January 21, 2011Ive got a 92 F150 with a 300 6 in it love it but i cant get it to idle right bought it used and its only got 89000 mi on it idles irraticley and runs really rich its got a new throttle pos sensor in it and a new egr what am i missin here ? Its a kick as little truck that i love to drive hard so any help would be apprieciated
January 21, 2011idle air control valve?
January 21, 2011check the distributor main shaft to see if the bushings are worn out.
January 30, 2011k i replaced the idle control valve and it still is doing the same thing . Goes down
the road fine just wont idle right and is very rich at idle, it idles up and down to the point of stalling out ive had the fuel pump replaced fuel filters new egr is new throttle control sensors new im runnin out of sensors i think lol
January 30, 2011check the distributor for a loose main shaft!
this will cause the same symptoms of running rough at idle.
all you have to do is pop the cap and see if you can wiggle the main shaft!
January 30, 2011i have a new distributor in it , so i dont think thats it but thank you any thing else i can check ?
January 30, 2011check for a vacuum leak. that will cause erratic idling.
January 30, 2011ill do that thank you for the help . thank you every body that responded to my post its nice to have all this help at hand . When i get thumper runnin good ill post pictures of both my 150s.
January 30, 2011if you cannot find visible signs get a can of carb cleaner and spray it around the hoses and intake. if the engine stumbles or quits the leak is right there.
February 6, 2011thank you for all your help , ifound out it my fuel pressure regulator i pulled the line off and it purred like a kitten im bringing it to the shop tomm to get it replaced so thank you all for puttin me in the right direction
February 20, 2011K it was the fuel pressure regulator diaghram had a hole in it and it was sucking gas back into the vacum line its runnin great now . thank you again for all the help ill post a pic of both my trucks asap you guys were a very big help in headdin me in the right direction and thank you again