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Poor running P38 4.6 v8 after Wading

3254 Views 15 Replies 6 Participants Last post by  paul.adshead
Hi, Can any one help?, spent day off roading with no problems until last flood, powered through flood and got through ok, engine stuttered after 100 metres lost power, regained power for moment then lost it, got on road with on/off power to 45mph first hills down to under 20mph, continued to drive for few miles, stoped at Services. Air filter was wet, removed it and cleaned air box. Engine starts and sounded smooth on tickover but wouldnt rev with full power. Continued to drive for few miles got worse, stoped and noticed LH Cat was glowing bright red, got home on tow rope. Next day checked plugs, full spark on all, runs with no knocks or vibrations but wont rev past 2-3000rpm. Has anyone go any ideas ??? Air flow meter? Lambda sensor? cat?
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leftlanetruckin said:
You need a multimeter to check the o2 sensors.


False. You need an oscilloscope.
They do give off a voltage...but it's a very fast up and down change, and can only be caught by an oscilloscope. The multimeter just sort of tells you it's on...not that it's in range.
And I learned something new today also. I love your multimeter.
I hijack threads like Delta. I even have a knife and a USP 45 within arms reach. Screw you TSA...alla la la la la la la la!
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