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Old 04-26-2007, 14:13   #1 (permalink)
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hesitating mondeo 18i

hi guys

I'm at the end of my tether my mondeo 18i starts up first time everytime then you get about 100 yds down the road and it loses power and refuses to rev then picks up after a good hard kick on the throttle then you get going and it just hesitates then goes OK for a while then starts again the idle is rough sort of hunting then it clears and goes OK again even idle is OK at that point. Ive changed the spark plugs changed the coil pack and cleaned out the breathers i found when i take the air box off from the top of the inlet when its running rough the idle smooths out put back on the idle goes rough like hunting but tried it a short distance up the road with air box on and the hesitating comes back even though the idle is perfect anybody any ideas on this one as this is doing my head in

thanks in advance

Pete ......................................
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Old 04-27-2007, 10:22   #2 (permalink)
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Re: hesitating mondeo 18i

Sounds like the MAF sensor is faulty.
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Old 04-27-2007, 11:13   #3 (permalink)
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Re: hesitating mondeo 18i

Hi Fordtech


Thanks for your reply is there anyway of testing the maf sensor before i buy another one.


thanks in advance

Pete....................................

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Old 04-28-2007, 03:53   #4 (permalink)
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Re: hesitating mondeo 18i

You've already tested it by removing the inlet pipe from the throttle housing! This effectively takes the MAF out of the equation, which evens the idle.
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Old 04-28-2007, 14:00   #5 (permalink)
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Re: hesitating mondeo 18i

Hi Fordtech

I took the plug off the MAF sensor today following your advice and the idle smoothed out and the car even drove better so i went and brought another MAF sensor today fitted it and now the car is fine i did not realize on Thursday id already tested it by removing the air-box from the inlet.
I hope this thread helps someone else who experiences this problem.


Thanks again Fordtech for helping me sort out this annoying problem its been doing my head in for weeks now.

Pete.................
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