I have a '93 Grand Voyager with about 146k miles on it. It's developed
a terrible loud engine knock that is progressing. When it started
months ago, it was only when the engine got to normal temp but now it's
from the time you start it up and getting louder all the time. It
sounds like a diesel going down the road. Could it be a rod or maybe
an oil pump? It still runs great smooth with no loss of power.
Like Glenn says, we need to know what engine you have.
Since you have a Grand, you have a 3.0 or a 3.3. I don't know if the
3.8 was available for 1993. Early 3.3L engines had a problem of rocker
tower cracking upon reaching high mileage. This would create a knocking
Without hearing the noise the most common problem was the rear rocker arm
tower breaking off. If the camshaft bearing spun it will prevent oil from
getting to the tower and causes this. you would have to remove the valve
cover and crank the engine to see if oil is getting to the tower. assuming
this is your problem
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.