Hybrid Technology Unique topics related to the 2004 -2009 RX400H model hybrid drivetrain and other features/options found only on the RX400H. Please use the main forum for discussion about shared components with other second generation RX models.

hesitation on accel 400h hybrid

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Old 08-13-18, 06:11 PM
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tsager
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Default hesitation on accel 400h hybrid

feels like engine hesitates on acceleration
Old 08-13-18, 06:12 PM
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tsager
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no check engine light car has 197k on just replaced plugs with factory replacements, no battery concerns
Old 08-13-18, 06:23 PM
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joedaddy1
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did you try the ISC reset / battery disconnect? What year is your car? Also, where did you buy the plugs?
Old 08-14-18, 11:08 AM
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tsager
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Default rx400h hesitation

Its a 2007 , the plugs were bought at local parts store they are factory replacement nippo denso, what battery reset are you referring too? I know after I just replaced the battery under hood with green grodies on terminals causing other problems like TPM and other they have gone away
Old 08-14-18, 04:01 PM
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smassey321
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Ours did that when it had a partially bad coil. I did not get a check engine light or codes but I was able to see misfires on Cyl 5 using ebay Techstream.

https://www.clublexus.com/forums/hyb...id-system.html
Old 08-14-18, 05:57 PM
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Please, don't "just disconnect" 12V. If you really want to reset something, pull its fuse. Fuse names are on the fuse box, just keep in mind, it's mirror image.
Can you be more descriptive on what exactly do you mean by hesitation? Feels like is not really a good gauge. Sometimes bad gas batch can do this. Try to be as specific as you possibly can AND check your air filter.
Old 08-14-18, 05:58 PM
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Speaking of gas... You didn't by any chance fill her up with 87?
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