Miss fire

I have an 18 Tacoma supercharged magnesum I’m getting error codes 355,353,351 have checked all ignition coils and retuned still acting like only 3 cylinders any help would be appreciated

 

https://www.tacomaworld.com/threads...acoma-unboxing-install-diy-dyno-video.693562/

Big thread on the Magnuson S/C. Probably best chance to answer questions and find users' brains to pick. Goes way beyond the install in the thread.

 

I would find a shop locally that is willing to work on it. There is only so much you can diagnose from the other side of the keyboard. Depending upon how many miles are on the truck I would start off by putting new spark plugs in it. I would swap coils between banks and mark what cylinder they originally came from. If the issue doesn't go away, move or you still have misfires on that one bank then I would start looking for damage to the wire loom. I wouldn't be driving the truck till it is fixed either. Also what happened just before the misfires started happening?

 

The truck ran fine just pulled in and parked and got back in and started and that’s when it done it

 

How many miles on the truck and how long since supercharger install?

 

Idk what those codes are but sounds like one entire bank is misfiring. Any rodents? Intake leak?

 

Guessing damaged wiring harness to the injectors or coils on that side. Or an install error and something was never fully plugged in

 

The truck has 53000 and I’ve had the supercharger on since about 35000 it starts idles a couple times it ran fine til I put in gear and it started sputtering again and I couldn’t hardly get it up the drive I drove up the road at about 1500 rpm any more than that it cut out like it couldn’t get gas

 

Maybe a vacuum leak?

I don’t have a supercharger installed but from your description of idle is ok but once in gear and going then issues, sounds like when vacuum goes to boost under load ecu trips.

If in idle and it’s fine, then keep in neutral and rev it a little to see if can go past 1500 rpm.
If it does then sounds like vacuum or something not seeing boost.


I have only worked on Turbo cars before, so I might be wrong since I have never worked on a supercharged engine.

 

I will check I’ve had a garage looking at there stumped also not Toyota but a speed shop so if they can’t figure it tomorrow I’m bringing it home and start replacing the plugs and checking connections