Join Date: Dec 2002
Location: Shepparton, Victoria
I have finally finished the rebuild of the old 3.9. Long problem filled process it was! But anyway, now I have a few problems left to sort out. My main ones are the transmission not shifting correctly, and the temperature not staying stable.
Lets start with the temperature. I will be driving along and the temp guage shows the temp just on the bottom of the normal operation box, which is where it used to sit. Then, as I keep driving along, the temp seems to rise in about 15 seconds to just above halfway, then drop again to just below the box in about 10 seconds, then it will start all over again. The thermostat was brand new. I replaced it again this morning thinking it was faulty, but it still does the same thing. I have bled all air out a few times, but there never seems to be any.
Next is my transmission. I have got it a bit overful i think, but that hasn't caused it to play up before. I have been just gradually putting my foot down (as I have replaced rings), and it changes at about 2200RPM, which means round town at 50-60 kays i am driving round in 2nd. It never used to have this problem either!
I am running out of ideas, so any help on either question would be appreciated...
EA Fairmont Ghia : 3.9L MPFI, 2.5" cat back sports exhaust, K&N panel filter. Pioneer head unit, pioneer 4" three way fronts, Pioneer 6" 3 way rears, 2x 12" subs, blue interior light.
My main pride and joy : '76 XB Fairmont GS, 250CI, 140,000 Km and all stock.... for now! (Factory air-con on the way)