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Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

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Old 01-17-2008
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awful whine

well about 2 days ago with me ridin around town i heard a high pitch whine as i was going 20 to 30 mph then it would get really low. I got up today and checked my trans fluid which was ok but i changed it anyway, now it sounds like a jet fighter taking off in my truck from 50mph and up...and the fluid level is fine and i used mercon like my hanes told me too...it also does it when im rolling to a stop with the clutch pressed or not pressed in...what could it be
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Old 01-17-2008
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Could be your rear diff.
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Old 01-17-2008
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i would i check if it was my rear diff
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Old 01-17-2008
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im starting to think its my rear since the noise continues during gear change...
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Old 01-17-2008
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Yeah its your rear end i had mine do that about 2 years ago and i was goin like 65 down the freeway and wham it blew up shattered the diff casing and sheered all the splines off the shafts it was a huge mess and a huge check it was 1600 to fix i needed a whole new rearend and i was dumb and just get a junkyard one! What it is that there is moisture in your diff get a new gasket, drain it and open it up and make sure everything is in spec and clean it the best you can and put it back together and fill her back up and you should be good!!!
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Old 01-17-2008
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Quote--..."and the fluid level is fine and i used mercon like my hanes told me too...it also does it when im rolling to a stop with the clutch pressed or not pressed in...what could it be".

You say you put Mercon oil in your manual transmission?? Mercon oil is for automatic transmissions. If that is what you did you need to replace it with 85w90 gear oil. Your rear end also uses 85w90 gear oil and if it is L/S it needs a special additive.
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Old 01-18-2008
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I had this noise on a 94 4x2 . It was the u-joint at the differential . I could have sworn it was the diff itself. The joint was still tight but when I took it apart there was zero lube inside.
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Old 01-18-2008
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Quote:
Originally Posted by Ranger Carl
Quote--

You say you put Mercon oil in your manual transmission?? Mercon oil is for automatic transmissions. If that is what you did you need to replace it with 85w90 gear oil. Your rear end also uses 85w90 gear oil and if it is L/S it needs a special additive.
These trannys call for Mercon , you're thinking of transmissions from years gone by that used gear oil ( that never had to be changed for the life of the truck).
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Old 01-18-2008
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i used mercon atf....and its not my u joints i jus changed those 5000 miles ago...really thinking its my diff but i gotta drive to school today so hope she holds up to a 40 mile trip
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Old 01-18-2008
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"now it sounds like a jet fighter taking off in my truck from 50mph and up"



Could it be your fan clutch is stuck, making the fan run at full engine speed?

You should be able to tell that, by revving the engine by hand with the hood open.
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Old 01-18-2008
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Yep u need to check your rear end......My buddy had it happen to his pickup.. it shattered the rear end and blew a baseball sized hole in the pumpkin...damn was that expensive.....better get it checked ASAP!!!
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Old 01-18-2008
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well it did fine on the way to school, then i deicded not to go (not doing anything today) and stopped by my moms store and sat there 20 minutes then all the way home from 50 or so up it did it...not as bad but u could barely hear it over the dumped flow...even with the clutch it you could hear it so guess it is my rear end..its not even 30 here yet so if it warms up any im going to check it then go to my locla junkyard and look for a 8.8 with 4.10s and a ls...then slap it under it since i been wantin to for a while now

will any explorer axle work and whats the numbers for a 4.10 with ls
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Old 01-18-2008
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lol or could jus read the axle code sticky
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Old 01-18-2008
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Well, howdydo, I went and looked in my Ford Factory shop manual for my 2003 Ranger and lordy it does call for Mercon oil. Well, that should make them buggers shift lots better with 10w oil in them. WOW I had no idea they did that. What year did they start using Mercon in manual trannys?

Man, that would have made my old '66 Mustang top loader shift like butter, untill it blew.
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