Bad omp?
#1
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Bad omp?
Can someone tell me if the omp in my 2002 fd3s is working or not? logged a video of the car starting showing the voltage in the adaptronic modular ecu
#2
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I can't make anything out on the screen of your video. IIRC the FD OMP works on 1 - 5v and is both load and rpm dependent. Without load (just raising rpm) I think it'll only go a little over 4v. And it fails to 2.5v. On a stock ECU any one of three related codes also puts the car into limp mode.
Last edited by Sgtblue; 07-22-19 at 03:57 AM.
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jonahau (07-22-19)
#3
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I can't make anything out on the screen of your video. IIRC the FD OMP works on 1 - 5v and is both load and rpm dependent. Without load (just raising rpm) I think it'll only go a little over 4v. And it fails to 2.5v. On a stock ECU any one of three related codes also puts the car into limp mode.
When I turn the key to the on position and when I start the car the voltage_Servo is reading 2.3V, these means my omp is bad then?
Also these can make my car to be consuming more oil and be smoking on the tailpipes? I was trying to figure why my car is smoking and consuming oil (lot more than usual), the engine is brand new mazda oem from irp and no external leaks.
#4
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Does voltage change at all with rpm, or does it stay at 2.3v? If it’s unchanged then yes, it sounds like the OMP is bad. And smoking/high oil consumption would likely result.
I doubt the new short blocks come with a new OMP so you’re using the one from your old engine...correct?
I doubt the new short blocks come with a new OMP so you’re using the one from your old engine...correct?
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jonahau (07-22-19)
#5
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Does voltage change at all with rpm, or does it stay at 2.3v? If it’s unchanged then yes, it sounds like the OMP is bad. And smoking/high oil consumption would likely result.
I doubt the new short blocks come with a new OMP so you’re using the one from your old engine...correct?
I doubt the new short blocks come with a new OMP so you’re using the one from your old engine...correct?
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johnrx2 (10-19-19)
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jonahau (07-22-19)
#7
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#8
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I checked again today and after warmup the voltage did move from 2.3 at startup and warmup to 2.08 at iddle and oscillating between 2.08 and 2.15V while driving, Im breaking inn the engine so most of the time im in 3k rpm range and no boost.
Did my omp is really bad or could be some tunning issues? I have the adaptronic modular already tuned from the previous engine.
Did my omp is really bad or could be some tunning issues? I have the adaptronic modular already tuned from the previous engine.
#9
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I don’t have a magic wand to wave thru the internet over you engine bay. Voltage and continuity checks are set out in the Factory Service Manual. You should have a copy by now and do your own checks. If you still have your stock ecu you could even plug that back in and see if it goes into limp mode and you get a cel with one of the three codes related to the OMP.
That said, while I’ve never closely monitored the MOP on my PFC commander, it sounds like your’s isn't working as it should.
That said, while I’ve never closely monitored the MOP on my PFC commander, it sounds like your’s isn't working as it should.
Last edited by Sgtblue; 07-23-19 at 05:45 AM.
#10
I had the same problem. Mine is a 97 16bit. Same modular ecu. Omp constantly wide open. The ecu is to blame. I kept fouling plugs and had oil coming up the intake runners.
I sent mine in for repair and they confirmed as much.
Disable the omp in the ecu and premix for a couple of tanks to see if it makes a difference.
I am no longer using this ECU.
I sent mine in for repair and they confirmed as much.
Disable the omp in the ecu and premix for a couple of tanks to see if it makes a difference.
I am no longer using this ECU.
#11
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I had the same problem. Mine is a 97 16bit. Same modular ecu. Omp constantly wide open. The ecu is to blame. I kept fouling plugs and had oil coming up the intake runners.
I sent mine in for repair and they confirmed as much.
Disable the omp in the ecu and premix for a couple of tanks to see if it makes a difference.
I am no longer using this ECU.
I sent mine in for repair and they confirmed as much.
Disable the omp in the ecu and premix for a couple of tanks to see if it makes a difference.
I am no longer using this ECU.
Did your OMP end up being faulty or was it fine when you went to a different ECU? I'd assumed my OMP was trash..
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CREEPENJEEPEN (07-28-19)
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