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When a sufficiently high RPM is reached then the weights hit stops and do ... There are two shift valve assemblies, one for the 1-2 shift and the other for the 2-3 shift. .... Thehigh RPM factory governor appears to have about 1/3 less metal in the ...
Oct 2, 2012 - Thread: Possible Transmission Issue - weird shift points/high RPMs ... throttle pressure, but seems to blow past the 1st gear shift point and revs up to 4500 RPM or so then shifts. .... The 1 - 3 shifts actually felt pretty natural.
Its a manual trans right? Those are probably worn syn rings in the transmission, or a loose throw out bearing on the clutch. but if it was a throw out bearing it should be happening in all gears. So its probably worn sync rings in the trans. this means you need your trans rebuilt. go to a local trans shop. to make it shift easier for now, try to match the speed of the car with the speed of the engine. what i mean is when upshifting to 5th gear, wait for a sec til the engine drops in rpms to shift (wait til the rpms are they would be right after you shift into gear). This will allow you to shift without syncs, and make it an easier shift. don't worry its easier then it sounds. but best to get it fixed
Manually shift thru all gears up & down the scale. Try adding Motorcraft Additive Friction Modifier, available from Ford parts dept. This REALLY STINKS!!! Don't get any on you. Pour into trans fluid. Drive a few miles shifting manually thruthe gears, then do a normal start stop drive several times. This will luburcate trans, normally used for differential but has worked in automatic transmissions of all makes for years. Otherwise mechanical problem for transmission repair facility.
The problem is most likely a PNP(shift position switch) problem. When this happens, the trans goes into limp home mode. The trans goes into high gear and doesn't allow any shifting up or down. This is to protect the trans.
With normal acceleration the 1st to second shift point should be around 2500-3000 rpm. Most of your shifts under moderate acceleration will take place at this same point or when there a light load on the transmission. Under hard acceleration the RPMs will climp higher due to increased power needs and the computer will shift when less power is needed or the RPMs climb to an unsafe speed say5000-6000rpms (depending on where yours redlines). Also going up a steep hill will raise the RPMs higher and goind down a hill will cause a faster shift at lower RPMs. These can always be altered by an individual owner by adjusting shift points, using performance parts and if you have problems (low tranny fluid/trans issues). Your trans RPMS are fine and will vary depening on how your foot accelerates. The shift pattern should be the same every time you drive slow/medium/fast/, look for changes in those patterns you will also catch a problem early.
your transmission has a vacumn modulator on the side it requires vacumn from the engine to shift make sure the vacumn hose from the trans to the engine is plugged on and working, if that is correct then step 2 is the governer which would require a tranny shop to check, but id bet on the vacumn line give it a try! good luck and thankx billy