Tach not working/DTCP0336

[kc9dre]

Here is some history on my van. It is a '98. It has 112,000 miles on it. At 107,000 miles or so, I replaced the engine with one from an '04 with 18,000. I had it installed by a "professional" When the new engine was installed, he called me to tell me that I had a bad engine. I heard the engine run before I bought it, but was told by the "pro" that the 04 cam was different and would not work. So I bought a cam and had him install it. Still he called back and said that the engibne would not run. I began looking over it as well. I found two harnesses that looked identical BUT, the wire colors didn't match properly, SO, in fromt of the "pro" I swapped them. Engine ran with a proper idle and no balck smoke. Check engine light was on. he cleared the code, but I noticed tach wasn't working. So I drove van home. check engine light comes on that there was the P0336. Replaced Crank sensor with a new one, same error. took it to the dealer for the CASE relearn. Charged $98 and still a check engine light and no tach. The dealer did give a little helpful information though. Said the van was idleing at 9800 rpm. I did the math and found the cam and crank sensor "could" be swapped. I swapped the crank sensor on the harmonic with the cam and cleared the code. the P0336 went away, still not tach. I suspect that a relearn is still needed but I refuse to take it to the dealer.

My next question is this, I plan to do my own work from this point out. What software/tool package can I get that will do a CASE relearn? I am tired of being taken by these "professionals and dealers"

[maxwedge]

In defense of all involved parties, there was no way an 04 engine was a direct swap with an 98, there are/were subtle differences in harnesses and some sensors as you found out, few mechanics would have direct experience with this type of semi custom job. You certainly did your research here though. A Tech11, high line Snapon, and Genisys scanners can do this relearn, but there are prohibitively expensive. Do some more research on the tach issue, may not be a relearn situation.