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#1
12-26-2016, 08:02 AM
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Sputters, Stalls
Hey all.Car sputters, bucks stalls and finally cuts out when under load especially on hills.This only happens in winter below 0'C. Originally it happened 3 years ago at 1'4 tank, then 1/2 then 3/4 and now between 3/4 and full. Only code I get is egr P0401.The egr pipe to manifold was split/rusted when I got it and fumes were deadly in the car. Unable to get the old one off without major work I cut and blocked both ends and as I said it worked fine 'till winter. I have cleaned the MAF sensor. Is it the possibly the IAT sensor?
Thanks
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1999 Buick Century Custom 3.1L , 148,000km. 2000 Toyota Echo, 1.5L 220,000km 
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#2
12-26-2016, 08:26 AM
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Re: Sputters, Stalls
It might be helpful to monitor fuel pressure and check the ignition system. Spark plugs with worn electrodes/wide gaps can misfire under load. The same can occur with failing plug wires.
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