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Justin
In addition to the PFC not having enough time to figure out what is what yet, I guess you are still running the 850's. You are going to have to lean them out in the idle area. One way you can do this is by taking fuel out across the board below 1000 rpm. How long were your 550s sitting around? Were they cleaned just before you intsalled them, if so how long was it between the install and the time you tried to fire it up? The reason I am asking is that I just found out that if you let a set of newwly cleaned injectors sit around for over a couple of weeks, the solvent acts as a glue and locks the pintles in place-------> Sounds like your situation Jeff |
Originally Posted by jeff48920' date='Mar 7 2004, 08:00 PM
Justin
In addition to the PFC not having enough time to figure out what is what yet, I guess you are still running the 850's. You are going to have to lean them out in the idle area. One way you can do this is by taking fuel out across the board below 1000 rpm. How long were your 550s sitting around? Were they cleaned just before you intsalled them, if so how long was it between the install and the time you tried to fire it up? The reason I am asking is that I just found out that if you let a set of newwly cleaned injectors sit around for over a couple of weeks, the solvent acts as a glue and locks the pintles in place-------> Sounds like your situation Jeff I might need you to give me a hand with the tuning... https://www.nopistons.com/forums/pub...#>/biggrin.png I'm happy to pay. https://www.nopistons.com/forums/pub...IR#>/smile.png I had the injectors cleaned about 6 months ago... MIGHT just be it! The 850's work fine though! |
Originally Posted by rx794' date='Mar 7 2004, 07:28 PM
Member Boostn7 can help you with this. The reason your PFC is doing this is when you have a ported motor, the fuel cells fall under a different spot on the map at idle(remember ported motors make less vaccum at idle, also at the same time fuel atomization lesses with a bigger port due to less airflow velocity at low rpms with a ported motor) that will cause the PFC to hunt because the fuel cells in that range need to be adjusted, the only way to correct this is by tuning the idle properly with a Datalogit.
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I am having the same damn problem, it is starting to drive me crazy https://www.nopistons.com/forums/pub...1047683358.gif It won't stop for me, I have let it idle for over 30mins and still nothing.
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Originally Posted by toddp31' date='Mar 7 2004, 09:27 PM
I am having the same damn problem, it is starting to drive me crazy https://www.nopistons.com/forums/pub...1047683358.gif It won't stop for me, I have let it idle for over 30mins and still nothing.
On the club, I've read EVERY thread related to this and I'm not convinced it a simple fix.. Although everyones cars do eventually smooth out, I do think tuning can make it easier as said earlier.. I need to look into it more. I've unplugged the idle control motor (which is said to fix it) and got no better results. I've let the car idle for 30 minutes and nothing as well.. I have yet to mess with the air bleed screw but I'll get to that when I get a little more information. https://www.nopistons.com/forums/pub...#>/biggrin.png |
Using PFC turn off idle-Ign control. see if that helps. Next turn off O2 f/b control. If that doesn't help, pull about 25% of the fuel out below 3000 RPM (that's primary only land).
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When installing the PFC did u cut the 4 wires or did you pull the pins out. Mine was doing the exact same thing until i cut the wires. But it is a learning mode on the PFC. It can take awhile!
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Originally Posted by jeff48920' date='Mar 8 2004, 10:45 AM
Using PFC turn off idle-Ign control. see if that helps. Next turn off O2 f/b control. If that doesn't help, pull about 25% of the fuel out below 3000 RPM (that's primary only land).
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Originally Posted by r-magic' date='Mar 8 2004, 11:05 AM
When installing the PFC did u cut the 4 wires or did you pull the pins out. Mine was doing the exact same thing until i cut the wires. But it is a learning mode on the PFC. It can take awhile!
You know, now that I'm on the subject... Does anyone know where the stock water temperature gauge connects in the car? I'd imagine it doesn't go to the ECU, but just to the cars internal harness? I accidentally cut the fucker and can't find where it goes. I do remember it connects to a little slip connector at the harness toward the firewall... But after that? |
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Interestingly enough. I think the Coolant Temp Sensor does go to the PFC, I will check for details in the electrical manual tonite. BTW if you did cut this and it does go to the PFC, you will have a really rough idle.
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