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Power Strokes
7.3 Tech
Cold start
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[QUOTE="dpfreak, post: 1122640, member: 18203"] I need some help. I have a 2001 f-250, 7.3 with 275,000 miles , sct tuner, afe cold air intake and 4" exhaust from the turbo back. Truck runs great and never gives any problems ...until it gets real cold! Last year if it dropped below 25 degrees the truck would not crank and kept throwing codes 1670 and I think 603, 1670 is the one that I'm most worried about "electronic feedback signal not detected". This year in the last couple months I've had the glow plugs changed and I personally changed the glow plug relay, I know the relay is working and I'm getting power going in to the valve covers but if I do not plug my truck in it will not crank at temp. below 32 ish , and it throws the 1670 code even when I clear it and try to crank it it will throw it again. The truck just spins over and I get no exhaust coming out the pipe. Any help with this matter would be greatly appreciated as I'm about to loose my mind ..lol. Thanks! [/QUOTE]
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