One problem related to engine exhaust system has been reported for the 2003 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Toyota Sienna based on all problems reported for the 2003 Sienna.
Our 2003 Sienna van (Toyota) has begun throwing blue smoke out the exhaust. We took it to a mechanic that told us that it's a valve,ring sludge problem in the motor . He said it's been happening to this particular model . I researched it on google and found this website from other owners of Siennas. From what I understand Toyota has not been willing to fix this problem and has in fact found a "loophole"through an acknowledgement of the problem. So, here I am with my complaint. Hope that you can help us out as I do not have the funds to buy a new engine. Thank you.
| Engine And Engine Cooling problems | |
| Engine Knocking Noise problems | |
| Radiator problems | |
| Catalytic Convertor problems | |
| Engine Exhaust System problems |