1990 F150 5.0L 4x4 EOD Started hesitating at times on the highway. Thought the tranny was slipping. Tranny check out good. Kept getting worse until it would hesitate shake and you could tell it there was something wrong.

Ok 175k miles burns oil, thought it had finally given up. I figured I would try some things first. Replaced plugs, looked good. Replaced wires, cap, rotor. Still no change. Replaced fuel filter and regulator. No change. Good fuel pressure so it is not the pump. Pulled codes. No error codes only the normal operating codes. Pulled and cleaned throttle body, was sticking anyway. No change. Do not have cats so they are not plugged. Now I'm starting to think that the motor has gone bad. One more thing, compression check. Started on the drivers side, all good and equal. Checked the passenger side and it showed one is a little low, most likely guides. But............


When I pulled off the brand new Accell spark plug wire from, of course the last plug, the boot came off with the wire but the metal clip was still on the plug!!!

A quick fix with pliers and electrical tape and what do you know. This thing runs great. No hesitation, no vibration, nothing.

Just because something is new does not mean that it can not be defective. The wire was broke before the metal clip. This was a defect from the factory as these were complete wires not make your own.

Double check even when new. That would have saved me a few bucks if I had.

 

why did you not get motorcraft wires?

yes, new parts can be dfective from anyone.

get accel to send you a new wire or replace the set.

 

The parts store was having a sale on Accel. I've used them before with no problems. I planned on trying to get it replaced but not sure if I can. No receipt and no proof that it was done at the factory. FYI...keep all receipts.

 

if you have the box, or even if you do not, call accel and they will fix the problem.