05 LS430 REV problem
01-27-12, 02:04 AM
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05 LS430 REV problem
Just picked up a used 2005 LS430 yesterday I love the car but I went to pass somebody and it down shifted but wouldn't up shift or rev past 4000 rpm
it just stayed in gear and wouldn't up shift until I let off the gas pedal car runs fine and has no check engine light has 90k miles on it I'm so confused its like somebody set the rev limiter at 4000 rpm anybody know what I should start checking or anybody ever heard of this? 
Thanks for any info
it just stayed in gear and wouldn't up shift until I let off the gas pedal car runs fine and has no check engine light has 90k miles on it I'm so confused its like somebody set the rev limiter at 4000 rpm anybody know what I should start checking or anybody ever heard of this? Thanks for any info
01-29-12, 09:47 AM
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This is going to be interesting, I don't know what your problem is, but let us know how this turns out.
Does anybody know how the vvt works on these? i think its different than on hondas, but doesn't this problem sound like something to do this this type of system
Does anybody know how the vvt works on these? i think its different than on hondas, but doesn't this problem sound like something to do this this type of system
01-29-12, 01:51 PM
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Just picked up a used 2005 LS430 yesterday I love the car but I went to pass somebody and it down shifted but wouldn't up shift or rev past 4000 rpm it just stayed in gear and wouldn't up shift until I let off the gas pedal car runs fine and has no check engine light has 90k miles on it I'm so confused its like somebody set the rev limiter at 4000 rpm anybody know what I should start checking or anybody ever heard of this? Thanks for any info
it just stayed in gear and wouldn't up shift until I let off the gas pedal car runs fine and has no check engine light has 90k miles on it I'm so confused its like somebody set the rev limiter at 4000 rpm anybody know what I should start checking or anybody ever heard of this? Thanks for any infoJimbo
01-29-12, 11:12 PM
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I'm starting to think that my catalytic converters might be plugged car runs great as long as your not on the gas to hard, I keep on hoping that a check engine light comes on so i can read the code but hasn't and I've put about 200 miles on it. thanks for the help guys I'll keep you updated
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01-30-12, 06:54 PM
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02-04-12, 01:00 PM
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05 LS430 REV problem
You might want to try cleaning the MAF with CRC or similar MAF cleaner. I changed plugs, TPS, and cleaned throttle body before doing so without success in fixing the REV problem that you describe. Cleaned the MAF and noticed an immediate improvement, but still had a slight stumble in acceleration. Drove it this way for about a year (wife actually drove it because I was deployed) and just replaced MAF today. There is absolutely no hesitation now. Thinking about going to the dragstrip. J/K. I also removed my K&N as it appeared that the oil from the filter may have been affecting the MAF.
Replaced the MAF with a Beck Arnley 158-0777 from Amazon that cost $82.84 (w/ $3.99 for next day shipping). So far so good. Considered purchasing a Denso 197-6030 ($82.94 Amazon) and the OEM 2220422010 ($129.35 Sewell). We'll see how it works out.
Replaced the MAF with a Beck Arnley 158-0777 from Amazon that cost $82.84 (w/ $3.99 for next day shipping). So far so good. Considered purchasing a Denso 197-6030 ($82.94 Amazon) and the OEM 2220422010 ($129.35 Sewell). We'll see how it works out.
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