Cubes Posted February 20, 2005 Share Posted February 20, 2005 Darren Dude.. I did connect wire53 back up as some one had previously cut yours. You still don't get a speed reading (PFC and the DASH) because your speedo drive cog has fallen off. You will once that has been sorted out, well you should as how else would the ecu know when to cut once you hit 180-185km/h. Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1218909 Share on other sites More sharing options...
R31 POWER Posted February 20, 2005 Author Share Posted February 20, 2005 I don't know what up with it Jeol,I did the loom install and we never cut the speed wire and the speedo wire is all connected to the ecu/dash.The speedo works in the R31 dash so yer who knows. Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1219216 Share on other sites More sharing options...
Bl4cK32 Posted February 20, 2005 Share Posted February 20, 2005 Is their a wire off the rb20 gearbox that goes to the ecu to get a speed reading? Ive changed to the rb25 box, and dont have all the plugs wired up..... Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1219388 Share on other sites More sharing options...
Cubes Posted February 20, 2005 Share Posted February 20, 2005 The only wires my rb20t box has going back to some where appears to only be a reverse light. There is 1 plug that doesn't appear to plug in to anything. R31Power, You are 100% sure that some one previously hasn't cut the ecu's speedo wire? I'm assuming the R32's get their speed reading from the dash once its converted from the mechanical cable to the dash. I'm dropping a PFC in to my 32 this week so I will find out if the R32 does indeed report a speed reading on the PFC H/C. An inspection of the R32's wiring diagram could answer the question. Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1219443 Share on other sites More sharing options...
Roy Posted February 20, 2005 Share Posted February 20, 2005 You will get a speed reading on your PFC hand controller. And my understanding is that the ecu gets its speed signal from the dash once it has converted a signal off the mechanical speedo cable. Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1219490 Share on other sites More sharing options...
R31 POWER Posted April 11, 2005 Author Share Posted April 11, 2005 Ok I think my TPS has shat itself.I've tried from 29mV right upto 49mV and when I back off it does'nt!!!it slowely decreases the injector duty cycle.At all different rpm and settings it's different grrrrrr.What have you RB20 boys got yours set to. Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1293608 Share on other sites More sharing options...
Cubes Posted April 11, 2005 Share Posted April 11, 2005 Mines set on 46mv or what the pfc reads .46v. It occasionally flicks between .46v & .47v. I always get 0% duty cycle when decelerating. Only when cold will it pop or run on a little while decelerating. If I set any lower than .46v I get a slight flat spot on the tip of the accelerator. Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1293658 Share on other sites More sharing options...
R31 POWER Posted April 11, 2005 Author Share Posted April 11, 2005 Good shit Joel.Yer mine was set at 46mv I think before I fiddled with it but nearly everytime I backed off it would spike the duty cycle then go 0.0%.Now it wont decelerating on any setting straight away. You no how the shaft coming out of the T/B is a moon shape and that fits in the TPS,well do you think it's flogged out?I might give it one layer of tape coz i'm sure it was fairly loose. Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1293998 Share on other sites More sharing options...
Bl4cK32 Posted April 12, 2005 Share Posted April 12, 2005 yer, i got mine set to 0.46 on the commander. i have noticed with the larger injectors if i change early and dont rev out gears (cos mr policeman is near, and im trying not to let the bov go woosh ) i usually end up getting a backfire pop out the exhaust.... Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1294707 Share on other sites More sharing options...
R31 POWER Posted April 12, 2005 Author Share Posted April 12, 2005 I fiddled more and it's still farked!! and I even tried another TPS.I put crc in the connectors just to make sure and it's still not loving it. Some times backing off it will be ok but other times it still pushes the car.I puller the cooler pipe off and looked in the T/B and it's spotless and not sticking.I'm running out of ideas guys. Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1295710 Share on other sites More sharing options...
R31 POWER Posted April 15, 2005 Author Share Posted April 15, 2005 Ok it's set at .46mv and it's fine *confused*the only things I have done is push the plug in the ecu more and unhooked the commander,but I done the above at the same time.It idles dam good to Moral of the story is to make sure the ecu plug is pushed in fully Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1301780 Share on other sites More sharing options...
R31 POWER Posted April 20, 2005 Author Share Posted April 20, 2005 Riddle me this.Cold morning,water temp hits 30degrees and the revs start to fall(as it should) but then goes back up?It will vary from 1000rpm right upto 1400rpm :bs!: then the good part I pull the commander plug from the ecu and it idles fine :Bang: Once the motor gets warmer it's fine but these cold mornings are giving it greif I know the commander should only be unplugged once the motor is off but cbf and this idle prob is killing me.It's not hunting coz the injector duty cycle is'nt going to 0.0% then back up,so what does this mean?? Also note my battery is in poor health,could that be a prob. Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1309794 Share on other sites More sharing options...
Sydneykid Posted April 21, 2005 Share Posted April 21, 2005 Riddle me this.Cold morning,water temp hits 30degrees and the revs start to fall(as it should) but then goes back up?It will vary from 1000rpm right upto 1400rpm :bs!: then the good part I pull the commander plug from the ecu and it idles fine :Bang: Once the motor gets warmer it's fine but these cold mornings are giving it greifI know the commander should only be unplugged once the motor is off but cbf and this idle prob is killing me.It's not hunting coz the injector duty cycle is'nt going to 0.0% then back up,so what does this mean?? Also note my battery is in poor health,could that be a prob. Hmmmm that's weird, unplugging the Commander shouldn't make any difference. What voltage does it show at idle?"cheers: Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1310536 Share on other sites More sharing options...
R31 POWER Posted April 21, 2005 Author Share Posted April 21, 2005 Excellent a reply it's showing 13.8volts at idle and the water temp is at 73degrees.It only revs up and down when the water temp is under 50degrees or so with the commander plugged in.Very strange. Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1311360 Share on other sites More sharing options...
Sydneykid Posted April 21, 2005 Share Posted April 21, 2005 Excellent a reply it's showing 13.8volts at idle and the water temp is at 73degrees.It only revs up and down when the water temp is under 50degrees or so with the commander plugged in.Very strange. My first guess would be the standard wiring harness plug is not inserted into the PFC perfectly. I have seen this a number of times, it's the first place I would check. Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1311670 Share on other sites More sharing options...
Scooby Posted April 22, 2005 Share Posted April 22, 2005 I know a guy who had chronic problems with his PFC and found loose wiring in the controller. Unlikely but it might be worth as look. Link to comment https://www.sau.com.au/forums/topic/57089-pfc-help/page/2/#findComment-1312703 Share on other sites More sharing options...
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