Most of time it does this a couple of times and then works fine. Sometimes it will do it several times.
SOURCE: 2000 Ford Contour Acceleration Probs between 40-55 mph
Transmission was initially misdiagnosed as being ok. The problem was the "range sensor", which showed up on the transmission shops diagnostic computer on a second look.
Replacement of the range sensor solved the problem. This was a $150.00 fix. Unfortunately a lot of other cash was spent because of the initial miss.
SOURCE: something slipping in transmission ford contour 1999
it depends on the trans but ford had alot of problems with though years with the overdrive shift kit it is a band in the trans and it pop out and break you need to take to local trans shop and let them look at it and tell them the problem and they will take the trans out and crack it up and replace the part that need to be replace before you have to replace the whole trans the ford dealerships dont have the best trans people hate to say that but it true take to someone who specialize in trans only
SOURCE: Transmission Shifting
trans mod is opped bt the TPS sounds like a back flush system when trany was servd> may have a blocked valve hate that better to drop the pan and new filter and fluidS
SOURCE: 97 ford contour, 2.5 L, automatic transmission, OD
The first thing you need to do is get the tranny power flushed.
And not the aerosol cans of flush you buy at the parts store.
Don't go to AAMCO either.
Certified transmission or a reputible service garage can do this. It averages about $160. The contour uses a CD4E series automatic 4 spd tranny. It has a history of overheating. It was used in the Contour, Mystique, Ford Escape, Ford Probe, Merc. Cougar, Mazda 626 and MX-6, and Mazda Tribute. all had the overheating problem that cooked the tranny fluid. They run hot.
The overdrive light starts blinking I bet when you drive it on the interstate at highway speeds for about 5 or more miles... then it shifts real hard (whiplash effect). Turn the car off and reset the transmission controller and the light stops, and it shifts normally... this doesn't fix the problem though.
Primary solution is to flush the tranny. You have to do this to save whatever life is left in the transmission clutch disk/packs.
The CD4E does not have a filter in the pan, but a screen. It's located on the front of the transmission, not the bottom. The pan is hard to get at and is easier to do if you remove the tranny from the car. .
As i said, have the tranny flushed, then, pick up a good "stacked fin" oil cooler from your parts store. They run about $70 for a good one. If you get the tube/fin ones, they average about $30 but only cool half as much for the area they take up.
You can get a used one out of the early model ford Explorers (92-94) with automatic transmissions. They run about $5 to $10 at the junk yard.
Find the Transmission cooling lines going into the radiator tank and using a mini pipe cutter, cut the return line that goes from the radiator back to the transmission about 6-12 inches back from the tank. Get some heavy duty rubber oil tubing from your auto parts store and divert the output line to the cooler and then back to the tubing that hooks to the transmission...
You can even add an externally mounted oil filter, like the one used for the engine, next to the cooler giving you a great way to maintain your transmission even longer. A filter you can change like your oil filter.
Either way, you'll cool the fluid properly and extend the life of your transmission. The blinking light is a warning, like your check engine light, to get you to check the transmission... ie... I'm running too hot!!!
Also, here's a web site with photo's on how to do this....
http://www.grandprix.net/upgrades/cooler.html
one more...
http://images.google.com/imgres?imgurl=http://i.ehow.com/images/GlobalPhoto/Articles/5091022/229127-main_Full.jpg&imgrefurl=http://www.ehow.com/about_5091022_transmission-cooler.html&usg=__8xUKBwqIDsrAYI8cMhg5Uw8bHs4=&h=450&w=600&sz=40&hl=en&start=4&um=1&tbnid=6HnuKpt_YA78IM:&tbnh=101&tbnw=135&prev=/images%3Fq%3Dexternal%2Btransmission%2Bcooler%26hl%3Den%26sa%3DN%26um%3D1
SOURCE: 1989 ford ranger automatic transmission
Your truck has a A4LD transmission. The older ones had major problems. What i believe is happening with yours is the converter is locking up intermittently. 1st-4th are actual gears for 5th(overdrive) the converter locks. I had the same problem as well as did alot of people I spoke with. I solved it by getting a used A4LD out of a '92 ranger with a 3.0L motor (these transmissions had some upgrades to deal with a number of problems including the one you are talking about.) You will need to swap bell-housings (this requires the pump to be shimmed properly,I paid a shop $100 to install the pump ,with is attached to the back of the bell-housing) There are only 2 kinds of A4LD one for floor shift and 1 for column shift,make sure you get the right one.Good luck.
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