Guest |591| Posted March 26, 2011 Report Share Posted March 26, 2011 ok so i just got a new fuse box and started to wire up the different circuits, currently i have 2 of them 1.gauge circuit which includes my boost/AFR/ECT/OIL press/ Boost controller/ Turbo timer. This circuit is only fused with a 10 AMP fuse, grounded at the fuse box ground terminal 2.Injectors, Ls2 Coils, Stand alone circuit which includes just those. This circuit is Fused with a 20AMP fuse and is ran off a 40Amp relay. I have the power side of the relay coil wired in parallel to 2 other relays " which are currently powering nothing, but one of them will power a fuel pump" this goes for the ground side of the relays coil to. the switch side of the relay is then powering the Injectors/Coils/and stand alone, the two grounds off the vi-pec and ls2 coil "sequencer ground" are wired parallel to the ground bus at the fuse box, and i have a separate lead going from the LS2 coils "ground near coil" but it's wired to the ground bus at the fuse box. "only because i dont have a ground strap wired to the body and engine of the car yet. The problem. When i go to test the Injectors it causes my Gauge circuit to go crazy "the boost controller turns on and off with every pulse and the AFR gauge bounces up and down, and the turbo timer turns off and it sounds like the pulsing from the stand alone is going to that." when i pull the gauge circuit fuse i can still hear a ticking noise "like an injector firing" inside the turbo timer. So then what i did was i just fully disconnected the ground for the gauge circuit and tried again, when i told it to test inj. pair 1 it then caused the stand alone to go offline "or at least it lost USB signal" and I think the relay started to flick on and off. Currently the relays coil side aren't wired to fuse box ground i just temporally ran the wires directly to the battery. battery was on the charger so i was getting 13-14V I Triple checked the wiring and there shouldn't be any shorts. This problem happens when testing the Injectors but it is alot worse when checking the Ign. coils could the problem be 1. the coils grounds are both currently wired to the same spot as the vi=pec and gauges? 2.Because i have 3 relay coil side's wired parallel? Here are two diagrams i quickly drew up to show you the circuit Quote Link to comment Share on other sites More sharing options...
rayhall Posted March 27, 2011 Report Share Posted March 27, 2011 The ground wires on the ignition coils are like transmitter aerials. It is very important that they as short as possible and go to ground on the engine. If they are long and bundled with other wires going to the ECU, you will get interference. Another thing I notice is you have the ignition coils signal grounds connect to the coil ground. The signal ground needs to be connected to the signal ground on the ECU. Ray. Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 27, 2011 Report Share Posted March 27, 2011 i guess i dont understand the last bit to the answer about the signal ground, i thought the signal ground goes to the same ground as the stand alone. thats how i was understanding it, the other coil ground was to be near the coil "on the engine" as you stated. How about this, what pin number on the vipec are we talking about "signal ground" Quote Link to comment Share on other sites More sharing options...
rayhall Posted March 27, 2011 Report Share Posted March 27, 2011 This is the wiring for the coils. Signal ground or sensor ground, is GND OUT (pin A24 and B22 on the V88) Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 27, 2011 Report Share Posted March 27, 2011 This is the wiring for the coils. im rockin ls2 coils but its the same thing but backwards so ground "as short as possible on engine" Signal Ground "still at a loss where does this go.. pin A24?" Trigger "stand alone ign output" 12V " ignition power" Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 27, 2011 Report Share Posted March 27, 2011 i see you edited it last second cool i was right pin A24 FTW! lol well that is probably part of my problem then, will fix that probably tomorrow then. RAY thanks again for you help, you've taught me once again Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 27, 2011 Report Share Posted March 27, 2011 so you dont think running all 3 loads on 1 relay is a problem though? and 20amp is good enough for the fuse? Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 28, 2011 Report Share Posted March 28, 2011 bump Quote Link to comment Share on other sites More sharing options...
rayhall Posted March 28, 2011 Report Share Posted March 28, 2011 One relay will be okay. Ray. Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 29, 2011 Report Share Posted March 29, 2011 ok thank you again. for whatever reason i like to have injector problems lol, but i've fixed the ground to A-24 and that solved the interference issue I was having, but no when testing injector pairs 1-4 "inj1" and 3-5 "inj3 they arent firing, but pairs 2-6 "inj2" is. settings are peak 2amp hold .5amp multi-point group and inj 1-4 for active drives. wiring is correct, and all seem to be 13+V, i also made sure to check the battery this time lol, and they seem to be getting a signal to the plug. while i was typing this out i came up with the idea to swap the injector plugs really quick to a non firing injector and i went to test it and the injector still didnt fire i swapped injector 2's plug to injector 1. does this mean i've fried my new injectors Quote Link to comment Share on other sites More sharing options...
rayhall Posted March 29, 2011 Report Share Posted March 29, 2011 What injectors are you using and what is their ohms resistance. Ray. Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 29, 2011 Report Share Posted March 29, 2011 PTE 880CC the company states 2 ohms. I measured both the working and non working injector and got 2.2 ohms Quote Link to comment Share on other sites More sharing options...
rayhall Posted March 29, 2011 Report Share Posted March 29, 2011 I would use these settings. Peak = 4 amps Hold = 1 amp What you have selected is too low. Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 29, 2011 Report Share Posted March 29, 2011 Ok i will try these settings in a little, what should i consider max peak and hold? i was thinking about turning the settings up but i just didnt want to push it. And also besides being able to hear them open is there any other way of knowing that im at the right settings? Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 29, 2011 Report Share Posted March 29, 2011 i've attempted peak 4 hold 1, still nothing. pair 2-6 are still the only working ones Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 29, 2011 Report Share Posted March 29, 2011 i've also contacted PTE about the settings they say there they use 1.13Amps peak .998 hold Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 29, 2011 Report Share Posted March 29, 2011 and also i dont know i didnt try this but i just swapped the working one to inj 1 plug and it got signal, so this tells me wiring isnt the issue, and im starting to believe that i finished off 4 injectors its just odd that they measure out 2.2ohms Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 29, 2011 Report Share Posted March 29, 2011 and just because i like to post alot of things for visual purposes, i was just able to get 1-4 injectors working, how did i do it you may ask well as i turned up the peak and hold to 4 and 1 i could barley hear a pulsing sound, so i got curious and wondered maybe they were getting stuck from testing it dry all these times, so i tapped them a couple of time with a wrench while it was testing them and then tada i got 1 going so i went to the next and tada it worked to oh so happy, i gotta start getting fuel going though Quote Link to comment Share on other sites More sharing options...
rayhall Posted March 29, 2011 Report Share Posted March 29, 2011 I should have remembered you are using a V44 with 2 x 2.2 ohm injectors and not the V88. The V44 can drive 1 x 2.2 ohm injector, but not two. If you have damaged any thing it will be the drivers in the V44. The latest V44 has 4 amp injector drivers. Even one 2.2 ohm injector exceeds the amp ratting, but will be okay, but not two of them. This is from the manual... A 2.2Ω fuel injector is wired to an injection channel, the battery voltage is 13.5V. How much current will the injector draw? Using the above equation - Battery Voltage / Injector Impedance = Max Injection Current 13.5V / 2.2Ω= 6.1 Amps Now with 2 x 2.2 ohm, the calculation is... ((13.5V / 2.2Ω) * 2) = 12.2 Amps You are going to have to use other injectors or add a resister pack and select saturated. There are many big injectors available that are high impedance. Ray. Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 29, 2011 Report Share Posted March 29, 2011 i thought due to the newer version of the v44 i have i would'nt require the resistor pack.. Quote Link to comment Share on other sites More sharing options...
rayhall Posted March 29, 2011 Report Share Posted March 29, 2011 The older V44 had 2 amp injector drivers and could only drive on high impedance injector. The new V44 has 4 amp drivers and will drive one low impedance injector or two or more high impedance. Ray. Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 29, 2011 Report Share Posted March 29, 2011 so my choices are then 1. attempt to trade the low impedance injectors for high ones 2.wire in resistors. what size resistors? any online stores you can point me to? difficult? Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 29, 2011 Report Share Posted March 29, 2011 as for the resistor, the car has a resistor pack seen here http://www.cygnusx1.net/Supra/Library/T ... S=FI&P=111 would the stock resistor pack work with the vipec and injectors? Quote Link to comment Share on other sites More sharing options...
rayhall Posted March 29, 2011 Report Share Posted March 29, 2011 This is from the manual.. Two 2Ω fuel injectors are wired to an injection channel each with a 4.7Ω ballast resistor, the battery voltage is 12V. What is the effective impedance of each fuel injector? Effective Injector Impedance = Injector Impedance + Ballast Resistance = 2Ω + 4.7Ω = 6.7Ω How much current will each injector draw? Max Injection Current = Battery Voltage / Effective Injector Impedance = 12V / 6.7Ω = 1.79 A How much current will flow into the injection channel (drive current)? Drive Current = Injector 1 Current + Injector 2 Current + Injector 3 Current + … = 1.79 + 1.79 = 3.58A Based on this you need a 4.7 ohm 50w resistor each pair of injectors. Mouser or Digikey would sell them. Quote Link to comment Share on other sites More sharing options...
Guest |591| Posted March 29, 2011 Report Share Posted March 29, 2011 WOW THANK YOU, im happy you are willing to teach me so much. As always thanks again Quote Link to comment Share on other sites More sharing options...
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