Hum, my 93 LC with 230k on it is behaving quite strangely.
I’m not sure how to describe it so I can do a search.
Well first of all at about 65 to 70 MPH the front end shakes moderately in OD. Now if I down shift to 3 it almost totally goes away. It is most notable on hills, going up them of course. So this doesn’t seem to be a speed/RPM related problem and it will coast like a dream at any speed.
Normally I would attribute this above problem to the transmission slipping, but here’s the curve ball, it also stumbles and shakes at idle (Trans engaged) to ~2200 RPM. I can work around DD by keep the OD off and manually shifting through the gears. Now I would attribute this as a problem in the lower RPM range, so now I’m thinking it’s a lack engine power to turn the transmission efficiently in OD, I wonder why just at lower speeds.
My other truck is a real power monster (500 RWHP), so it’s hard to compare, but I thought that these cruisers where a low RPM beast, this is not the case for me. I do see people wishing to tow 5000lb boats and such, but I fear making it across an intersection much less towing., so does anyone else feel a major lack of low end power from their LC?
Another tale tale sign is a check engine light, but it resets it’s self between start-ups and doesn’t always illuminate per my will. Is there an O/D cheat to read this for, AutoZone will check OBDII but it isn’t a hard code and my LC is pre-1996 (no OBDII), so there has to be another diagnosis method for this?
I got the shakes, lose of power, and can’t get around very well, should I see a doctor or prepare to rebuild everything under the body?
Any help would be appreciated, even just a global place to start would be fine and dandy.
I’m not sure how to describe it so I can do a search.
Well first of all at about 65 to 70 MPH the front end shakes moderately in OD. Now if I down shift to 3 it almost totally goes away. It is most notable on hills, going up them of course. So this doesn’t seem to be a speed/RPM related problem and it will coast like a dream at any speed.
Normally I would attribute this above problem to the transmission slipping, but here’s the curve ball, it also stumbles and shakes at idle (Trans engaged) to ~2200 RPM. I can work around DD by keep the OD off and manually shifting through the gears. Now I would attribute this as a problem in the lower RPM range, so now I’m thinking it’s a lack engine power to turn the transmission efficiently in OD, I wonder why just at lower speeds.
My other truck is a real power monster (500 RWHP), so it’s hard to compare, but I thought that these cruisers where a low RPM beast, this is not the case for me. I do see people wishing to tow 5000lb boats and such, but I fear making it across an intersection much less towing., so does anyone else feel a major lack of low end power from their LC?
Another tale tale sign is a check engine light, but it resets it’s self between start-ups and doesn’t always illuminate per my will. Is there an O/D cheat to read this for, AutoZone will check OBDII but it isn’t a hard code and my LC is pre-1996 (no OBDII), so there has to be another diagnosis method for this?
I got the shakes, lose of power, and can’t get around very well, should I see a doctor or prepare to rebuild everything under the body?
Any help would be appreciated, even just a global place to start would be fine and dandy.
