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1

Omega General Help / Re: Error codes 0170 & 0173

« on: 10 November 2011, 13:46:14 »

And the fuel trims?

Haven't bother to check the values, I assume they are within specs because there hasn't been error codes anymore. If you want to know some values I can connect my laptop and check..

2

Omega General Help / Re: Error codes 0170 & 0173

« on: 07 November 2011, 13:34:44 »

Just wanted to feedback the happy ending: There was a small vacuum leak in one of the vacuum tubes. After fixing this leak by replacing the tube, there has not been any error codes.

3

Omega General Help / Re: Error codes 0170 & 0173

« on: 27 August 2010, 11:03:38 »

Finally got the Gunson meter, here are the idle results, taken directly from the vacuum line from intake system:



That doesn't look too bad?

4

Omega General Help / Re: Error codes 0170 & 0173

« on: 21 June 2010, 10:59:52 »

Much appreciated the clear explanation Kevin!

I just ordered the Gunsons G4103 LoGauge vacuum meter from ebay, so I'll try to find the possible leak myself. It looks like the leak should be equal to both sides of V (from the equal STFT1&2 trim values).

5

Omega General Help / Re: Error codes 0170 & 0173

« on: 20 June 2010, 23:15:44 »

Well, I assume the smoke tester is something like this: http://www.youtube.com/watch?v=FfiQ7qWiG-M

I wasn't watching the test in the shop, but it was Bosch car service...

6

Omega General Help / Re: Error codes 0170 & 0173

« on: 20 June 2010, 22:11:47 »

Thanks, I've already changed the maf for a brand new OEM Bosch part (same part number) from vauxhallworldparts.co.uk

In the most cases I've seen, the long term fuel trim values are high if the maf is faulty. In my case, the LTFT values are low but short term trims are equally high.

I'm starting to doubt the smoke test, is it bulletproof way to check the vacuum leaks?

7

Omega General Help / Re: Error codes 0170 & 0173

« on: 20 June 2010, 21:43:58 »

Hi!

The codes are still on. Now I have had a smoke test for vacuum leaks, and according to the mechanic my car has no vacuum leaks at all. He also tested the lambdas and they were ok. When cruising downhill and the pedal is up and throttle is light, both STFT's rockets up to 25. Here is some recent data:



Anyone got ideas how to proceed? Could this be caused by faulty ignition coils?

8

Omega General Help / Re: Error codes 0170 & 0173

« on: 19 October 2009, 12:35:14 »

Thanks for reply Kevin.

I had lifted my foot from throttle, but my car has autobox and this time the engine was not braking either. Do you have any tips how to check the pipes, seals and the breather box vacuum "bulletproof"?

9

Omega General Help / Re: Error codes 0170 & 0173

« on: 19 October 2009, 11:44:41 »

Hi all! I am new here and just found this thread. I have similar problems with my 3.2 engine (error codes P0170 & P0173).

I've checked for vacuum leaks but haven't found any, and I've just changed the plugs and the MAF. I've been logging the engine data, and it seems that when I lift the throttle pedal, the short term fuel trims shoots up to +25% (you can see that between 20 and 38 seconds on the graph). Otherwise it looks quite ok for me.

Can anyone advice what to check next? I think I will try to clean the throttle body and butterfly.