Questions & Answers for: Geo Prizm idle surges

...cooling fans must cycle in intervals to keep the coolant cool during stop and go driving or, long idle. They are also very important during the operational period of the AC during travel as well. i ...

idle surges in neutral? How much is it surging? Surging is usually a sign of a vacuum leak, such as broken hose, etc. Listen for hissing though a length of tubing you hold to your ear, and move around

idle ok but surges under all driving conditions,could this be up or downstream o2 sensors causing problem? If you have a check engine light on you can pull the code and it should tell you if its an o2

...idle Engine surges under all driving conditions/poor fuel milage can be many things. none of which can be solve in this forum. do a tune up yet? check engine lamp on, running,? pull DTC codes with ...

...warmed up but when it is I can feel it like surging and when I stop at a light and try to drive its idle is so low it dies I can push the clutch in and push the gas and my rpms dont go up my gas tank ...