1985 astro 700r4 shift problems - Hot Rod Forum : Hotrodders Bulletin Board
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Old 09-11-2007, 08:09 AM
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1985 astro 700r4 shift problems

My 1985 astro that i think has been stood a while is acting strange, It seems fine for the 1st few minutes and changes up gears fine then its like its kicked down a gear and then a while after that its like it stays in a low gear and slips.

Any suggestions please? sorry if its been covered, i've had a look back a few pages.

Cheers Smit

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Old 09-11-2007, 08:44 AM
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one point to note is the dip stick has an end welded on it so i'm unsure how much fliud should be in there, were emptying it and cleaning the filter, does anyone know how much fluid should go back in please?
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Old 09-11-2007, 01:40 PM
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what is the history of this trans? Mileage , recent repair work?


Low oil will cause slipping. It may be causing a low pressure problem if the fluid is getting air into the system
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Old 09-11-2007, 02:53 PM
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I've just bought the van as a none runner and have no real history of it its now running nice other than the transmission!
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Old 09-11-2007, 04:33 PM
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sounds like you may have an internal seal leaking when the fluid is cold it is able to seal but when it gets hot and thinner it leaks and makes the tranny slip. I would get it overhauled
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Old 09-12-2007, 02:09 AM
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Quote:
Originally Posted by performabuilt2
I would get it overhauled

em thats not so easy or cheap in the uk
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Old 02-20-2009, 07:10 PM
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after dropping the pan and filter and letting it sit and drain for about 10-15 min it should take about 5-5.5 quarts but i would suggest getting a new dip stick 700 are picky as little as 1/2 quart other wise if it still does it after you fill it with the 5-5.5 quart and still use the old stick just add another quart if it is good get a new stick if it does the same get a rebuild
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Old 02-20-2009, 07:20 PM
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Quote:
Originally Posted by 69chevelless
after dropping the pan and filter and letting it sit and drain for about 10-15 min it should take about 5-5.5 quarts but i would suggest getting a new dip stick 700 are picky as little as 1/2 quart other wise if it still does it after you fill it with the 5-5.5 quart and still use the old stick just add another quart if it is good get a new stick if it does the same get a rebuild
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