wa.alldiesel

driving down the hwy came out of over drive at 65??? (47RE)
the button on the shift lever has an overdrive on and off switch, does not seem to be working will not toggle the light on the dash on or off, sometimes it will come on????? also not kicking down. At a stand still at a light it will be in 2nd, floor it and it wont go into 1st???? could it be the TPS all measurements are in range, TPS at idle is .89V and wide open TPS is 3.9V its smooth through the range with no spikes.

oldblues

hi
best thing is get a scaner and read the codes ?

poast what you find .

autozone and others do it for free !

list your truck , it will help otherss help you .

show your general location and you may have someone near that can giv you a hand !

wa.alldiesel

I have a scan gauge II. That should plug in? I'm gunna limp home from Tacoma to Seattle on Sunday morning about fifty miles. Bad idea????

dozer12216

Probablly bad ideal. Sounds like tranny has bit the provibal dust. Suggest drop pan and look for carnage.If magnet is size of cholocate Krispy Kreem donut with junk, I'm sorry.
If pan is clean, you may be lucky and live another day with output RPM sensor and solonoid on VB, good luck. May not find any codes, but good if do.

wa.alldiesel

Well made it home. pulled the pan looks ok. gunna see what Dave Goerend says.
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1-2-3

Mine did this. $35 rear speed sensor. Took you longer to dropthe pan that it would have to change the sensor. It's a common issue.

wa.alldiesel

So I thought that the kick down cable was out of adjustment. Dave said to check it.

1998.5 47RE kick down location on the transmission

patdaly

Scan for codes, P176X relates to governor solenoid/pressure transducer, fairly common.

Second gear start is indicative of limp home mode in the tranny.

wa.alldiesel

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Well if that was the case it would be stuck in 1st. Tranny is still able to shift from 2nd to 3rd witch means the sensor still works. Also found out when I put it in reverse(moving about 2 mph.) then drop the shifter into 1st it goes int first, then shifts up to 3rd fine. Still no 4th.

wa.alldiesel

Scaned for codes and found Number P0753
SOURCE http://www.dtcsearch.com/?gclid=COWp...FRs-awod5yh22w
Type Powertrain - Transmission - ISO/SAE Controlled
Description 3-4 Shift Solenoid, Transmission Relay Conditions

Cause Engine running, then the PCM detected a shorted or open condition in the 3-4 Shift Solenoid or its control circuit

here is what I did. I called Dave Goerend he ran me through a bunch of tests and found the problem. he had me check the codes with my scan gauge http://www.scangauge.com/ it showed me a P0753. Dave had me test the relay, it worked. We tested the wires to the solenoids and found that one of the sloenoids was bad for the upshift for 3 to4. well ill be fixing that tomorow.

wa.alldiesel

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wa.alldiesel

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Here is the view with everything removed except the coils.

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here are some pics of the parts removed.

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you can see the coil wire broken on the bottom.

replaced the coil, tested good. no more problems.

Deadbunny

all photos deleted

Onemoparnut

Yea what is up I cant see any pics?