May be nothing more than an exhaust leak.
Larry
> wrote in message
oups.com...
>I swear I'm gonna blow this thing up... Same 1996 3.3L caravan that I
> replaced the fuel pump on and mysterious tensioner issues.
>
> Last night while coming home from work I noticed the engine started
> making a knocking sound. I'm not sure what rod knock sounds like, or
> even what causes it, but this may be it.
>
> I only hear the "knocking" sound when I accellerate. If I'm idling, or
> if I'm cruising under 1500-2000rpm, I don't hear it. If I have to
> accellerate even mildly from a light, I hear it.
>
>
> I know thie description is vague, but if anyone can help with this it
> would be appreciated.
>