87 Ranger computer reset
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Post Fiend
Joined: Sep 2006
Posts: 14,325
Likes: 14
From: Island Southeast Alaska
87 Ranger computer reset
Guy's a few months ago someone told how to reset the computer on my Ranger. I lost the info. It was something like disconnect than reconnect the battery. Than drive it a certain way through the gears or something like that. I understand the battery disconect but am lost from there.
It's hard to start when cold (fires and dies, fires and dies several times) like freezing temps. Will generally start first try when weather is warmer like raining and not snowing LOL. But runs rough.
Engine never gets up to operating temp. Prolly needs a thermostat. I just put a piece of cardboard in front of the new radiator like I did last winter. Haven't had to drive it yet to see if the heat will help it run better on the road.
It's the one in my sig. 2.9 auto trans XLT 4x4.
I have access to an 88 the same with a 5 speed that runes well with a busted frame for parts. It takes a full day to get to town to get parts and back as I live in the bush.
I don't have a repair manual so I can,t
. I luv that icon
Thanks for any info.
It's hard to start when cold (fires and dies, fires and dies several times) like freezing temps. Will generally start first try when weather is warmer like raining and not snowing LOL. But runs rough.
Engine never gets up to operating temp. Prolly needs a thermostat. I just put a piece of cardboard in front of the new radiator like I did last winter. Haven't had to drive it yet to see if the heat will help it run better on the road.
It's the one in my sig. 2.9 auto trans XLT 4x4.
I have access to an 88 the same with a 5 speed that runes well with a busted frame for parts. It takes a full day to get to town to get parts and back as I live in the bush.
I don't have a repair manual so I can,t
. I luv that iconThanks for any info.
Posting Guru
Joined: Mar 2005
Posts: 1,533
Likes: 1
From: Dexter, MI
Disconnect the Positive cable from the battery. Leave it disconnected for at least 15 minutes then reconnect. Then drive the truck at various speeds in different gears, making some stops along the way - in other words, your usual way of driving in town. This will rebuild trim tables in the computer and you should be good to go. The truck may run rough until the computer relearns the condition of the engine controls.
New User
Joined: Jun 2011
Posts: 1
Likes: 0
1987 Ford ranger wont start
i am sorry but i cant figure out how to post a new thread on here so hopefully you guys can help me. i have a 1987 ford ranger XLT 2.9 V6 4x4 auto tranny. has 121,xxx miles on it. i went o to work on friday and it started up and drove fine there. i parked it in the lot and come out after work and it turns over great but wont start. not a cough. nothing. so i tow it home and put a new cap rotor and plug wires on it and it starts upo great. i let it run for a couple minutes shut it off and go to bed. come out the next day starts right up drive to work park it come out of work and it wont start again. any clue what could be wrong?
Posting Guru
Joined: Jun 2007
Posts: 1,724
Likes: 1
From: Butler, IN
Welcome, awmeierhofer! At the top and bottom of this Ranger forum there is a "NEW THREAD" button. Click on of those buttons and you will be on your way with people itching to reply to your problem.
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