Having problems with my FD it is completely built inside and out doesnt even have a mile on it its a single turbo race port on a power fc. OK the porblem with the car is that i cant even drive it down the road it goes to full rich on light throthle and wont go anywhere. ive changed everything from sensors, coils ,upper intake gaskets, fuel pump , fuel filter, harness, ecu,pic ups for timming, and even rebuilt a different engine an put it in with the same problems ive changed everything exept the car, NEED HELP.

 

Get it tuned. You said you have a PFC.

There is a dedicated PFC forum to help you out.

https://www.rx7club.com/power-fc-forum-47/

 

are tps and map sensors set to specs?
single turbo pfc map?
info on injector setup.

 

Has the PFC been setup or is it running the stock map? Do you have a 3 bar map?

So you swapped engines? Did you do a compression test on the previous?......

How much experience do you have with rotaries?

 

What size injectors are you running?

 

it was running 550 and 1200cc's and i installed the stock 550 and 850cc and it still does the same. I reset the computer and I downloaded a map and it still acts like that. Its not tunning I tried getting it tunned but they couldnt figure out the problem it was having.

 

I have alot of experience with rotary's I have a first gen with a turbo II swap and a miata with a turbo II swap and have built tons of engines. The compression on the first one was perfect I changed it thinking there might be a problem with it that was the last thing i did, The only thing I have not changed is the body harness and the shell lol. Could the fuel pump get too much voltage and over pressurize the system.

PLZ dont say it needs to be tunned its been taken to 2 shops

 

Could easily be a dis/misconnected sensor. How does it idle?

 

When you setup the single wiring harness, did you check continuity with each pin? Did you ensure each joint had a ground? I saw that you said you switched harnesses, a possible sensor misconnected could be it as well. Easy to do it twice.

 

If you absolutely can't figure it out, you may consider taking it to Peter Farrell's if your not too far. Last resort of course.

 

If u have a pfc , please post a picture of the sensor setting from the commander, and post on pfc thread

 

Word

 

ok ill get a pic the car idles fine

 

Have you tried going WOT yet? Don't do it if you haven't, but if you have, how did it run?

 

You are driving Satan's Spawn. Call an Exorcist.

 

i did it just floods out, my friend said that FC's have a low pressure relay and high for the fuel pump i wonder if the fd has the same and its running the walboro at really high pressure im going to buy a fuel pressure gauge and get an aeromotive regulator

 

did you also change out the secondarys?

 

What about the intake setup? Do you have an air filter? Is the airflow sensor good?

 

Theres a million things it could be. Be patient and go back threw everything and most importantly with a full set-up..........just go get it tuned

 

I think changing the FPR and getting the fuel gauge is a good start. You can also check all the sensors using the Power FC commander or datalogit if you have either.

 

yes i changed out the secondarys and did a sensor check everything but the fule temp sensor was good it marks 4.8i disconected it still does the same

 

Tow it to a reputable rotary shop. It seems that you're in over your head. I would tell you to bring it up to me but you're quite a ways away. I have a couple good ideas. One simple one is replace those 550's as it seems one if not both are sticking. Don't rule it out unless you've swapped them with a known good set as it's more common than you would think. Next would be looking into the wiring. I'm very sure its one of the two as your symptoms are the same as I had with one of my customers car's last week...

 

I changed the 550s with ones I sent to injector rehab no chang and I changed the engine harness the problem isnt the injectors it idles and starts fine its just running full rich when you give it a little throthle

 

It could be a sensor issue. TPS maybe....mine was bad and I had to change it, so we know the thing does fail.

 

Tps was changed and adjusted