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Author Topic: 700 r4 questions 1990 chevy 4x4  (Read 5835 times)

Offline plowking_90

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700 r4 questions 1990 chevy 4x4
« on: March 01, 2008, 09:34:57 am »
yesterday my 700r4 started acting funny, it started by not shifting into over drive, then it was banging into gears off a stop, then not shifting into second, i added some tranny fluid it was low but not bad, then it was banging going from reverse to drivebut shifting through all the gears fine, today it shifts through first and second and stay in second till i pretty much floor it.im gessingits the tv cable but im not sure i know the 700r4 is a weak tranny, what could this be??? truck is a 1990 chevy 4x4 2500
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Offline VileZambonie

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Re: 700 r4 questions 1990 chevy 4x4
« Reply #1 on: March 01, 2008, 12:27:19 pm »
It's not a weak tranny but if you're plowing with it are you taking the proper precautions? Auxiliary cooler, more frequent services etc? TV cable adjustment is critical however flooring it will not make it upshift unless your governer pressure is extremely low. If the fluid level is correct then I would suggest popping off the governer cover and checking the governer gear and valve.
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Offline plowking_90

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Re: 700 r4 questions 1990 chevy 4x4
« Reply #2 on: March 16, 2008, 06:06:28 pm »
truck was shifting fine for a week now it goes into neutral after first gear, is my tranny gone? anything i should try or just throw my spare 700 r4 in?
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Offline VileZambonie

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Re: 700 r4 questions 1990 chevy 4x4
« Reply #3 on: March 16, 2008, 06:50:08 pm »
Did you check the fluid level? Did you check the TV cable adjustment?

So you have no second, do you have reverse?
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Offline plowking_90

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Re: 700 r4 questions 1990 chevy 4x4
« Reply #4 on: March 17, 2008, 06:31:16 am »
i have reverse no second third or over drive fluid is good
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Offline VileZambonie

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Re: 700 r4 questions 1990 chevy 4x4
« Reply #5 on: March 17, 2008, 08:23:15 am »
check the governer valve. It's easy enough to get at, pop the cover off and remove it. Check the gear and make sure the valve moves freely.
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Offline plowking_90

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Re: 700 r4 questions 1990 chevy 4x4
« Reply #6 on: March 17, 2008, 10:27:44 am »
where is the govener valve?
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Offline plowking_90

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Re: 700 r4 questions 1990 chevy 4x4
« Reply #7 on: March 17, 2008, 10:45:58 am »
took it for a ride thismorning  and it shifted trough all the gears but shifted hard and felt like it slipped in over dive could it be the filter?
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Offline VileZambonie

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Re: 700 r4 questions 1990 chevy 4x4
« Reply #8 on: March 17, 2008, 02:30:57 pm »
The governer valve is behind the governer cover on the side of the trans. Big round cap, you can't miss it.
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Offline plowking_90

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Re: 700 r4 questions 1990 chevy 4x4
« Reply #9 on: March 17, 2008, 04:48:01 pm »
gonna do it tomarow after work good thing i have 3 trucks to back me up
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Offline Dragon

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Re: 700 r4 questions 1990 chevy 4x4
« Reply #10 on: March 17, 2008, 11:46:45 pm »
Drain the Fluid, drop the pan, look for signs of excessive debris(small amounts of fine debris is typical of a working trans, anything larger then it would be time to watch it more closely)... If large amounts of debris is found at the bottom of the pan, then do this: Replace pan, and flush fluid through it, drain again, drop pan to inspect, then change the filter....   If minimal amounts of Debris/Very Fine Debris found, go ahead and replace filter, and skip flushing procedure explained before....
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Offline plowking_90

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Re: 700 r4 questions 1990 chevy 4x4
« Reply #11 on: March 18, 2008, 03:54:14 pm »
droped the pan today, looked like a handfull of machine shop shavings near the magnet should i change the tranny? or put it back to gether with a new filter and gasket
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Offline VileZambonie

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Re: 700 r4 questions 1990 chevy 4x4
« Reply #12 on: March 18, 2008, 05:10:03 pm »
did you remove the governer? take a pic of the chips...
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Offline plowking_90

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Re: 700 r4 questions 1990 chevy 4x4
« Reply #13 on: March 18, 2008, 05:40:42 pm »
should i go ahead and put it back together, i got a new filter, fluid and gasket. i dont know if i should trust it anymore looks like a handfull of 1/8 - 1/4 inch chunks
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