You are not logged in.

Reply

Dear visitor, welcome to Fortuner 4x4 Fans. If this is your first visit here, please read the Help. It explains in detail how this page works. To use all features of this page, you should consider registering. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here.

Message information
Message
Settings

Automatically converts internet addresses into links by adding [url] and [/url] around them.

Smiley code in your message such as :) is automatically displayed as image.

You can use BBCode to format your message, if this option is enabled.

Attachments
Add attachments

Maximum number of attachments: 5
Maximum file size: 150 kB
Allowed file extensions: bmp, gif, jpeg, jpg, pdf, png, txt, zip

Security measure

Please enter the letters that are shown in the picture below (without spaces, and upper or lower case can be used). If you cannot identify the captcha even after reloading it please contact the administrator of this site.

The first post

1

Friday, November 23rd 2018, 1:44pm

By ThamieD

Loss of power on acceleration and steeps

Greetings Forumites,

I need advice on a persistent problem with my Tuna V6 A/T.

1. When the car is idle the rev count is fine but when I hit the acceleration pedal - I hear a "air release sound" before the car actually picks up the rev count.
2. When I try to accelerate on take off - the car goes into a limp mode and rev count drop. I will then have to take my foot off the pedal and allow it to gain momentum and slowly increase acceleration. This also happens when I overtake - in some instances it switches off.
3. On a steep, I cannot accelerate but have to keep the acceleration at at certain point. If the incline is too steep, then it fails to switch gears.

I have replaced most filters - as at first I thought it was the petrol filter.

I have also disconnected the airflow sensor and just blew with compressor - then put it back.

Could the problem be the gearbox since it also fails to change gears on an incline? What about the 'air release sound' when I hit on the accelerator when the car is on idle?