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  1. General Discussion (Gen 2)
    Help please. My reliable 2004 LE has a blown front bank exhaust manifold gasket. Anyone had this issue ? As it's the front 3 cylinders is it a big deal to replace the gasket ? Thanks, Ron
  2. General Discussion (Gen 1)
    Hello, trying to fix a 99 Sienna for a friend. Friend was towing a trailer and pulled over to find fire under the vehicle. Towed it to my house and after looking under it, I find ATF (red) all over the bottom of trans/differential and lots of soot from where things were burning/smoldering. I...
  3. Problems, Maintenance, and Repair (Gen 2)
    I have a 2004 Sienna that I bought from small dealer back in 2010. Now that the mileage is 150K, decided to change the plugs but to my surprise, there is no bolts attached in the back, the firewall bolts. Can someone give me the part number or size of the bolts? I've seen from youtube that the...
  4. Problems, Maintenance, and Repair (Gen 1)
    Hi, Recently opened the Lower Intake Manifold for Knock sensors. Noticed that Intake Manifold gaskets were broken. Now, I bought after market Felpro gasket and put it back with the Intake Manifold, now coolant starts leaking from the water passage inlet of the gasket (confirmed). Please...
  5. Problems, Maintenance, and Repair (Gen 2)
    Intake Manifold Gasket Coolant Leak on 2004 Sienna? Anyone experience coolant leak from the intake manifold on their 3.3L Sienna? On our 2004 Sienna LE, there is a very small coolant leak that is either from the thermostat housing or somewhere in the valley below the intake manifold plenum. I...
1-5 of 5 Results