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Transmission problem, possible suggestions?

98 Tacoma SR5 4cycl Automatic Extended cab 2wd. 55000 miles.

When cold, or when it's not been in use for 3 or more hours, the transmission will not shift properly.

To start out you get stuck in 1st, then after ~2 mins, it will reluctantly shift to 2nd. After 10-15 mins it will shift to 3rd, and it takes a long time to get to overdrive. Sometimes you can get it to shift ahead of that schedule by dropping to 2nd, then back to drvie a few times. Occasionally that will make it shift. Once the vehicle has been running 20 minutes or so, it's perfectly normal and safe for the freeways.

I took it in for service yesterday, and they flushed the transmission fluid. Drove it 110 miles afterwards, only to find myself on the 101 with a max speed of 45 MPH. Dangerous (well not at rush hour) to say the least. Morning after I was stuck going 20 for a few mins, then 40, and finally I could 50 a few yard before I made it to work.

Environmental info: Low temps: 63F 100% humidity (night) Highs: 85-100F ~40% humidty. (day)

Any thoughts?

Reply to
C Wood
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My manual transmission was particularly hard to shift when cold. I put synthetic oil in it and it's like it was overhauled. Might be a cheap fix.

Reply to
H Hornblower

Please read the first line on the post:

98 Tacoma SR5 4cycl Automatic Extended cab 2wd.

Emphasis on "AUTOMATIC"

Reply to
C Wood

try synthetic automatic transmission fluid, Maybe you'll get lucky

Reply to
H Hornblower

Change the gear oil to some lighter stuff, ie 75-90

Reply to
MDT Tech®

Are you talking about the rear diff? That's the only thing in a 98 2WD Tacoma that uses gear oil...

I'd try synthetic auto tranny fluid too, if I were you.

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Reply to
HBoss

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