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Old 01-14-2016
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I am: A. Deperdussin
Join Date: Apr 2012
Location: San Carlos, CA
Vehicle: 1993 Ranger
Drive Type: 4x2
Engine: 3.0
Posts: 51
Total Props: 0
Clunk from under front, right side

My 1993 Ford Ranger XLT, auto. trans., 3.0 liter V6, developed some time ago a clunk.

It happens in sync with engine vibrations (rocking at idle), usually when started from cold. It is not a rattle. My guess is that part of the exhaust system is hitting the chassis. It goes away after the engine warms.

The problem developed after extensive work on the emissions system, during which the catalytic converter was replaced. All flexible engine mounts (two in front, one under the transmission tail shaft) have also been replaced.

I've crawled underneath but can't see well enough in the confined space to see evidence of interference.

Probably I should take my truck to a shop with a lift and have a more relaxed look.
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Old 01-15-2016
iTrader: (1)
I am: Ron Dean
Join Date: Jan 2014
Location: Vancouver, BC
Vehicle: 1994 Ford Ranger
Drive Type: 4x4
Engine: 4.0
Posts: 4,733
Total Props: 88
Pop the hood, start engine then put it into Reverse with foot on the brake, see if you hear the clunk as trans engages and watch for engine movement.
Now shift into Drive.
Engine movement should be minimal with new motor mounts, so exhaust shouldn't really move much.

Shift back a forth a few times, give it a little gas in gear to see if engine lifts, showing loose motor mount.
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