> Things I have tried : Put trans fluid in the rotor housings and let it
> sit for 36 hrs. The eng started up and ran great for 20 miles. Turned the
> eng off for 15 to 25 minutes then restarted. The eng started running rough.
> No power, idles at 500 rpm's and will not clear up. While the eng was
> running rough I removed a plug and added trans fluid one rotor at a time to
> assure there is not a compression issue. Each time I restarted the eng,
> other then a lot of smoke for a moment no changes. I replaced the 02
> sensor, no change, unplugged the tps no change, unplugged the BAC no
> change, Sprayed the complete eng down with carb cleaner looking for a
> vacuum leak no change.
> This eng runs great cold and continues to run great until it is shut
> down. Sits for a short period of time then runs like dirt. I am at my witts
> end

 

Save yourself some time and compression test. Typical symptoms of a tired motor needing a rebuild.

 

Only 30k miles. When the eng is cold has all kinds of power and runs great. Intermittent while running rough with low power the eng will clear up and run great again. the eng is not tired. Dumping fuel i think. Has to be another answer

 

30k original? Or 30K rebuilt?

Also, there is no point in being stubborn about doing a compression test. 99% of the time it is FREE, throwing parts at it is not free, and it starts to get frustrating when you keep throwing parts at something and it doesn’t fix it

You may be right, it may NOT be a compression issue, but why not have the free peace of mind that its not the problem?

 

Original, This eng will run great cold. Drive a while, Turn the eng off wait 20 min. Re-start, no power low idle. Have to wait for the eng to completely cool before I can drive it. Sometimes while driving the eng will act up as well.

 

The other possibility is a bad water thermo sensor thats on the back of the water pump

The FSM shows how to test it