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The Previa's all came equipped with chains...a good idea because of the mount position of the engine.
Some people will recommend changing the timing chain at a certain mileage, but unless you start having problems with the engine, you will probably never have to change it. My Dad has close to 200,000 miles on his 93 Previa with the origional chain.
Telltale signs of worn out timing chains are: Rough idle.
Sluggish performance and poor economy.
Sudden engine performance change including the inability to start the engine.
Intermittent backfire through the intake manifold.
Inconsistent ignition timing or a clattering noise coming from the front of the engine.
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Toyotas in the family/next of kin:
1982 Corolla Wagon, 1989 Corolla DX, 1991 Previa LE, 1993 Previa LE,
1993 Pickup, 1994 Corolla DX, 1995 Avalon XL, 1996 Camry XLE, 1998 Avalon XL,
1998 Sienna CE, 1999 Camry XL, 2000 Camry XLE, 2002 Tundra, 2003 Tundra,
2003 ES 300, 2004 Camry XLE, 2005 Tacoma
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Discussion area for the (discontinued) Toyota Previa.
its easy to pull thishead off 1st get a manual, and remember always tie the camshaft sprocket to the timing chain, i use two wire ties and then the chain cannot move without turning the sprocket. be very careful!alot of this may not be clear at first, but this will save you time in the end! to replace the chain this job will become more difficult so if you dont have to then dont remove it!
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