AFter new Ign mod and crank sensor, my 2.5 ran fine for 4 days, still had just a slight fluctuation at idle. Had a bit of trouble of stalling when putting into gear when not all the way warmed up, but wasnt bad.
Then on Friday after a decent cold start and a 25 mile drive, first time i stopped and put it in park, engine rpm's jumped up to what would have to be 2500 (no tach) But when you would put it back in gear, idle was normal, it wasnt the engine load holding it back either, it would actually idle slow as it should, back in park, fast again. In gear, fine as can be, i thought this was so weird because how can a tranny make the rpms drop back to normal???
Anyway, when i got home i check was was just the oter day "cleared codes" and it had a new one. A code 34. MAP sensor reading low" or some thing to that effect. Bought one, cleared codes, ran the car, idles perfect in and out of gear, cold starts good, no stalling...
Just wanted to post this if someone else has the same weird "tranny in gear idles ok" that this thing was doing.