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Engine "stumbles"when cold

Tiny
JULIEMAY
  • MEMBER
  • FORD THUNDERBIRD
I have a 1995 Ford Thunderbird /V8/Auto/ 71,000 miles. Check engine lite came on 2000 miles ago. Tech said it was MAF sensor. Car runs excellent, idles perfect, cruises great, accelerates good. Only problem I have is that it has to be warmed up well otherwise it stumbles on acceleration until it warms up. Ambient temp doesn't make a difference. It does not stall but almost dies and then kicks in and goes.
Any thoughts?
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Monday, February 27th, 2006 AT 11:59 PM

2 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,526 POSTS
You need to rescan the vehicle. It sounds like it could be is oxygen sensor or a coolant sensor, also check the fuel filter if you have not replace it recently. Please let me know.
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Wednesday, March 1st, 2006 AT 11:25 AM
Tiny
JULIEMAY
  • MEMBER
  • 2 POSTS
Thanks, I'll get a rescan done. If the MAF was the real problem then it shouldn't run as good as it does. I've checked the tubes and hoses between the MAF and throttlebody and don't see any problems. Also could the PVC valve cause a faulty MAR read? If nothing changes with the reading I'll change the coolant sensor.
Regards JulieMay
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Wednesday, March 1st, 2006 AT 6:36 PM

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