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Old 04-20-2004, 06:38 PM   #1
benjaminetanyahoo
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Default Help!!!!!! Pulled Some CELS

Can anybody help with these CELs I pulled last night?

P0420
P0172
P0107

Setup
2002 RS EJ22T with SOHC heads
Ludespeed Stage 1 with J&S Safeguard
Walbro Fuel Pump
Stock ECU

Can anybody help me remedy these things or get them cleared to get my engine running decent at idle?

I'm stupid with this J&S Safeguard and the codes pulled have either to do with misfire or timing or MAP which it all controls. Help
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Old 04-20-2004, 06:51 PM   #2
ExecNav
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01 Impreza RS-T

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Catalyst System Efficiency Below Threshold

Fuel trim malfunction (A/F too rich)

Pressure Sensor Circuit Low Input

-Brett
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Old 04-20-2004, 06:59 PM   #3
benjaminetanyahoo
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Anybody got some relatively cheap fixs for them? or Explain what I need to do to accomplish and clear those CELs? I am pretty dumb when it comes to this and learning as I go along.
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Old 04-20-2004, 07:18 PM   #4
ExecNav
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Do you have catless pipes? That could be the P0420. A MIL eliminator will fix that. Or maybe the fact that your running rich is causing your rear O2 sensor to give you a cat inefficiency. And maybe the pressure sensor circuit low input is causing the rich conditions. What kind of fuel managment do you have? RRFPR? AFC? Anything? Maybe it just all needs to be tuned.

If you know where the pressure sensor wire on the harness is, check the voltage there. That would be a good place to start since it's basically first in line.

-Brett

Last edited by ExecNav; 04-20-2004 at 07:27 PM.
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Old 04-20-2004, 07:30 PM   #5
lotusTT
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for the 420, do the mechanical CEL fix. Costs less than $10. Search for mechanical CEL fix and you'll find it.

For the pressure sensor input one, I'm guessing either your voltage clamp is set to high, or you have something wired wrong.
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Old 04-20-2004, 10:05 PM   #6
phattyduck
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Could it be too much fuel pressure overpowering the stock (?) regulator at idle? Are you running any other fuel management?

-Charlie
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Old 04-20-2004, 11:41 PM   #7
benjaminetanyahoo
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Something wired wrong? It's running off the stock ECU

Last edited by FutureSTIer; 04-21-2004 at 06:32 PM.
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Old 04-21-2004, 12:41 AM   #8
lotusTT
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Yes, the J&S has a voltage clamp for the MAP sensor (assuming you have the newer version 2, which you must if you have no other management). If you unplug the J&S without reconnecting the wires to the ECU, the car won't start.
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Old 04-21-2004, 01:14 AM   #9
benjaminetanyahoo
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I have the newer version 2 and I am looking at the diagrams right now for it. I understand the whole unplugging and needing to replug it in back to the stock ECU.

I have noticed that when I get into the gas I hit the MAP Limiter light and just from reading and tyring to learn that is tried to the voltage clamp correct?

Second the J&S has a built in voltage clamp, where can I change the setting on this to properly turn it to not hit the MAP Limiter light? The turn button right underneath it I assume, just want to make sure.
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Old 04-21-2004, 01:43 PM   #10
benjaminetanyahoo
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Screw it I will just find a Link Plus and sell this piece of junk.

Last edited by FutureSTIer; 04-21-2004 at 06:34 PM.
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Old 12-12-2004, 04:12 PM   #11
jared nelson
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any other info on the p0107? im trying to figure that one out on my own car right now.. i have a UTEC
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