Join Date: Feb 2011
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I have a 2001 F350 with automatic transmission 205000 miles. For 2 weeks now i have been having problems with the truck stalling while slowing down to a stop. It started happening a few miles after filling up at a different fuel station that i normally use. i ran that entire tank out and filled up last week at my normal chevron station. At first i thought i just got a not so good tank of gas from the small cheaper station than normal, but now after filling with good quality chevron still having the problem.
Things i have done... replaced fuel filter... replaced cam position sensor.
The stalling always happens when slowing down to a stop when shifting down into lower gear. normally if i am sitting in park it idles about around 800 rpm. when downshifting to stop it will drop from say 1200 rpm down to 500 really quick when downshifting, then it will either ramp back up to around 800 or every now and then it will just drop out and stall. no check engine lights come on. i just put in neutral and it cranks back up, it cranks a little slower than normal after stalling. another detail if i am running the ac compressor the chances of it stalling increase, if i am not running the ac most of the times the rpm will drop down to 500 then kick back up to 800. another time it happens is if i am getting into a parking spot, if I turn the wheel sharp and push down on the petal sometimes it will stall. so it seems that it stalls if there is extra pull on the engine (power steering/ac compressor). However it has stalled when coming to a stop without me turning the wheel or having the ac on.
It has stalled once when sitting idle for a long time (15 minutes) with ac running. I don't know exactly how it happened then, i had ran into a store left it running and it was stalled when i came back out.
this is the only problem i am experiencing, when driving it powers just fine. i can get on the pedal and it runs fine. just a problem with slowing down to a start.
Also, another note I always use diesel kleen additive. when i thought i got the bad tank i doubled the dosage on that fill up.
So any ideas on what i could try next? thanks in advance.
2001 F-350 Crew Cab 4X4