Re: 91 Sable Stumble Issues
The plug wires, cap, rotor, fuel filter, plugs, & coil were all replaced within the last year.
I was doing some checks last night... even stopped by a local Autozone to have the codes
checked... only codes present were - Bank 1, Bank 2 lean.
I talked with one of my neighbors who's a mechanic, and he told me to check for possible
unmetered air intake... since a lean condition means more air than fuel... I looked over all the
intake parts and even sprayed some carb cleaner around the intake parts of the engine looking
for a vacuum leak... none found.
I stopped by a local tranny shop and explained the symptoms and we went for a test drive.
He felt exactly what I was feeling and we got to talking about the car's history and he
came to the conclusion that the CATs are plugged (they do have 160K miles on them).
I went back to my neighbor and talked to him about it and he says that it's possible... so
he's having me bring the car in to check for back pressure.
Also, while checking things over, I found that the connector for the electronic control
of the clutch packs had a little bit of seepage in it which I cleaned out very well and put
some dielectric grease in the connector.
So that's where it stands as of now... I'll know more after the CATs get checked for back pressure.