99 2500 diesel has only first and reverse
#1
99 2500 diesel has only first and reverse
my 99 dodge cummins only has first and reverse pulled codes it only had one code 1688 truck want shift out of low gear at any speed or rpm changed output senior and gov pres siol and transducer no help so i pulled the trans thinking it was toast but again wrong its a 48re its at shop shop tech it wasnt bad enough to cause shifting problems is there a way on a diesel to by pass the electronics in trans to make it shift as a test? if so will it damage something else in the truck by doing that? Really need Help
#2
Are you sure it's 1688?
P1688 Internal Fuel Injection Pump Controller Failure
You can do a pressure test that will give you something to go on.
http://www.atraonline.com/manuals/se...0/2000_154.pdf
P1688 Internal Fuel Injection Pump Controller Failure
You can do a pressure test that will give you something to go on.
http://www.atraonline.com/manuals/se...0/2000_154.pdf
#3
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