2000 RX no codes
Thread Starter
Driver School Candidate
Joined: Sep 2018
Posts: 13
Likes: 0
From: CO
thanks Salim. It seems to have considerably less power but since I started working on her I’m paying closer attention and if you say that’s normal then I won’t worry. I still have the (gerbils) noise behind the console so that’s the focus today.
Racer
Joined: Mar 2011
Posts: 1,817
Likes: 229
From: wa
Can you please clarify your concern? I see RPMs drop after you turned AC off, but that is actually normal. AC demands more power from motor, so ECM compensates by revving it some. My Dodge RAM does same - about 100 RPM difference.
Thread Starter
Driver School Candidate
Joined: Sep 2018
Posts: 13
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From: CO
I’ve recently noticed it’s harder to get up steep hills and my MPG is lacking. I thought the rpms seemed low when I put it in gear.
Intermediate
Joined: Feb 2014
Posts: 499
Likes: 71
From: FL
Those RPMs are normal for a warmed up car in drive and neutral. When hot my RX will idle in drive at around 630 RPM (using a code reader to get the true value). Your RPM meter looks similar to mine when swapping from drive to neutral at a stop.
Now that your RPMs at a stop is clarified, please explain your issues when going up a hill.
Now that your RPMs at a stop is clarified, please explain your issues when going up a hill.
Thread Starter
Driver School Candidate
Joined: Sep 2018
Posts: 13
Likes: 0
From: CO
Those RPMs are normal for a warmed up car in drive and neutral. When hot my RX will idle in drive at around 630 RPM (using a code reader to get the true value). Your RPM meter looks similar to mine when swapping from drive to neutral at a stop.
Now that your RPMs at a stop is clarified, please explain your issues when going up a hill.
Now that your RPMs at a stop is clarified, please explain your issues when going up a hill.
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CL Community Team
Joined: Apr 2001
Posts: 16,566
Likes: 1,391
From: Austin, TX
Check out the mode servo.
If you have not done so, please read through the sticky threads. Most of the problems that owners face are listed in there.
Salim
Pit Crew
Joined: May 2018
Posts: 160
Likes: 6
From: OKLAHOMA
this is exactly what my car is doing. When and only when the RPM's drop below 750ish like yours does, its very rough and vibrates my car. it cant be normal, because its so random. Sometimes when I pull up to a stop light, theyll drop to 650-500 and the engine begins to run rough, if I push on the gas a little it fixes it sometimes or if I turn on the headlights, it runs smooth. Does yours do this?
Thread Starter
Driver School Candidate
Joined: Sep 2018
Posts: 13
Likes: 0
From: CO
this is exactly what my car is doing. When and only when the RPM's drop below 750ish like yours does, its very rough and vibrates my car. it cant be normal, because its so random. Sometimes when I pull up to a stop light, theyll drop to 650-500 and the engine begins to run rough, if I push on the gas a little it fixes it sometimes. Does yours do this?
Pit Crew
Joined: May 2018
Posts: 160
Likes: 6
From: OKLAHOMA
A common issue with this car seems to be the idle control valve, I've cleaned mine at least 4 times and it did nothing. Maybe ours needs a new one?
Thread Starter
Driver School Candidate
Joined: Sep 2018
Posts: 13
Likes: 0
From: CO
Wow, ive finally found someone with the same issue as mine. Maybe we can help each other, no one seems to know what it is. Have you done anything to try to fix it? I've been replacing parts for months trying to fix it and nothing has worked...
A common issue with this car seems to be the idle control valve, I've cleaned mine at least 4 times and it did nothing. Maybe ours needs a new one?
A common issue with this car seems to be the idle control valve, I've cleaned mine at least 4 times and it did nothing. Maybe ours needs a new one?
Pit Crew
Joined: May 2018
Posts: 160
Likes: 6
From: OKLAHOMA
I cleaned mine the day before I made the video. I had a new belt installed and changed the plugs and wires. I’ve tried everything I know to help improve the situation and I read in a car blog that it’s possibly a hose with a crack. I’ll have to find that again and share it with you or inspect my hoses. I’m lucky because I knew the original owners of my RX and he was meticulous with maintenance. However, it’s almost 20 years old so I wouldn’t be surprised if it were something like a small crack in some old rubber.
So far I've done,
New Denso long life Plugs
Cleaned idle control valve, throttle body and MAF sensor
Throttle position sensor
changed coolant
transmission fluid and filter
rebuilt alternator
fixed cracked over fill check valve in gas tank
Multiple engine flushes
Tried almost every bottle of injector cleaner known to man
New purge valve on air box
New torque mount
Think thats about it
One other thing I do notice, sometimes if I floor it getting on a highway or something, Ill smell a rotten egg smell, This could mean a bad catalytic converter. I had this issue on a ford contour a long time ago, It idled real rough and would sometimes smell the rotten egg smell. Then one day it just wouldn't go over 5mph, sure enough it was the cat. But I was thinking that would throw a code, if it was plugged up. So I dunno...
Last edited by Androman; Sep 30, 2018 at 06:12 PM.
Intermediate
Joined: Feb 2014
Posts: 499
Likes: 71
From: FL
People have complained about the vibration in drive at a stop as far back as 2004, maybe earlier.
https://www.clublexus.com/forums/rx-...e-problem.html
A few folks have said that changing the engine mounts helps, but many had no relief after doing so. I just shift to neutral if it bugs me.
https://www.clublexus.com/forums/rx-...e-problem.html
A few folks have said that changing the engine mounts helps, but many had no relief after doing so. I just shift to neutral if it bugs me.
Pit Crew
Joined: May 2018
Posts: 160
Likes: 6
From: OKLAHOMA
I cleaned mine the day before I made the video. I had a new belt installed and changed the plugs and wires. I’ve tried everything I know to help improve the situation and I read in a car blog that it’s possibly a hose with a crack. I’ll have to find that again and share it with you or inspect my hoses. I’m lucky because I knew the original owners of my RX and he was meticulous with maintenance. However, it’s almost 20 years old so I wouldn’t be surprised if it were something like a small crack in some old rubber.