2002 Ford Sports Trac Idle Problem

[Ryancolemanmvp]

Hi I have a 2002 Sports Trac with a Idle problem. When at Idle the truck seems to drop rpm's and sort of stutter for a second and then pick back up. I have replaced the spark plugs,air filter,Idle control valve, the rubber l rube that loops from the front of the engine to the back(sorry I forgot the name of the part). The truck seems to run alot better but still drops rpm's and stutters a little bit when at idle. Also no code is being thrown at the check engine light. Help please! Im loosing my mind with this problem.

Thanks,

Ryan

 

[Ryancolemanmvp]

Sports Trac Idle Problems

Sorry also have a new fuel filter.

 

[LONO100]

test for a vacum leak near the upper intake manifold gasket. you can get a propane can and turn it on without igniting it, and running it along the gasket, if you get a jump in rpms at any point, you have a leak. i hope i explained that in a way that makes sense. if it doesnt search youtube for "how to test for vacum leaks". good luck

 

[swshawaii]

Also clean the throttle body and MAF sensor.
Should be considered routine maintenance. GL

 

[Ryancolemanmvp]

Thanks guys!! Now would I be looking for a seal going bad on the intake manifold or more a vacum line going bad ?

 

[LONO100]

it could also be a vacum line. check them good. sometimes its hard to see the cracks in those rubber hoses and pipes. i just went to a pick and pull and replaced my cracked elbow for a about a dollar. aamco was trying to charge me 600 to find my vacum leak. i just went there to get my codes read and solved it myself!

 

[Ryancolemanmvp]

Is there a diagram that will tell me all the vacum lines near the manifold?

 

[LONO100]

contact the moderator ncranchero. he might be able to help you.