Rough Running 88

wallyp;12499 wrote: Some "back to basics" comments:

Secondary ignition faults (plug wires, plugs, coils - everything from the primary connection at the coils thru the plugs) ....

That is a very useful summary Wally. Perhaps it could be in the Tips section for general use. I will certainly bookmark it for myself, altho I hope I never need it...

Martin, I have added tags to this discussion so that it can be accessed easily through search. I will try to do this more often with tech threads. Perhaps the moderators could assist in doing this.

Be glad to Austin, that is a new one for me. I will try to keep an eye out for these kinds of opportunities. The better the search, the quicker someone is helped.

+1

For sure will not replace LH for the above reasons.

I resistance checked Temp II sensor and found it to be OK. It is original equipment and may be replaced after the new O2 sensor goes in.

Has anyone heard of harmonic balancers having issues? I heard, don't recall where, that the balancer hub (?) can slip, moving timing marks. Nearly rotated the car on its stands trying to break the crankshaft nut loose. Dr. Scholls Wart Remover was used to freeze shaft threads. Nut broke free but would that harm the balancer?

I think I've asked this question: Are there dynamic balancers on the crank? Don't think so but it feels that way. Stuck dynamic balancer that is.

Timing gears and belts were changed moving the onset of these vibrations by about 500-700 rpms sooner. Will be heading back here after sensors.

One more thing; after the timing belt procedure, the flywheel occasionally makes contact with the starter gear after it disengages from the flywheel. Just a "ching". Nothing more.

Crankshaft nut was pretty tight. 1" drive breaker bar with a 5' pipe on that. Dr Scholls too. Never been up at 290 ft/lbs. That sound right to anyone?