Have 92 F-150, 4.9L, w/sudden no injector pulse @ cylinders 1 & 3. Engine runs but only on the other 4 cylinders. When ground (via test light, for instance) is applied to ground wires @ injectors 1 or 3 for a few seconds, then removed, engine temporarily runs perfectly on all 6 cylinders for a few seconds, then fails again back to no pulse @ 1 & 3. So apparently there is a ground/pulse issue somewhere.A rebuilt distributor with new PIP has already been installed to no avail. EEC relay? EEC? What?
have the same problem?
Saturday, August 20th, 2011 AT 6:28 PM