Question about 1986 Ford Bronco II
1986 for bronco II stumbles on acceleration , lifitng up on the throttle allows engine to regain power. very slow acceleration seems to eliminate stumbling problem. any suggestions as to cause and repair?
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Posted on Jan 02, 2017
SOURCE: 2000 Ford F450 with V10
have you cleaned the throttle plate? this is done by removing air intake hose and spraying out with cleaner and wiping it down open throttle and wipe off the butterfly and bore. this will usually cure a stumble.
Posted on Aug 20, 2008
SOURCE: 1997 f150 4.6ltr engine has
thank you for responding, I went back to basics. New plugs began corroding on#3 & #7 cyl, causing a short(missfires).Tested the coil packs,& I recalled #3 cyl head was cracked, it was replaced with rebuilt head. As for the oil gauge flucuating, crank shaft bearings pitted and worn on #3 & #7cyl, due to the coolant(an apperantcommon problem..I took the truck in for an oil change,a ctc rookie put 5w30 instead of 10w30 as requested,in which caused the oil pressure to fluctuate. I dumped the the oil put 10w30 in and some lucas. 2 weeks later no ticking noises and no oil pressure changes.thankgod for lucus. its too cold to roll a set of bearings in the driveway. thanks again for your input. p s a 1997 f150 4.6ltr come with 2 sizes of serpentine belts, be careful of which one you install, we blew the bearings out of 2 new waterpumps,and for the last tip, the dealership uses a pair of vicegrips and an extra helping hand to set up the timing chains,that is what i was suggested to do by there top engine tech. prove me wrong. works like a charm.
Posted on Nov 07, 2008
SOURCE: 1997 Ford F150 4x4 5.4L
I would take the truck to an autoparts store and have the fault codes retrieved from the computer. Most stores will do the scan for free. I would lean toward a faulty throttle position sensor, but that's just speculation. The fault codes should narrow the problem down. Hope this helped and best wishes.
Posted on Jul 25, 2009
4.2 ltr missing. 2000 truck, f150. Changed plugs, wires. Ran great for 2 weeks. Started again. Changed coils. Got worse. Changed fuel filter, did nothing. Added injector cleaner and fuel cleaner, nothing. Checked EGR, o.k. It is getting worse. Had new gas about the time it all started.
Posted on Jul 08, 2011
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