99 RX300 Sluggish/hesitation
02-02-09 | 07:44 PM
#16
Driver School Candidate
Joined: Mar 2008
Posts: 1
Likes: 0
From: SD
Try checking/cleaning the MAF (Mass Air Flow Sensor) There are directions in another thread. This may improve your performance if you are having any rough idling,stalling, poor acceleration problems. The cost of a can of MAF cleaner spray is about $7.
02-04-09 | 03:34 AM
#19
Instructor
Joined: Oct 2005
Posts: 1,032
Likes: 103
From: pa
well i had this very same hesitation problem. Use to think i would die when merging onto the highway because it never use to go right away. Went through a similar checklist of what could be causing it and it turned out to be a slack Throttle Cable. I had almost an inch of slack on the throttle cable, it was an easy DIY to fix. After tightening up it runs like a sports car in my mind because of how bad performance had degraded.
Check your throttle cable before wasting money on the other fixes. My mechanic made me clean injectors and change spark plugs which was a waste of money. If it was not for this forum i would have spent alot more money guessing what the problem was when it was so simple.
I hope this is your prob and not something more costly!
Check your throttle cable before wasting money on the other fixes. My mechanic made me clean injectors and change spark plugs which was a waste of money. If it was not for this forum i would have spent alot more money guessing what the problem was when it was so simple.
I hope this is your prob and not something more costly!
02-04-09 | 04:41 AM
#20
Driver School Candidate
Joined: Nov 2008
Posts: 29
Likes: 0
From: Florida
with regard to the throttle cable adjustment, see this link where LEXMEX has a pic and some instructions:
https://www.clublexus.com/forums/rx3...st-enough.html
https://www.clublexus.com/forums/rx3...st-enough.html
02-09-09 | 02:55 PM
#21
Lexus Champion
Joined: Jan 2003
Posts: 2,754
Likes: 5
From: Colorado
I'd rather get a power button for the tranny.
02-10-09 | 06:49 AM
#22
Lexus Champion
Joined: Aug 2007
Posts: 4,507
Likes: 35
From: Bethlehem Twsp. Pennsylvania
It's the adaptive tranny - one of the few needless inventions in my humble opinion. My RX300 always feels peppier after the major service at every 30K. You can pull the fuse for 30 seconds and drive aggressively for a few days. Though once you start to baby the throttle, it'll get wimpy again in a few days.
I'd rather get a power button for the tranny.
I'd rather get a power button for the tranny.
And then I get "what are you doing to my car?"
02-10-09 | 07:11 AM
#23
Rookie
Joined: Feb 2009
Posts: 62
Likes: 2
From: NY
Dragular and Artbuc,
I am going to have my mechanic check on that (throttle cable) just for the heck of it. Not a bad idea.
I am at work dreading the call from Lexus today about my bill. I have the same problems it seems as many people in here with a sluggish car and that is AFTER I changed the both B1 and B2 O2 sensors. Fuel to air ratio problem.
I am going to have my mechanic check on that (throttle cable) just for the heck of it. Not a bad idea.
I am at work dreading the call from Lexus today about my bill. I have the same problems it seems as many people in here with a sluggish car and that is AFTER I changed the both B1 and B2 O2 sensors. Fuel to air ratio problem.
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