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Author Topic: lean rich  (Read 2518 times)

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mega3.0v6

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Re: lean rich
« Reply #15 on: 02 June 2008, 19:44:55 »
Today i changed the  engine coolant sensor was ok for 10 miles then it all started again. But i have a little feeling the thermostat is clogged up or stuck as the temp is getting high. I was in the misses omega sitting in traffic and hers goes just over the 90 line where as mine goes near 100 so im thinking that the water is not getting round the engine properly may be wrong but could this happen. When i changed the sensor i thought woooooo hoooooo fixed then it started again NOT HAPPY. Any thoughts on this being the case.
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mega3.0v6

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Re: lean rich
« Reply #16 on: 02 June 2008, 20:09:22 »
btt
 ::)
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Kevin Wood

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Re: lean rich
« Reply #17 on: 02 June 2008, 22:24:25 »
My thoughts are it could be a crank sensor playing up when hot, possibly an ignition problem (coil pack?), again playing up when hot or possibly a Lambda sensor. I would paperclip it and see if there are any new codes. :-/

Kevin
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mega3.0v6

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Re: lean rich
« Reply #18 on: 02 June 2008, 22:44:59 »
I have done a P/C test today with just 12 coming up.
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Kevin Wood

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Re: lean rich
« Reply #19 on: 02 June 2008, 23:07:07 »
I might be inclined to suggest an ignition problem in that case. First things first. Check the plug wells are clear of water and then the plugs, leads and DIS pack.

Getting one of our Tech 2 guys to take a look at the live data would be worthwhile, though, just in case something unusual is playing up.  

Kevin
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mega3.0v6

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Re: lean rich
« Reply #20 on: 02 June 2008, 23:17:09 »
I have checked for oil and water but all pots are dry. When i changed the sensor all was fine for 10 miles or maybe abit more then started again and my temperature seems to be really high compared to my wifes V6 mega. The thing that is really confusing me is that when cold all is fine till it hits the 90 degree mark on temp gauge after that its sort of a misfire but there is not popping seems as though it is flooding itself then when revs are right over the 2k runs fine again. The problem seems at the bottom of the range and when i had tech2 and the snap on machine plugged into it no faults were found and firing on all 6. Im going to  run it up to my mates garage tomorrow and take him for a spin to see if he can diagnose prob. With a machine plugged in whilst driving.
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