Originally Posted by nate2630
I found the repair kit and it should be here tomorrow! I hope it works. Mine was bad and damaged the cams could not go over 2500 rpm.
I don't doubt what you're saying, but cam damage is probable but not necessarily a cause for not being able to get about 2500rpm. If the OPDA was put in wrong so that the pulse does not match in the computer, the computer will limit the rpms to protect the motor. For example I could go outside and turn my OPDA so it isn't aligned correctly and my rpms will not go above 2500. I can then turn it back and it will be fine.
When you say it was bad, who looked at it? What did it do when it went bad?
Did the gear break?
How many miles were on the Jeep?
Even when you put a new OPDA in, if the cam is bad, the motor will not run correctly if at all. Please have a look at the OPDA failure thread. It may help you understand how it works and it might help you tell us what is wrong.
Lastly, when you replace the OPDA, it will likely fail again. The upper bushing is not properly lubed and will heat up and bind the shaft. There is not difference in the one that came installed back in 2005 and the ones that are on back order now in 2011.
If anyone is reading this go to the above link. It's got a ton of pics as well as a thorough explanation of the problems and home brew solution. If you have a question let us know. This problem can be fixed if caught early enough.