Toyota 4Runner Forum - Toyota 4Runner Enthusiasts Forum - fluctuating rpm !!!! need help please...

Toyota 4Runner Forum - Toyota 4Runner Enthusiasts Forum (https://www.4runnerforum.com/forum/)

- Engine & Internal (https://www.4runnerforum.com/forum/engine-internal-11/)

- - fluctuating rpm !!!! need help please... (https://www.4runnerforum.com/forum/engine-internal-11/fluctuating-rpm-need-help-please-1763/)

fluctuating rpm !!!! need help please...

hi guys ,( i appologize my english , i'm a german native speaker who is living in usa, vegas)

i'am new to this forum , i bought few weeks ago a 4runner with an blown head gasket , i changed the head gasket and almost everything is working fine .
Except one problem , when the engine is warm and i step on the gaspedal raise up to 25oo rpm , the rpm starts to flactuating every few seconds ( back to 1500 and then back to 2500 ) the idle is perfect .
Does anybody have any ideas what's worng ???

Thanks for you help , take care and god bless you

Al "the bavarian "

RE: fluctuating rpm !!!! need help please...

Quote:

ORIGINAL: Vegas62

hi guys ,( i appologize my english , i'm a german native speaker who is living in usa, vegas)

i'am new to this forum , i bought few weeks ago a 4runner with an blown head gasket , i changed the head gasket and almost everything is working fine .
Except one problem , when the engine is warm and i step on the gaspedal raise up to 25oo rpm , the rpm starts to flactuating every few seconds ( back to 1500 and then back to 2500 ) the idle is perfect .
Does anybody have any ideas what's worng ??? ways to improve gas mileage?

Thanks for you help , take care and god bless you

Al "the bavarian "

have you check the fuel restrictions and the tank vent plugged? I'm not so technical when it comes to rpm's so i guess you take it for a mechanical check up.