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46

Omega General Help / Re: Radiator Fan problem? early V6 model

« on: 01 October 2010, 23:29:13 »

Did have a good look before posting (always do) but only found FAQ on coolant temp gauge display & the disparity between FL & PFL models... will go and trawl back through 'em :-/

47

Omega General Help / Radiator Fan problem? early V6 model

« on: 30 September 2010, 23:40:26 »

I've been keeping a close eye on my coolant temp and fan operation following prolonged fast idle test at MOT.

My rad fan only cuts in when coolant temp gauge is showing 97.5 degrees. It usually cuts out about 93 degrees and this process repeats itself... temp rises high, fan cuts in, temp drops & so on. There is no steady temperature unless I'm on a run (wind assistance). When the rad fan does cut in, both a/c fans cut in too. So I have either no cooling or max cooling? Is this normal or should I replace rad thermo-switch etc.. Also should rad fan cut in low speed before temp rises to 97.5 degrees?

Any Ideas.. ?

48

Omega General Help / Re: 3.2 idle problems/surging

« on: 02 October 2010, 01:25:20 »

thanks Osprey didn't know such things existed... never seen a car without a throttle cable 

49

Omega General Help / Re: 3.2 idle problems/surging

« on: 01 October 2010, 23:35:06 »

Posted by: aaronjb Posted on: Today at 09:38
24_Valve wrote Today at 01:37:

I don't know if you have an Idle Control Valve on the deisel?  Someone please correct me if you don't. But if you do, then remove it from it's rubber housing (1 x jubilee clip at front & unplug electrical connector at rear) Clean it with loads of carb cleaner & replace 

Not on a diesel no, but in his original post he says "I have a 3.2" which would mean DBW and as far as I know, no idle control valve (the ECU just moves the throttle butterflies to control the idle)..
 

My mistake was looking at model stated beneath avatar and hazarding a guess... should have read OP properly, Anyway haven't a clue what DBW means so I'll leave to the experts 

50

Omega General Help / Re: 3.2 idle problems/surging

« on: 01 October 2010, 01:37:36 »

I don't know if you have an Idle Control Valve on the deisel?  Someone please correct me if you don't. But if you do, then remove it from it's rubber housing (1 x jubilee clip at front & unplug electrical connector at rear) Clean it with loads of carb cleaner & replace

51

Omega General Help / Re: MAF Sensor Fault on P/FL V6 ??

« on: 21 September 2010, 22:13:30 »

Thanks guy's, was surprised by the engine management light still remaining lit, briefly after starting, eventhough MAF plug reconnected?

2a) On some faults - removing fault condition

but realise it might be a case of:

2b) On some faults  2a + 20 or so "clean starts"

After replacing crankshaft sensor, Code 19 (that was showing with the engine running) just disappeared

52

Omega General Help / MAF Sensor Fault on P/FL V6 ??

« on: 21 September 2010, 19:54:42 »

I diconnected the MAF sensor before last MOT retest to see if it would drop CO emissions. It actually doubled the CO content. I knew doing this would generate a fault Code 73 "Mass Air Flow Sensor Voltage Low" and it did.

I've reconnected the MAF plug & today reset the ECU (disconnected battery negative lead for 2 hours) to get rid of the fault code. Re-checked for codes & Code 73 still present? Does this indicate that my MAF sensor is faulty?? Also would Code 73 flash up if there's an air intake problem as opposed to sensor fault? thanks 

53

Omega General Help / Re: ABS TC Warning Light Coming On ??

« on: 21 September 2010, 23:15:01 »

Thanks TB might ask Razzo if I can give it a crack on the Opel Scanner, mine is pre '98 so might be ok 

54

Omega General Help / Re: ABS TC Warning Light Coming On ??

« on: 18 September 2010, 13:33:40 »

thanks 

55

Omega General Help / Re: ABS TC Warning Light Coming On ??

« on: 17 September 2010, 01:17:44 »

They come on shortly after starting a run, half mile or so down the road... speedo still works fine when they illuminate. first time it happened I just waited til I was at a set of traffic lights, cut the engine, restarted & they disappeared (& stayed off).  came on again today half mile into a run stayed on til I cut the engine. did 2 or 3 short runs after this & didn't come back on?

56

Omega General Help / ABS TC Warning Light Coming On ??

« on: 16 September 2010, 23:32:07 »

Twice in last 2 days my ABS & TC amber warning lamps have come on & stayed on whilst driving under normal conditions... As soon as I restart the car they both display briefly with the other check lamps and go out as they should & stay off? If there is an ABS fault would they not stay on each time I use the car? any help appreciated 

57

Omega General Help / Re: MOT Emissions FAIL - Help!

« on: 10 September 2010, 00:00:42 »

thanks Abiton will definately have a think on it. Can't recall exactly where they join into 1. Guess its just behind the back box, so would need stripping down because it has 2 exhausts/cats ending in one back box/tail pipe. Wish it just had seperate twin exhaust tail pipes, like other motors 

58

Omega General Help / Re: MOT Emissions FAIL - Help!

« on: 09 September 2010, 23:25:59 »

Posted by Kevin Wood on 02. Sep 2010 at 10:35
Yes, indeed. You can see the Lambda sensor outputs, MAF output, fuel trim, temperatures, etc. so it would be good to see the live data. Even the engine codes, if any are present, might indicate something such as a fuel trim out of range or a lazy Lambda.

took the mig to razzo & hooked it up to the Opel scanner... Live data showed all of the above with the following outcome: Live data showed lamda readings (both sides) within limits but at the lower end of the spectrum. Live data also showed overall mixture as Lean. Everything else was absolutely spot on! Can't re-write to the ECU with this scanner but read out seems to show everything (very impressed)

Unfortunately following the scan the mig again failed on CO & Lamda, eventhough lamda was ok on last attempt.

Question is; replace O2 sensors or both Cat's  :question

CO 0.48
Lambda 1.04
HC 128

thanks, steve

59

Omega General Help / Re: MOT Emissions FAIL - Help!

« on: 05 September 2010, 01:05:59 »

Thanks Razzo, you're a life saver  will pm you to discuss

60

Omega General Help / Re: MOT Emissions FAIL - Help!

« on: 04 September 2010, 02:18:40 »

took the mig to local garage to see if there is any sort of misfire (don't really know if I'd spot it) The mechanic had a good listen at the same time pushing down the throttle until my rev counter was showing 6.5 k  Thought he might kill her but said the engine sounds perfect  went on to say throw in a new set of plugs anyway... (KW on the button again) but shouted out, as he walked off... "don't buy bosch, they're sh*t!"... "make sure you get NGK!" Is this true? if so am I right in thinking the equivalent p/n for NGK plugs is BKR5EK.  The bosch p/n in haynes for pre-facelift is FLR 8 LD+U... all models? any ideas