Question about Ford F-250
Transmission jerks in low gears only when cold, I just flushed and changed the fluid and filter. I was told it may be the modulator valve any insight would be great thanks.
May be the internal automatic clutches on tranny. basically may need to rebuild it why u have it out
Posted on Jul 14, 2013
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Posted on Jan 02, 2017
75,000 miles isnt alot of miles,unless they were mostly city miles. If you aren't experiencing any transmission problems,i would drop the pan,change the filter and whatever fluid the pan holds,and hold off on flushing the entire sytem.The clutches and bands sometimes don't do well when shocked with ALL new fluid that contains a certain amount of detergent.The only real problems i have seen with the total flush is on Dodge trucks of the 90's up to even 2000 and some later models,the transmissions use a governor pressure sensor,and solenoid,and i have seen many of them set codes after the flush,and the components having to be replaced with new.Black fluid isn't a good indicator.Brown fluid,is better than black.And red fluid is the best.
Posted on Jul 07, 2008
That sounds like solenoid problems if this is an electrically controlled transmission. Fluid and filter change will likely NOT fix this. Flushing and filter change is preventive, not repair. Is the check engine light on? If so, rent a scanner and read the code(s). It should point out problems with transmission control. You likely need the services of a good transmission repair facility (many penny!).
Posted on Aug 24, 2009
the 95 models did not have a vaccum modulator on them they were and electrronic transmission it is probably in the tranny itself.
Posted on Aug 30, 2009
Two possibilities here, First have the transmission fluid checked. You can do this yourself. with the car warmed up find the transmission dipstick, it's just like the oil dipstick, pull it out and wipe it off then reinsert it and pull it back out. at the bottom you will find the fluid level and a mark on the dipstick indicating where full is. If it is indeed full the your transmission bands are worn. The old fluid had enough "gunk" suspended in it to make it thicker and therefore you didn't get the "thunk" as it went into gear but now with new fluid you are hearing it.
Posted on Nov 14, 2011
Usually if the trans is acting up new fluid isn't going to change a thing, that's usually a ploy to get you to spend some money, just what I have seen.. Q: does the trans act up more or less when hot or cold, if there is a difference with temp then changing the fluid isn't going to help you, but that's my opinion, I been a dodge tech for 17 years but anything is possible with cars......
Posted on Jun 15, 2012
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