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Old 03-09-2017, 09:56 AM
bud77a bud77a is offline
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Default 03 4cyl O/D off light flashing, have to restart and it goes away and drives fine

2003 Ford Ranger 4cyl automatic has had a few issues with slipping and shaking/rough when I place it in reverse and give it gas occasionally. Today while speeding up in stop and go traffic it slipped between gears (revved up to around 4k RPM's and wasn't catching) so I had to let off the gas and let it catch so I accelerated slowly and noticed the O/D light started flashing after this. Next time I slowed down in traffic and sped up again it shifted very hard between 1st and 2nd and did this the whole 5 miles to work. I put it in park and turned it off at the gas station a few blocks from work and restarted it and the O/D light went out and it shifted normally and smoothly the whole rest of the way in. anyone had this issue or know what I may eliminate before I take it into a shop so I have some idea what im doing and don't get bent over by someone more knowledgeable? lol any help would be much appreciated. Additional info: 77,000 miles, reg oil changes, recently topped off fluid including trans fluid (checked at work this morning still full) I haven't had the transmission fluid changed or filter changed in the past year since I got the truck from a relative, unknown if he had ever had it done either.
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Old 04-01-2017, 12:00 AM
bud77a bud77a is offline
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Default Re: 03 4cyl O/D off light flashing, have to restart and it goes away and drives fine

It dropped P0734 code, incorrect 4th gear ratio. After changing out valve body myself after reading about the symptoms and thinking that may be the issue, it made it worse slipping out of every gear instead of just 1, I took it to aamco, they dropped the trans and found the pump failed and caused significant planetary damage. Had to have tranny rebuilt, cost $2300 total with 1year parts labor warranty and it's running great now... Was just hoping it was the infamous valve body gasket problem but I was not so lucky.
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2003 Ranger 2.3L 2WD reg cab that has had every possible issue. It is very efficient at burning through money however...
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