just put on the new slp runners that i got last month and had to unplug the injectors on the drivers side. i think i may have got two of the injectors mixed though. ive tried running the car with the plugs both ways and has made no differance in the running of the car. it runs fine and the runners have really made a big differance in performance! what i need to know is if the plugs for the injectors are the wrong way round will it break anything?

 

No, it will not affect anything. The TPI computer is a "batch-fire" system, which means it fires all 8 injectors at the same time. Each bank of four has its own fuse, but they are hooked together inside the computer.

 

thanks dude!! you've put my mind at rest!

 

Hey I was wondering the same thing. I think I got a few of my plugs mixed up on one side of my car too. Are you sure all eight injectors fire at once? Why do some guys call these car seqencel fuel injection ?

 

The only 3rd gen that came with sequential fuel injection was the '89 TTA. All others are either batch fire (TPI and MPFI) or alternating injector firing (TBI).

RBob.

 

Don't sweat it.
The TPI's are not sequential.

 

all of the injectors on my passenger side stopped working today. I just pt on SLP runners, a new IAC, TPS and a few other things. what the heck is going on and how do i fix it if the injectors are not bad, I heard you saying something about a fuse? were is it?

 

Should be two 10A fuses in the fuse box: INJ1 &INJ2. Fuse box is above drivers left leg.

There is only 1 driver in the ECM, but a separate connector pin and wire for each set of 4 injectors. If it isn't one of the fuses, it may be the wire/connector for those 4 injectors.

RBob.

 

Uh-OH! That's almost as big a problem as mixing up the spark plugs, or worse, mixing the left and right turn signal bulbs.

Even in a SFI, it will run, but not optimally. In your case, it doesn't even matter if they are switched left to right.