1999 Ford Ranger 3.0L Flex engine. Automatic transmission slips occasionally when starting out after a short stop. Example - I drive to the store, kill the engine, do my shopping, start up the truck and go to drive away - slips. Not always, hasn't done it when starting from a prolonged park, only in forward, and to fix it now I kill the engine, restart and usually it's fine. At worst I've had to restart twice to correct. No idiot lights & no O/D flickering as I've seen in other questions. TIAJim
Country: United StatesMake: FordModel: Ranger Super Cab 4x2Year: 1999Engine: 3.0 Flex
Hi and welcome to J.A. I will try and answer your question the best I can..
This is surely a mechanical issue since the flashing od light would indicate an electrically detectable issue in it.
There are a couple of things that can produce these symptoms, the first is wrong fluid level in the transmission. Check for correct fluid level after transmission is hot. This should be after at least aXXXXX and the stick should read at the top of the marked area in the dip stick. Secondly the transmission filter could be clogged and sometimes will cause this effect. There are also parts called accumulators that could have a broken spring inside. But I would go basically with fluid level and filter condition. P.S. when you check for fluid level also note transmission fluid color, it should be ruby red and have no burnt like smell, if it is too brownish or smells kind of burnt then you have to know that when you replace this fluid the vehicle might not even shift at all since new fluid magnifies any issues in the transmission and its a known fact that it could just slip totally and you would have to overhaul or replace it...
13 years experience, full ford training for a couple of years, chief supervisor for ford dealership.
This problem has been occuring for a couple months now and during a recent service they relaced the trans pan gasket (small seepage reported, but I had no accumulation where I park). I had them change the filter while they had it open. I thought they were going to change the fluid also, but they said they do not always do the whole fluid change when changing the filter (hook up to the pump and completely flush). Anyway, he said the fluid looked good and there was no indication of burnt smell or discoloration. The problem was there before & since service, no change in repetitiveness. How would this account for correcting with restarting the engine?
Have you scanned the truck anyway ? Even though the lights don't turn on we might have a code.
Not yet. That's where I am going next. At this point with symptoms seen, suspect sticky solenoid. Will check codes before anything further.
ok that is great, let me know what you find out.