2005 Toyota Corolla Q&A
2005 Toyota Corolla Question: My Corolla vibrates alot in all gears, but less in park and neutral.
All motor/transmission mounts are new and correctly installed. PCV valve new. New Iridium plugs. Clean throttle body and intake tubing, new air filter and oil change. Transmission fluid replaced with castrol import. Belt Tensioner and serpentine belt is new. Please let me know opinions. Vibration can be felt through fenders, floor, and steering wheel. Have checked exhaust system. No check engine light. Engine vibrate violently, but idle is proper at about 750-800 rpms when warm. - panik
Can't say for certain until inspected unfortunately. But, do you know if the engine mounts that were installed are OEM (from the dealer), or aftermarket? I have seen some new aftermarket parts be worse than a broken OEM part. I would definitely take it back to the installer that's been doing your work to have them double check/make sure nothing was accidently left loose or if they installed a faulty mount. - p r motorsports
P R Motorsports is on the right path but I may have another suggestion. Sometimes in certain cars putting specil plugs in them cause misfires. Try just putting good old champion plugs in or stock toyota plugs. Also check that all the plug wires are pushed on all the way and snap when pushed on. The snap can't always be heard so you may only feel it. - gmc4me
I had the same problem with my 2004 corolla. Toyota dealer in Palmbeach florida cleaned fuel injectors and throttle body ($280)...the problem remained..after googling, i found that MAF sensor needs to be cleaned every 30K miles. Google for MAF cleaning, it will cost you less that 10 bucks and you can do it yourself. Just be sure to use MAF sensor cleaner and nothing else. - iambored