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Lexus RX 400h Engine Problems

52 messages,  Last post on Feb 05, 2009 at 6:59 AM

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What is this discussion about? Lexus RX 400h, Engine, SUV

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#29 of 52 Re: New 2007 RX400h Stuttering/Hesitating, etc [apg97ss] by eshapir Jan 30, 2007 (10:23 am)
Replying to: apg97ss (Jan 30, 2007 6:59 am) I can tell you that I felt a slight hesitation/oscillation when we first drove the car. We're up to 600 miles now and its totally gone away. I believe that during the first few hundred miles the car is analyzing the proper air/gas mix and I chalked it up to that.   Hope your situation improves.   Ethan Replies to this message: apg97ss (Feb 06, 2007 5:21 am) gtoph (Feb 06, 2007 8:27 am) hilandr05 (Mar 04, 2007 5:21 am) apg97ss (Mar 04, 2007 5:59 pm)
#30 of 52 Re: New 2007 RX400h Stuttering/Hesitating, etc [eshapir] by apg97ss Feb 06, 2007 (5:21 am)
Replying to: eshapir (Jan 30, 2007 10:23 am) Thanks Ethan   Yes, car now has 2,000 miles and has gotten better. Problem before was that at cruise at about 60 mph with constant gas peddle, power would oscillate up and down. Power still feels a little off, but oscillation is gone. Replies to this message: gtoph (Feb 06, 2007 8:27 am) hilandr05 (Mar 04, 2007 5:21 am) apg97ss (Mar 04, 2007 5:59 pm)
#31 of 52 Re: New 2007 RX400h Stuttering/Hesitating, etc [apg97ss] by gtoph Feb 06, 2007 (8:27 am)
Replying to: apg97ss (Feb 06, 2007 5:21 am) Our 07 is still a baby with only around 350 miles on it, but I haven't notice any of the issues posted in here (knock on wood). I can tell when the ICE shuts on/off, but it's pretty minor and I wouldn't consider it out of the ordinary.
#32 of 52 Oil Changes by solar2000 Feb 09, 2007 (6:06 am)
Where do you get oil changes once your warranty runs out? I guess its possible that its too early since the rx400h just came out last year? But I'm guessing they probably have to be done at lexus? and how much are they usually? thanks! Replies to this message: hilandr05 (Mar 04, 2007 5:18 am)
#33 of 52 Re: Oil Changes [solar2000] by hilandr05 Mar 04, 2007 (5:18 am)
Replying to: solar2000 (Feb 09, 2007 6:06 am) Since the RX400h has the same powertrain as the Toyota Highlander Hybrid, I take my 400 to a Toyota dealer that is closer than the Lexus dealer and MUCH less expensive. I got the oil and filter change yesterday for $27.12, including tax. I have over 16,000 miles on the 400 and this is my third oil change at the Toyota dealer.
#34 of 52 Re: New 2007 RX400h Stuttering/Hesitating, etc [apg97ss] by hilandr05 Mar 04, 2007 (5:21 am)
Replying to: apg97ss (Feb 06, 2007 5:21 am) I have over 16,000 miles on my 400h and have never experienced this problem. If anyone else has it again, try turning on the cruise control on a level road and see if there is any difference under cruise control. Replies to this message: apg97ss (Mar 04, 2007 5:59 pm)
#35 of 52 Re: New 2007 RX400h Stuttering/Hesitating, etc [hilandr05] by apg97ss Mar 04, 2007 (5:59 pm)
Replying to: hilandr05 (Mar 04, 2007 5:21 am) thanks. it appeared to get better on its own after some time. this was explained as the computer had to get calibrated. given my wife's driving, i dont know how any computer could calibrate to that (ha). seriously, it was a concern for first 1,000 miles and then seemed to get better after. will let this site know if re-occurs. thanks
#36 of 52 Timing Chain or timing belt? by texamau1 Mar 14, 2007 (3:59 am)
Does any one know if the Lexus 400h engine have timing belt or chain?? Thanks, Replies to this message: pf_flyer (Mar 14, 2007 4:18 am) texamau1 (Mar 14, 2007 3:50 pm)
#37 of 52 Re: Timing Chain or timing belt? [texamau1] by pf_flyer HOST Mar 14, 2007 (4:18 am)
Replying to: texamau1 (Mar 14, 2007 3:59 am) A quick search for replacement parts shows that it's a belt. Replies to this message: texamau1 (Mar 14, 2007 3:50 pm)
#38 of 52 Rattling at idle by mokamoto Mar 14, 2007 (10:29 am)
Is anyone else experiencing a rattling noise coming from the ICE at idle? My 400h was among the first in the batch to come to the US as I was number 10 on the list in Hawaii. I've brought it to the dealer several time regarding the noise, and the tech noted that he hears the same rattling coming from the engine of other 400's. It's not a consistent rattle that has a rhythm or such, but a more irregular rattle that can be heard over the engines idle noise. The problem seems to be getting progressively worse as it would only occur on an occasional basis several months ago.   Thanks.

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