2012, the local dealer heard the sound, kept the car for 7days and 100 miles later they said they changed the water pump. I started noticing many issues right after this supposed repair was done, as follows:
(a) Coming out of a right turn (notice I keep mentioning right turns, it is sort of whacky as it does not do the same on left turns) it feels like that the engine will accelerate but the car does not seem to be move in unison but will lag behind it. Many times I can hear the engine revving but not so much as moving equally fast.
(B) I feel jerkiness in the car’s movements coming out of a full stop, accelerating on a uphill road, and just in general – not smooth at all.
© A few times the car actually shuddered while going uphill at about 35 – 45 miles per hour speed, and twice I have smelt something burning under the hood.
(d) I can still hear the water fall intermittently, it is starting to be more frequent and again it will happen most often after a cold start in the morning, then intermittently. Many times you can actually hear a soft water trickle behind the dash while the car is stopped say at a stop light. The real water fall as in a gush of water can be heard occasionally when accelerating from a stop or slow down. The tough part is that two times I have taken it in to the dealer, the car refuses to do it – murphy’s law and real spooky. Now the dealer is starting to think that I am delusional and they refuse to do anything about it.
(e) The performance on the car isn’t what it used to be at slow city stop and drive speeds – the issue is not noticeable at high speeds. I know it is behaving a lot differently after the so called water pump repair, in terms that it is choppy and jerky. The dealer says there aren’t any error codes showing up in their diagnostics.
It seems like the water fall problem was never resolved by the water pump replacement, the performance on the car is come to an unacceptable point for me personally, the dealer thinks otherwise. Any insight on this is appreciated.
Thanks in advance.