I’ve noticed a slight pulsing while driving my 95 bronco 351W, at various speeds but definitely most noticeable when under a load like going up hill. Could this be the torque converter slipping Or the transmission? Truck has 138K on it
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Hey DingoI will definitely check for codes. I have had the bronco on the lift and the drive shaft seems solid and no play. The symptom occurs at all cruise speeds, more obvious under load no cruise control on. Plugs wires rotor cap and coil are of unknown age. Wires rotor and cap are not OEM. Cap and rotor have some spark erosion. First things first I will see what codes I can get it to put out and will report back
Wow that’s interesting. So two weeks ago I washed the engine compartment and after the truck would not start. I let it dry over night and it fired up with a little hesitation. I was planning in diving into checking for codes this weekend, but we have been hammered with tropical storms. Hope to get to it this week. Probably will just replace cap, rotor, wires and plugs anyways as their age is unknown. Any recommendations?Hey Dingo
Shorting plug wires or plugs will show up as a jerky hesitation most noticeable under light to medium load.
Commonly called fish bite in the drive-ability world as it feels like when a fish is biting at your bait.
A quick check is to get someone to put it in D (assuming automatic), and give it a medium load while you spray water from a squirt bottle, (like the nozzles you get with diff ****)
Spray directly at the plug/exh manifold area. You will know right away if your wires are bad. (Don’t load the engine for more that 15 to 20 seconds at a time or you will overheat the torque converter!)
Also, a new set of plugs is never a bad idea!
Cheers
Sounds like you are on the right track.Wow that’s interesting. So two weeks ago I washed the engine compartment and after the truck would not start. I let it dry over night and it fired up with a little hesitation. I was planning in diving into checking for codes this weekend, but we have been hammered with tropical storms. Hope to get to it this week. Probably will just replace cap, rotor, wires and plugs anyways as their age is unknown. Any recommendations?
Since I was in HS, I’ve been told Autolite plugs for Ford. So if that is still holding true, that’s what I’ll do. For the rest, I’ll probably just just a brand name if OEM is not an option. Thank you for the helpSounds like you are on the right track.
As far as brand goes, I don’t know what to suggest, there seems to be an alarming lack of quality across the board.
I am loyal to autolite spark plugs. As far as cap, rotor, and wires, my choice would be motorcraft (if available)
Good luck Dan
Cheers
Any time!Since I was in HS, I’ve been told Autolite plugs for Ford. So if that is still holding true, that’s what I’ll do. For the rest, I’ll probably just just a brand name if OEM is not an option. Thank you for the help
Wish I could post a video.