Hi, my EA falcon 3.9MPFI does the same thing, it blew my muffler apart when it started playing up, I came across this thread while looking for a problem with my car. Heres my story;
- My car always ran good then cut out (tacho turned off, 0). I worked out that it stopped because the distrubitor was getting hot (sloppy bushes i
think), once it cooled it worked fine again.
- I tried fitting another dizzy (lol off a 3.9CFI) and no go (research showed me the internal chopper was different (MPFI ones have a shorter blade on one)).
- I bought a new distributor and coil package to suit my needs from Repco, OEM=$600 vs Generic=$300, I chose the cheaper one.
- I fitted the two new items to manufacturer specifications and the car started first turn, it went well for about a week when my bro pointed out a rattling sound at idle, it was coming from the dizzy, I stopped the engine then checked the oil, it was half on dipstick, when it was topped up it ran without the rattle (i think the damage was done already).
- I continued to go to work everyday (15Km away) and the car always plays up around half way there or back, unless I warm up my car for 10-15min before.
- I researched more online and many people said my symptoms were something to do with the TFI module (on side of dizzy on EFI engines), sometimes it wont fire at all in the mornings, but I thaught I might fiddle with the plug on the distributor while starting (i got a remote starter thingy), while pushing the plug in further with ignition on, I heard a click, then I tried starting it, it started and ran until I let go of the plug. It is plugged in all the way too.
- My thaught is that when the first dizzy overheated, and maybe the current one too, it got that hot that the tabs in the socket on the TFI module got hot too and made the plug get hot, possibly opening up the contacts to an open circuit.
- Still bugging me I got to the contacts on the plug (by sliding out the red plastic thingy on dizzy plug on wiring harness side) and tried to close them back up to make a better contact with the TFI. It worked for a bit and I still have the same problem.
I put in a new timing chain also when I put in the dizzy from repco, but I noticed that the oil pressure regulator for the chain wasn't there, feeding lots of oil to the chain and maybe less to the dizzy causing the bushes to wear and get hot. Does this sound like it could cause these problems (oil pressure in dash shows normal)? BTW all of the distributors have an oil port around the neck going to the shaft, but there isnt a oil port anywhere in my engine in the same area. How does the distributor get lubricated?
Anyway I hope my spiel helps you figure it out, or you might have an idea for me.
Tuesday, November 13th, 2012 AT 2:51 AM