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1

Omega General Help / Re: fault code 133 - omega mv6

« on: 04 September 2016, 00:14:02 »

Today I found that pin 31, ground pulse (from ecu) doesnt give any pulses. I tested it with voltmeter, by putting its - to brown/black wire and + to the battery's +.  No voltage changes between 1000rpm to 6k. 

Why is not ecu sending ground pulses from pin 31... Is my ecu faulthy?

2

Omega General Help / Re: fault code 133 - omega mv6

« on: 03 September 2016, 00:19:05 »

Firstly, ignore op com. Its shit.

Did the fault stay with valve 2, or move to valve 1?

If it stayed with valve 2, do a resistance chack of wiring between the valve and the ECU (you will need to remove ECU to test the wiring.

Well I did change solenoid valve 1 to 2.  It still stayed error for valve 2.  I also tested wirings resistance between ecu and valve. Pin 31 and 46. Both checked and seemed to be ok.

Anyway when I switch to ignition, it gives about 6-8v to valve's plug for about one sec with voltmeter, then it goes back to 0v..

Shouldn't it be 12v all the time?

3

Omega General Help / Re: fault code 133 - omega mv6

« on: 31 August 2016, 18:22:14 »

Which one is valve 2?  front of engine or rear of plenum?

4

Omega General Help / Re: fault code 133 - omega mv6

« on: 31 August 2016, 17:25:19 »

And I have checked with voltmeter, wiring seems to be ok.  The wiring for valve 2 solenoid will give 12v and engine on, over 13.8v

5

Omega General Help / Re: fault code 133 - omega mv6

« on: 31 August 2016, 17:05:22 »

I have now swapped valve 2 with valve 1 solenoid and same error still stays and comes back after cleaning errors.. It gives 12v to valve solenoid when ignition or when engine on.  Op com says active(0v) for valve 2 when engine on and because of that, it throws that error 133..



Any ideas?

6

Omega General Help / Re: fault code 133 - omega mv6

« on: 30 August 2016, 21:47:35 »

The fault code still pointed to Valve 2, even after you swapped the solenoid with the Valve 1 one?

If so, start metering the cable.

Ignore what says op com for now.

Oh sorry. I misunderstand. I'll try that swapping tomorrow.

But how I can test  that this part isnt broken.

7

Omega General Help / Re: fault code 133 - omega mv6

« on: 30 August 2016, 21:23:23 »

Shouldn't affect the fuelling.

Can you swap front and back solenoids over, see if fault moves with solenoid or not...

  The fault code still remains after I tried that move method.

 I dont think it is supposed to show active(0v) in op com at idle??

8

Omega General Help / Re: fault code 133 - omega mv6

« on: 30 August 2016, 21:14:05 »

Did it happen after some work?

Not actually, it just popped up yesterday. My car still works..  but air fuel rate is richer.

9

Omega General Help / fault code 133 - omega mv6

« on: 30 August 2016, 21:04:21 »

Hello, I have strange fault code related to intake manifold valves and I have not figured yet what is causing it..
My car is omega mv6 (x30xe) 1994.

My op com shows this
Error code 133: air intake manifold valve 2 voltage too low

When my car is running it shows air intake manifold valve 2 = active(0v)
And then when engine is off and ignition on active(12v)...

So what to do next?