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  1. Problems, Maintenance, and Repair (Gen 1)
    I recently tried the AC and it wouldn't get cold I, just saw a .video on how to check and add refrigerant and was reminded to check the compressor clutch, sure enough its not spinning when the AC is on, it does move freely by hand though. One thing I tried to check was the 5A AC fuze under the...
  2. General Discussion (Gen 1)
    2003 Sienna LE FWD What is this wire? It's spliced into one of the ignition coil connector wire, I tried to trace that wire but unable to follow it all the way inside engine bay. This connection is poorly done and does not look factory at all. Bank 2 coil #6 No trouble codes.
  3. Problems, Maintenance, and Repair (Gen 2)
    I put in a used engine (supposedly less than 50k miles) a few years ago after faulty water pump lead to overheating which eventually lead to repeated coil misfires which ended up being blown head gasket. Now, on "new" engine which as far as I know has never overheated, I've been getting random...
  4. Problems, Maintenance, and Repair (Gen 2)
    With 133k miles the engine started running rough associated with a flashing check engine light. The spark plugs were changed at 120 k miles. I connected an OB2 and got a P0301 code for misfire number one cylinder which is the firewall passenger side cylinder. I bought an ignition coil , just on...
  5. Problems, Maintenance, and Repair (Gen 2)
    Hi, Last winter in Canada the number six cylinder coil needed replacing - The dash lit up like a xmas tree and the garage identified the code as P0306 (Misfire number six cylinder detected) We could barely drive the car when the problem happened and the garage said it's likely to happen with...
  6. Mods and Projects (Gen 3)
    I just had my coilovers installed last week. Everything was fine for a couple days, then started to get rattles and knocking coming from the rears. Took it back to the shop and he basically took it all apart and re-installed it. Same thing...was great for a day or two, and the rattles returned...
  7. Problems, Maintenance, and Repair (Gen 2)
    We've been having problems with our Sienna lately. The van starts to misfire and throws a few CEL codes including misfires on four of the six cylinders. Our independent mechanic concluded that the problem was likely with the ECU/ECM/PCM. The independent suggested working through the dealer since...
  8. Problems, Maintenance, and Repair (Gen 2)
    I lost a chunk of my right rear coil spring. I know that I have to unbolt the rear shock and then lift up rear then the spring should come out. I'm wondering how high do I have to lift it up for it to come out with a 3 ton jack. Or if it's even doable in my driveway. I don't know how I lost a...
  9. Problems, Maintenance, and Repair (Gen 3)
    Had a remanufactured short block installed now the garage is telling me the coil is cracking and the two year old battery is in need of replacing? This is the only garage that ever serviced the vehicle. At 119,000 miles should the coil need replacing. Today they added two more quirks. They can't...
  10. Problems, Maintenance, and Repair (Gen 2)
    We bought a used 2008 Sienna Limited AWD through a private sale. It has 44000 miles on it. Just one mionth into having it the Check Engine light and VSC light came on and has stayed on. Then, we noticed that the Check Engine light will begin flashing and when that happens you can tell there is...
  11. Problems, Maintenance, and Repair (Gen 2)
    So I got a fault code today of P035 which says the ignition coil 2 might be bad. Where is the ignition coil 2 located for the 2007 sienna? Actually, a map of where all ignition coils are located would be helpful. Thanks.
  12. Problems, Maintenance, and Repair (Gen 3)
    Had a remanufactured short block installed now the garage is telling me the coil is cracking and the two year old battery is in need of replacing? This is the only garage that ever serviced the vehicle. At 119,000 miles should the coil need replacing. Today they added two more quirks. They can't...
  13. General Discussion (Gen 3)
    Hey guys, anybody who lowered their sienna or went with coilovers willing to sell their stock XLE/limited springs? Pls. reply to this post or PM me. Thank you..
  14. Buy Sell Trade & Group Buys
    Looking for XLE/limited coil springs with or without shocks for my sienna ,hopefully there are some locally around chicago area so I can just pick them up.
  15. General Discussion (Gen 1)
    My 99 sienna started losing power and shuddering on a 3 hr journey recently. Eventually the CEL came on and stayed on after some intermittent appearances. I took it to the Toyota dealer and they diagnosed it as an faulty ignition coil based on the codes and switching the coil with another...
  16. Problems & Issues
    Hello all, Im in need of some help. We have a 09 Sienna and coming home one day the van check engine light started flashing and tithe traction control light and VSC light came on and the van lost power so I pulled over and turned it off to check out all the fluids and belts and everything...
  17. General Discussion (Gen 2)
    Hi All- We got our 2006 Sienna XLE earlier this year and I've been meaning to join for some time. Well, today was a good opportunity. My wife called me to tell me that the CEL was on and the car was idling very rough with a loss in power. I immediately suspected a bad spark plug or wires. She...
  18. How To Guides / Do It Yourself Instructions
    Anyone have any illustrated diagrams on how to gain access to the rear coil packs? It looks like I may have to remove the windshield cowl to do this?
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