Ok, this makes absolutely no sense to me but, I am glad to say the problem seems to be resolved. I feel a little relieved, aggrevated, and stupified all at the same time.
It seems the problem was something I had problems with in the past. Basically it boils down to the EGR. In the past I have had problems with the bottom (22m) nut coming loose due to vibration, well this caused no noticable problems except the slight exhaust leak sound while driving. I was out driving the other day and noticed the same exhaust sound I had heard in the past (at this time is still have the erratic rpm guage, abs light, occasional downshift, and engine stumble) so I decided to pull over and tighten the bolt, since I learned from past experience to carry the required 22m stubby with me. Much to my suprise I noticed the 2 allen bolts for the pipe between the egr and the s/c were also loose at the EGR block. Unable to tighten these out on the roadway, I drove home with them loose still (with the same problems I had been having). Soon as the engine cooled off enough I tightened them back up. Well its been 4 days later and everything is completely back to normal, no erratic rpm guage, no abs light, no downshifting, or stumbling.
How a simple air leak can cause soo many different issues, I'll never know, but I am glad it was an easy fix. Just wanted to let everyone know, if any of the symptoms are ahowing, check the EGR fitting closely.
"You can live your life in a thousand ways,
but it all comes down to that single day,
when you realize what you regret,
but you cant relaim and you cant forget."
----Trans Siberian Orchestra
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Originally Posted by Ruflyf
