Purchased used engine from Jyard,(after driving the donor car up and down the road to make sure it ran good(with a legal junker tag BTW)). Drove my car with rod knock (ran fine other than knock) up onto lift, pulled engine, replaced with new engine, plugged everything in (everthing fit because i made sure i got the early 98 model like mine 5/98) and it will not start. it does not have the P.A.T.S. system, (it has little keys). I have fuel pressure at the rail, when i crank i get startup pulse to the injectors for 5 revolutions or so, then it drops out. There is no signal to the spark distribution block. I thought it may be the ecm, i stuck my ecm into my brothers well running taurus with over 300k, and it ran fine left it in for a week no problem, stuckit back in mine, nothing, I put a new crank sensor on because i broke it handling the engine, that is the only thing that is different. Both cars ran before this operation.
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Re: wont run after engine swap
Hello first thing check firewall ground to engine pass side if connected and good test ignition module if okay possible open signal on the spout connector check one other thing is the timing bypass chip near the distributor small plastic like a fuse size style usauly gray pull it out try to start with out it bypasses computors timing setting for manual adjustments goodluck
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Typically, on American made cars, there is nothing that would go with the pcm in a swap. If the wire harness and pin connector locations are the same in both cars, it should be a simple swap. You would have to see if re-programming the pcm is necessary. Not sure when that became a requirement.
Greg, you may have to transfer everything from donor truck to make the swap work tranny , computers, wire harness, fuse/relay center etc. Check the attached links,forum for Dakota engine swaps,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info." engine swap 4 7 to 5 2 or 5 9 Dodge Dakota Forum Custom Dakota Truck Forums
my 1988 towncar used to stop running on the open road at 70 mph after 20-25 miles of driving.......after sitting on the side for a 1/2 hr it was start right back up like nothing happened. After 2 frustrating weeks and 3 different mechanics I found out through another towncar owner that the ignition coil is getting hot and is causing the engine to shut off...Lo and behold 28.00 and 20 mins solved the problem. Just invest in a good Ignition coil from NAPA or SUMMIT PARTS
A donor truck is a good idea, but the transmission, bell housing, cross members and transmission mounts will all be the same as long as you dont go from manual to auto or opposite. motor mounts will be different tho. i put a manual trans off of a 94 F-150 with a 300 6-cyl into my 91 bronco with a 351 V8 (5.8L) and used all the mounts and crossmembers off of the 94. only thing is the petal assm was different due to body changes. and the 5.8L also has a 11" clutch **** and the 5.0L and 4.9L both use a 10" disk. the bad thing is you will have a ton of stuff to change like the ECU, and engine harness and and other then the Ypipe and converters the exhaust will work. such a project is not for the faint of heart.
You need a donor vehicle, or a good junk yard. You will need an engine from a 95 up V6. You will need the complete engine, wiring harness, ECU, and harness. You will need the radiator and motor mounts, You should go ahead with the transmission swap also, being the 4 cyl.trans will be a bit weak for the v6. Look for the 3.4 v6 if you can find one. This swap from a Camaro is a good choice. The engines from the a Comaro are a bit beefier. What ever car you get your engine from, be sure to get as much wiring and all electronics as you can. Now if you do not have any Emissions problems where you live you will not need the ECU's or the wiring to go with them. You can run a carb engine and the swap will be a lot easier. You can get a manifold from Summit and a carb. and have plenty of power then. Good swapping.
Totally forget about changing an automatic car to standard. That would be a very parts & labor intensive switch and is out of the question. If you have the same year and size engine this will be an easy swap. Just remove the donor engine leaving the bell housing and transmission in place in the donor car. Remove the engine from your car leaving the bell housing and transmission in place. Bolt the donor engine to your old bell housing and you are all set. Mark all connections as to not get confused. A digital camera will be of help in taking photos of how things are hooked up.
yes you will have to change the computer. the rear diff wont have to be changed if the front diff has the same gear ratio.the entire front end suspension will need removed so tha you can mount the four wheel drive differential this most likely will require custom modifications. and the whole process will be very time consuming and expensive