I just bought a 93 LS this summer and I have noticed a few things wrong with it. However, my main concern is that each time I am in the range of 60-65 MPH (3100 RPM) the car begins to vibrate heavily. The vibration is present all the time at this specific speed and I have noticed the hood shaking. The car seems to be lazy sometimes when accelerating and the transmision gears down (its an auto)immediately after I remove my foot from the accelerator. I notice that I begin to decelerate at a considerable rate. I have not changed the transmision oil yet and the service records from the previous owner indicates that he hadn't done that for at least a couple of years also. Somehow I think it may be alot more than just changing the oil. The car idle is way to high at around 1300.
Here are a few facts about the car.
117,000 miles
New distributor (installed last year by previous owner)
New engine oil (synthetic put in last month)
There are no oil leaks in to the spark plug wells.
The stock wire set is still in place.
The CV boots are still in good condition.
Engine does not shudder when reving at park at any RPM
I think I'll get the TPS replaced. I have read that the TPS can cause all sorts of engine trouble so I'll just play it safe with a new one. Is it possible that I have a problem with my drive shaft or could it be a bad transmision? Do you think a mechanic has a good chance of diagnosing this correctly? I appreciate whtever help you guys can give me.
Thanks, Ray
Here are a few facts about the car.
117,000 miles
New distributor (installed last year by previous owner)
New engine oil (synthetic put in last month)
There are no oil leaks in to the spark plug wells.
The stock wire set is still in place.
The CV boots are still in good condition.
Engine does not shudder when reving at park at any RPM
I think I'll get the TPS replaced. I have read that the TPS can cause all sorts of engine trouble so I'll just play it safe with a new one. Is it possible that I have a problem with my drive shaft or could it be a bad transmision? Do you think a mechanic has a good chance of diagnosing this correctly? I appreciate whtever help you guys can give me.
Thanks, Ray