Hello RedMeanie and all,
Glad to hear you recovered OK from that storm RedMeanie, we had Fay that went through Naples FL here last week, but we got lucky with very minimal damage. I have a few questions you guys may (or not) be able to help me with. I have the RedMeanie PWM installed and it functions fine. I have the RedMeanie dual-efie installed also, running the engine (5.7liter Vortec, 96 Suburban) on gasoline only, I get three clicks down (lean) from full-factory and the engine starts to stumble coming to a stop. But still no accelleration problems. SO, it is obviously telling the computer to cut back the fuel injectors. LED lights still flash and no service engine light. I did have to change the 470uF down to 100uF on the EFIEs (as suggested) because the warm up time was about 6 minutes, now is about 50 seconds. The 6 minute wait time had the computer richening up the mix trying to find a signal, just like RedMeanie mentioned in the documentation. Actually had black smoke from the tail-pipe, shorter warm up fixed that. HERE IS MY PROBLEM, as soon as I switch on the hydrogen booster, the EFIEs LEDs go out and the engine light comes on shortly after. The computer sets 4 codes, two for oxygen sensor 1 and 2 "no activity". And then two codes that say "bank 1 LEAN" and "bank 2 LEAN". This happens no matter where I set the 6 position rotary switch of the EFIEs. Is it possible the burn in the cyliders goes too lean too quickly for the EFIEs to compensate? The LEDs do NOT come back on until a few minutes after I turn off the hydro-boost, then they stay on solid for a few minutes before they start to flash again. But now I have no control because the computer is open-loop with the service engine light on, right? Also in the document it states the LEDs should stay lit when you rev the engine up and go off for a bit when you let off the throttle. With increased throttle, my LEDs flash faster but do not become solid lit. All bench tests were performed "exactly" as per the latest document with perfect bench results on both EFIEs in each step of testing. If anyone can help me determine which direction I go from here, I would be most appreciative indeed! Hopefully someone else has already overcame a similar problem and can help me with this one. Good day to all, as the testing continues................................
Mike, Florida
Glad to hear you recovered OK from that storm RedMeanie, we had Fay that went through Naples FL here last week, but we got lucky with very minimal damage. I have a few questions you guys may (or not) be able to help me with. I have the RedMeanie PWM installed and it functions fine. I have the RedMeanie dual-efie installed also, running the engine (5.7liter Vortec, 96 Suburban) on gasoline only, I get three clicks down (lean) from full-factory and the engine starts to stumble coming to a stop. But still no accelleration problems. SO, it is obviously telling the computer to cut back the fuel injectors. LED lights still flash and no service engine light. I did have to change the 470uF down to 100uF on the EFIEs (as suggested) because the warm up time was about 6 minutes, now is about 50 seconds. The 6 minute wait time had the computer richening up the mix trying to find a signal, just like RedMeanie mentioned in the documentation. Actually had black smoke from the tail-pipe, shorter warm up fixed that. HERE IS MY PROBLEM, as soon as I switch on the hydrogen booster, the EFIEs LEDs go out and the engine light comes on shortly after. The computer sets 4 codes, two for oxygen sensor 1 and 2 "no activity". And then two codes that say "bank 1 LEAN" and "bank 2 LEAN". This happens no matter where I set the 6 position rotary switch of the EFIEs. Is it possible the burn in the cyliders goes too lean too quickly for the EFIEs to compensate? The LEDs do NOT come back on until a few minutes after I turn off the hydro-boost, then they stay on solid for a few minutes before they start to flash again. But now I have no control because the computer is open-loop with the service engine light on, right? Also in the document it states the LEDs should stay lit when you rev the engine up and go off for a bit when you let off the throttle. With increased throttle, my LEDs flash faster but do not become solid lit. All bench tests were performed "exactly" as per the latest document with perfect bench results on both EFIEs in each step of testing. If anyone can help me determine which direction I go from here, I would be most appreciative indeed! Hopefully someone else has already overcame a similar problem and can help me with this one. Good day to all, as the testing continues................................
Mike, Florida
Can someone please take a stab at this and help me out a little? All replies and insights are welcome, even PM's, this REALLY needs to work. Thanks.................................Mike
I will absolutely post more later today, thanks guys.
Later............................................M ike
As RedMeanie stated, "The beauty of electronic signals....". Thanks to all you guys, I have learned alot these last couple months, still learning, still lovin' it!!
So I cut back my booster draw from 12 amps to only 10 amps. Then set the rotary switch on the third click, so I could go both ways with adjustment. I tuned VR1 to .100 volts and then tuned VR2 to output 1.15 volts to the ECM instead of 1.00. I am happy with the test drive just completed, even took it onto the interstate and drove 70 mph and then back through town. Check engine light stayed OFF the entire time and it ran as good or better than it ever did!
Comment