dies when put in reverse

psd tuner · #1 (**permalink**) 05-06-2009, 08:48 PM

my brothers truck is a 01 f-350 psd and his truck dies as soon as he puts it in reverse it dont die when he puts it into drive. he has a dp chip on it. so i am wounderin if its the chip or a sensor???

oldtimer550 · #2 (**permalink**) 05-07-2009, 07:04 AM

Does it "lug down" or just stop instantly?

helsel_182 · #3 (**permalink**) 05-07-2009, 07:06 AM

it might be a fault in the chip did he try taking it out and see if it still stalled.....

psd tuner · #4 (**permalink**) 05-07-2009, 07:53 PM

it lugs down then dies...ill go over to his house and help him out. i think we will try pulling the chip out.

**OneBigDoofus** · #5 (**permalink**) 05-07-2009, 07:59 PM

Have you changed transmission filter lately?

oldtimer550 · #6 (**permalink**) 05-08-2009, 10:12 AM

If it lugs down, the tranny isn't sending fluid to the TC properly. Basically it's supposed to have enough pressure to "declutch" @ low RPMs, gradually releasing pressure as RPMs increase to "engage" the TC...It could be a chip malfunction, might be a tranny issue.

psd tuner · #7 (**permalink**) 05-08-2009, 09:20 PM

thanks guys. will try it and c wat happens.

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