2006 Tacoma 1GR-FE Engine Swap

Did that when swapping a new (used) JDM engine into my kid's WRX. There was enough slack in the wiring to the on-plug coil packs that you could swap them front to back....which of course I did on one side of the flat 4. It started but ran like crap.

To the OP....I haven't read through all 14 pages.....but after I got the coils straightened out on that engine, it still was misfiring. I would have bet a zillion $ it wasn't the sparkplugs....but after a lot of sleepless nights I put in fresh plugs and that fixed it.

Good luck.

 

I appreciate it. I did replace the plugs, new coils too. Are ya'll thinking that I could have 3 and 5 swapped?

 

I'll be damn. 3 and 5 were swapped. I started it & it died after I swapped them. However, I've disconnected the batt for a reset to see if it'll relearn.

 

Well, that didn't do it.

 

damn bro. ive been following along this entire thread and every time i see you post i hope its good news.

I admire the work and determination. keep it up. im sure you have learned a lot

 

One less problem to worry about now.

 

Still following the thread. Wishing you best of luck with it. Going to be some satisfying for you when you figure it out.

 

Is the engine properly grounded too? Seen some issues like that before.

 

Did you verify no injector connectors were swapped?

 

I was gonna look at that too.

 

I've checked everyone I could find. Something like 24.

 

Yup, they're good. Thanks @Dm93 for posting the schematics!

 

Have you checked for any other large vacuum leaks around the engine? Using the vacuum hose to ear method. As if it were a stethoscope.

 

I've done everything I can think of to find vacuum leaks short of smoke test. I'm waiting on a new fuel pressure regulator.

 

I am just rack my brain what else it could be.

Have you pulled the passenger valve cover to inspect for sludge?

 

I have. I cleaned both the inner and outer intake manifolds.

I cleaned them and replaced the gaskets.

 

Someone mentioned faulty ECM?

 

Anything is possible.

But what about the valve cover, for a health check?

 

How do you test?

 

You would have to swap them out. However, the new one would need to be coded or programmed to work with this vehicle.

Other members can give a better explanation.