Question about 2000 Ford F150 Flareside SuperCab
Starts fine, idles fine. put in drive you hear spark knocking, going from idle to 35 mph the truck runs rough, acts like it is running on six cylinders. when I get on the freeway and punch the gas the rpms climb up to 6 and it acts like the truck is laboring for speed. I had it in the garage a couple times and $1100.00 the problem hasn't changed. The last time I took it in they said they cleaned the throttle body it worked for a day. so far they changed spark plugs a couple coil packs and supposely cleaned the throttle body. I need to find and fix this problem without costing more money. Any suggestions
There is a hose from the right valve cover to the rear part of the throttle body. check if it turned soft and is leaking
Posted on Sep 30, 2013
Hello costly guesses have the( iac) checked idle air control valve this controls air pass in your throttle body this is a little eletric motor it is spring loaded this has a pintle that extends into a seat internaly in the throttle body if the bore were it seats has carbon build up or varnish it causes it to stick and unable to go were it should be or when it suppose to retract it stays stuck on the varnish can cause rough idle stalling no starts power loss like vaccuum leak this is not that exspensive to install under a 100 goodluck
Posted on Sep 18, 2008
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Posted on Jan 02, 2017
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