danny dan

The 3.4 swap is well worth it. I finished one up on my 92 Itasca about a month ago. Cost of my donor vehicle, $600 and I already sold parts off it and at this point got it for almost free. I did all the labor myself. The 3.4 swap has been done over and over and over as you probably know. It is a proven engine that has will go 200k plus on the factory timing belt and is an excellent candidate for your swap. Don't get me wrong, I've built a lot of 22re engines and done more timing chain/head gasket repairs than I could ever count. I absolute love the 2xr series for what they are . That being said, the 5vz is not a snail. They respond well to a few bolt on mods and are easy to supercharger. I can cruise at highway speeds with no problems and then some. I can pass big rigs all day long if I want to. It pulls a steep grade almost like a passenger car. I built a '93 Chinook 4x4 conversion several years back. The stock 22re in it (with the exception of an 82 Supra AFM and exhaust) performs well, but honestly, it takes a minute to get to cruising speed. The 5vz swapped Itasca will smoke it all day long... I have a near new 4 bolt main sbc 350 & a 4l60e I could have slammed in there. But that just didn't seem right. There are several options out there. Just my opinion, so take it with a grain of salt.

Prior to the 3.4 swap, that wire would have gone from the P terminal as you mentioned to the negative side of the coil. The tach should at least be moving even if not correct. There is a potentiometer on the back if I recall for adjustment. You will need to wire the 10k resistor if not using a 3.4 t100 cluster. All the pickups and runners used cable speedo from 89-91 and electronic speedo from 92-95 with the exception of the t100. I have a resistor I can mail you. Many thanks for the tips on the swap btw. I have about 900 miles on my 3.4 swap into my 92 Itasca. 13-15 mpg so far. Runs like a champ. Here is an under hood picture of mine as a reference to anyone considering the swap.

I welded a bung into my pan, no codes. Alternatively, Geno's garage sells an adapter that basically just secures the sensor to an exterior trans line. You could temporarily rig your temp sensor in a similar fashion to see if the code stops setting.