Please help!
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New User
Joined: Jul 2015
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Please help!
I have a 99 ranger 4cyl automatic. Speedo started cutting out and transmission started slipping really bad. I was working out of town and had no choice but to take it to a mechanic (as i usually fix it myself). He charged me 800 bucks for a used tranny installed. Fine. Get the truck back and it's worse than before i brought it in. At this point I'm supermad and just limp the truck home from Detroit to ky... I get home and swap out the speed sensor. I acted better as far as shifting but the speedo still flicked like it had a short. So I swapped out the actual sensor plug. Now it works better than it ever has but still has an occasional flicker from the speedo and slight jump when shifting. I have completely changed everything I know to do except swapping the rear axle. I don't want to junk this truck cuz the motor is solid but I can't keep sinking money into it. Any suggestions or other members that have had this problem??? Please help.
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
Welcome to FTE.
Since you like turning your own wrenches, maybe consider investing in a low cost ELM scantool, running FORScan or a like software to the viewing device of your choice as discussed here https://www.ford-trucks.com/forums/1...-scantool.html & have it scan All of the vehicle computers/controllers for trouble code clues & post All code Numbers.
Since you like turning your own wrenches, maybe consider investing in a low cost ELM scantool, running FORScan or a like software to the viewing device of your choice as discussed here https://www.ford-trucks.com/forums/1...-scantool.html & have it scan All of the vehicle computers/controllers for trouble code clues & post All code Numbers.
Senior User
Joined: Dec 2003
Posts: 193
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From: florida
been down this road,, loose fuses for the gem,, relay under the hood loose,, bsr behind radio ,,, and mine still does it every once in a while,,, start up goes into limp mode then after a few miles straightens up and will run as long as start motor up every once and a while,, let it sit over night and back to the beginning,,, is you find out waht it is please post it,,,
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
To get you started on your trouble shoot, since you report the speed-o & tranny shifting have been acting out, put the rear differential mounted ABS speed sensor on your suspect list, as its PID output is used by the tranny computer, speed-o, ABS & cruise control systems. SO, if the speed sensor output is corrupt, those other systems may also be acting out & the ELM scantool can also querry those computers/controllers for clues, that a code reader, or autoparts store low end scantool cant access. Let us know what you find.
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