So I bought a 3.4 swapped fiero and there is a box with 4 injectors in it attached to the wiring harness? Does anyone know why it would have this? I'm so confused. It also has a box with a 555 timer circuit wired to a switch, when the switch is on the engine doesn't run right but I think this defeats the passkey. The engine is a 94 Cutlass engine AFIK.
The 555 timer on a switch is almost certainly a homemade VATS bypass.
What ECU is in the car? That may explain why he has extra injectors wired up in a box... still a kludge but it sounds like it worked.
"It's your car. Do with it what you wish, but as you enter this unknown world you will need to invent the wheel all over again. For the adventurous and those that are backyard mechanics who have nothing but time you might like this. Most have plenty of frustrating moments and the process usually takes significantly longer then what anyone could imagine. The end result of this conversion is completely up to you." - Jon McCullough of BMCautos.com
what are the component values in the 555 circuit? that will determine what it's doing, and will give a good idea of why it's there.
1995 Monte Carlo LS 3100, 4T60E, OBD1 Conversion...for now, future plans include a 3900, T04E-46 (Knock-Off) turbo (For the 3100, ~T61 for the 3900), and a F40.
that is fricken weird... Even if it was the wrong harness with 4 injectors added that would make it a V10 lol... I have no idea why anyone would do that... I would also agree the 555 curcit is most likely for a VATS bypass. But IIRC the vats/passkey will let the car start for like 3 sec then dies... so it wouldnt make the car run bad it just wouldnt run. hard to say... where does the switch run to? (the 7th, 8th, 9th, and 10th injector lol). have you unhooked the extra 4 injectors? does the car run correctly when you do?
Shane "RedZMonte" 2004 Corvette Z06 Commemorative Edition-VIRGIN 1995 Monte Carlo Z34 14.38@101mph, 331hp/355tq
-Turbonetics T04E Super 60 Turbo, 2.5" Borla Catback, OBDII, 42.5# Injectors 2004 Subaru WRX STI -Lightly Modded (SOLD) 1994 Lumina Z34 -VIRGIN (SOLD) 1992 Lumina Z34-VIRGIN (RIP) 1992 L67 Lumina Z34 (SOLD) 1990 Turbo Grand Prix (SOLD)
maybe they are there to fool something into thinking there is a load on them?
1995 Monte Carlo LS 3100, 4T60E, OBD1 Conversion...for now, future plans include a 3900, T04E-46 (Knock-Off) turbo (For the 3100, ~T61 for the 3900), and a F40.
I was thinking VATS, but firsthand experience agrees with Shane (even though my experience was more like 1-2 seconds, tops), but what would require a load to work and make the engine run smooth? I would rewire the sucker, if it were mine, and get that jerry rigged crap out of there. No offense, Jerry
Originally Posted by TGP37
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