Go Back   Club Lexus Forums > Lexus Model Forums > ES Models > ES300 and ES330
Sign in using an external account
Register Forgot Password?

98 ES300 Poor gas mileage?

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 06-21-09, 05:55 PM   #1
gmacrae
Driver
Trader Score: (0)
 
gmacrae's Avatar
 
Join Date: May 2009
Location: New Zealand
Posts: 149
Default 98 ES300 Poor gas mileage?

Hi guys. I'm usually found in the LS forums, but am here to help my Dad get his gas mileage better with his 98 ES300

The car does run well and has been well maintained, 150,000kms roughly.

It gets around 20mpg with gentle highway driving which makes it more thirsty than my LS400. Other than the poor gas mileage, the only thing the car does wrong is a high idle when its cold, higher than what i consider a normal cold idle, it's over 2000rpm. I would expect around 1200-1500 to be normal on cold start.

Any ideas? I'm thinking something along the lines of coolant temp sensor, maybe o2 sensors? Is there a common fault i should be looking for?

Thanks for any input guys

Gene
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
__________________
'95 NZ Rose Black LS400
gmacrae is offline   Reply With Quote
Old 06-21-09, 07:31 PM   #2
tmf2004
10 years on Clublexus
Trader Score: (12)
 
tmf2004's Avatar
 
Join Date: Nov 2004
Location: FL (PSL)
Posts: 20,381
anthonymichael34
Default

Throttle body cleaning, MAF cleaning, change filter, and Fuel injector cleaner will help.. Start with the basics first... GL..
__________________

2011 Vossen Clublexus Contest Winner

1999 GS400
2012 Kia Optima SWP TURBO

Past: 88 Samurai--87 mustang LX GT conv--95 Mustang GT auto--97 Lexus Es300
Quote:
Originally Posted by VtotheJ View Post
Drone is overrated......let the V8 breathe!
tmf2004 is offline   Reply With Quote
Old 06-22-09, 12:36 AM   #3
ASG14
Lexus Test Driver
Trader Score: (1)
 
Join Date: Jul 2006
Location: Stamford, CT
Posts: 1,038
Send a message via AIM to ASG14 Send a message via MSN to ASG14
Default

On top of ^, I'd also do the Seafoam through the brake booster line. But the best thing to do right off the bat is clean the throttle body like ^ said.
__________________
'96 Camry V6 (2.5L 2MZ-FE) Auto TRD Supercharged @ 6PSI
ES300 front end conversion
BBK Front
ES300 rear brakes

'95 Corolla AE101 Auto. In need of boost of some sort.....

Toyota of Stamford (CT) Parts Dept.
ASG14 is offline   Reply With Quote
Old 06-30-09, 02:52 AM   #4
gmacrae
Driver
Trader Score: (0)
 
gmacrae's Avatar
 
Join Date: May 2009
Location: New Zealand
Posts: 149
Default

dirty throttle body could affect gas mileage? Really?

What do you guys think about the coolant temp sensor? We'll probably do this anyway but can it make a difference in the ES's like the LS's?

Cheers

Gene
__________________
'95 NZ Rose Black LS400
gmacrae is offline   Reply With Quote
Old 06-30-09, 02:52 AM
 
 
 
 
Reply


Tags
300, 98, 99, bad, difference, es, es300, gas, increase, is09, lexus, make, milage, mileage, poor, terrible, type

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -7. The time now is 09:36 AM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info