Engine question...

After reading about the wonders of Seafoam, I removed my EGR this weekend and gave it a thorough cleaning, and enjoyed smoking out the parking lot at my apartment complex at 10 p.m. Friday night after putting some down the inlet to the engine. No wonder I was getting a DTC about insufficient EGR flow, it was DIIIIIIIIRRRTY!

I also poured some into the crankcase as I'm having the oil changed out tomorrow and figured it won't hurt.

In trying to get the smoke cleared, and the oil mixing, I floored it while sitting in the parking lot. I can't seem to redline it, the car won't let me get past 6000 rpm. I guess that's a feature, not a malfunction.

What I am concerned about is...it would only stay at 6K for about 10 seconds, then would slowly drop to 3K where it would stay until I released the throttle. Is that a feature or malfunction?

My other cars don't do that, they stay put.

If it's a problem, what's the cause?

Thanks!

-Douglas

UPDATE: 2000 Passport LX 4x4 (3.2L, no mods)

What is the year and model engine of your rodeo?
I have 97 with a 3.2L and it It will Red line to over 8000, I havn't held it that high, but I have held it at 5500 for quite some time.