Timing belt
are you sure its not rusted? cause me 92 Plymouth acclaim's oil pan rusted, and i had to get a new one. it only cost like 3-$400.
It is possible that the speedometer on a 1997 Plymouth will only work intermittently because the gear is worn out. Sometimes dirt can get up into the area where the speedometer cable is housed and cause excessive wear to the gear.
I know that whenever I get gas - I SLOW DOWN!
Yes.
A leak somewhere in the lube system or engine. Parts, components, and seals wear out over time. You'll have to get under the car with a flashlight and see if you can isolate the source.
This could be the dummy lights that come on when you start the car, but if it stays on, your engine could just need some oil or you may be on a steep hill. Low oil pressure due to low oil level in the engine; very THIN oil; meaning the wrong oil is in the engine.
air leek
This engine could have burnt rings in it. There also could be an old leak which is running down on the manifold which would cause the engine to smoke.
Once the cause of the code is repaired the light will turn itself off. You need to have a trained technician check and repair the system.
The check engine light on a 2000 Plymouth Grand Voyager will come on when an error is detected by the vehicle's computer. The cause can range from low oil to mechanical problems or incorrect timing.
Could be the TPS, it will cause it to idle high and low and make the car become sluggish, but a vehicle will run without one, but it will run very rough.
Code 17 is engine cold too long. The normal cause is a failed thermostat.