Hey guys, I usually hang out in the diesel forum, but I ran across a 4.6 in a 96 Lincoln today at work that has me scratching my head.

It seemed easy enough, throw a tune up at this Town car. I put plugs, wires, PCV, air and fuel filters on it. I noticed it seemed to have a slight miss under load when I first ran it in the shop, but now after putting all these parts on, it runs smooth. Only catch is now it has this full second of dead spot when I hit the throttle and the CE light is on. My scanner only goes to 95 so I couldn't plug in and check it out. Does this sound like a common 4.6 with 80k on it type problem?

 

It would be interesting to see if it has a P0121, P0122 or P0123 code. It could be the throttle position sensor.

 

I would also try cleaning the MAF sensor.
Your scanner should be able to pull codes from this car too as it's pretty much the same as a 95.

 

Or you can take it to a local parts house and have them check it for free. Might want to break out the phone book before you drive all over town though.

 

I'll give it a try, maybe I can fool the scanner into thinking it's a 95. Yeah, it does sound like the TPS.

 

It's possible that your '95 reader is OBDI only (EEC-IV), that is an ODB-II car.... (EEC-V).. Those scanners run $120~$200 depending on the brand and functions.... THey are great to have tho, they're usniversal, as all the computers are the same between brands.

 

Mine is a Snap-on scanner. It just has the 95 cartridges in it.

I was able to hook it up using S for the VIN year instead of T. It had 2 codes in it, neither of which seem to help me out. There was a four digit code with the key on engine off (I forget the number now that I'm home). No codes with the engine running, and a "too rich bank #2" code in the history. In the live data I was able to see the TPS working, so I can't imagine that's it. I wrote the codes down and cleared them, then went for a drive. The CE light never came back on, but it still has a dead spot that would drive the Pope to drink!

The strange part is, I talked to the owner today and he said it never did this before. I also noticed on the test drive that the car spark knocks quite a bit when you have the pedal down past 3/4. What could I have disturbed just doing plugs, wires, and filters to cause this?

 

Is the fuel pressure regulator still plugged in on the driver's side?

 

The regulator is on the pass. side on this one and it's still plugged in. I think this car is really going to drive me crazy.