I'm stumped. I rebuilt the engine a year ago, 30 over, rv cam had the injectors cleaned professionally, all new pisots, rings, valve job,new timing chain etc. remove the smog pump and eliminated the egr. problem just started occuring recently. there is a momentary loss of spark while driving and is worse when there is a load or abrupt acceleration. I can tell its not a loss of fuel, unless its dropping an entire bank of injectors. I have replace the coil the wires the distributor the module, have looked at the wiring harness and found no problems also bypased the ecm relay. unplugged the condenser and that did'nt help. the inertia switch has been eliminated so thats not it. could the ecm cause an interuption of spark only for a moment like that and still work. also i have replaced the throttle position sensor . it seems worse when it warms up and appears to be getting worse as time goes on. any help would be greatly appreciated. thank you brett anderson
Jan 3, 2006 at 9:08 AM