Crankshaft Pulley Bolt May Come Loose on Toyota Tacoma

Problem Description and Possible Solution

Some engines have had the problem of the crankshaft pulley bolt coming loose. This will make a rattling noise as the engine idles. Our technicians tell us that the pulley bolt should have a thread locker applied and then retorqued.

Problem Data
RepairPal Verified
Average mileage: 139,857 (70,000–205,000)
Engines affected: 2.4L 4 Cylinder, 2.7L 4 Cylinder, 3.4L V6
4 model years affected: 1995, 1996, 1997, 2001
11 people reported this problem
Viewing 1 - 4 of 4 comments
Bottom pulley fell off, very cold, approx 5 degrees F., about a mile after leaving home with it.
Pulley fell off completely, bolt and washer are gone. It looks like the pin broke.We haven't fixed it yet.
engine making thumping noises then finally a hose fell off
Loss of charging and oil pressure, Both lights came on.