Question about Ford Mustang

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73 mustang c4transmission no shift no rev no fw

Live for 6 weeks and now no reverse no forw oil ok

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  • Ford Master
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There is a trans. vacuum shift modulator on the side of the trany.. Look for a vacuum line going to it.. 90% of the time your problem is caused by it going out. Unscrew it and replace after you have checked for vac leaks in line and at connector. Car would run rough if you had a simple vac leak. Hope this helps mike.

Posted on Nov 20, 2014

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Posted on Jan 02, 2017

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trevino1970
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SOURCE: 95 mustang v6 auto no forward gears but works in reverse had ****** rebuilt and same thing

Maybe your differential is shot and will only allow reverse spin or the transmission was not really rebuilt professionally. Was the transmission checked outside of your car after rebuild? Does your vehicle have a Powertrain Control Module (PCM)? Maybe the module went bad or faulty.

Posted on Jun 26, 2012

nobody322
  • 20706 Answers

SOURCE: 01 sunfire GT, 2.4L, AT, tranny can shift into reverse, but only from Park works, when i shift into reverse from neutral, the engine would rev up, but the car is in still. Changed tranny fluid, same p

check fuses.
connect any scan tool see if there ARE DTCs (errors) set for a/t
then get the cable adjusted. to spec.

if there are DTC, see how to diagnose each in the FSM. book.
each error is covered.

what works and does not post all./
P
R
N
D
L.
all fails some work ?

Posted on Jun 25, 2014

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1 Answer

I have a 2014 Nissan Altima that won't go or reverse could that be the transmission module???


car is only two year old

wont select reverse of revs out in reverse?

module says std automatic and not a CVT transmission
when a module goes into fail safe you always have reverse and third

check oil level first
wont select
check shift cables or linkages adjustment shift stick alignment

revs out
more likely a solenoid or mechanical failure
if there is a bang as you shift into reverse its the oil pump

if none of the above are the cause
could be the module ......not sure on that





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I recently gave to my 73 mustang mach one automatic ****** service that includes changing the oil and filter, the ****** was previously working ok, but now the trans wont change from first to seco


I don't think it's in your linkage. It sounds like you may have a cracked or disconnected vacuum line leading to your vacuum modulator. Or you may have a fauly modulator. Check for leaks first...At the back of the motor on the passenger side there should be a small (in diameter) vacuum line comming from the carburetor to a metal line leading down and back toward the rear of the car. Then at the back of the trans there should be a small vacuum line leading toward the front of the car to a small metal line. If one or both of those vac lines are loose os broken thats most likley your problem. If not it's more likley the modulator.

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1 Answer

95 mustang v6 auto no forward gears but works in reverse had ****** rebuilt and same thing


Maybe your differential is shot and will only allow reverse spin or the transmission was not really rebuilt professionally. Was the transmission checked outside of your car after rebuild? Does your vehicle have a Powertrain Control Module (PCM)? Maybe the module went bad or faulty.

Jun 18, 2012 | Cars & Trucks

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Mazda wont go foward or reverse.


If you are lucky, you are just out of transmission fluid. Add fluid to refill the transmission to the mark on the dip stick. Afterward, you need to determine where the old transmission fluid leaked out and fix the leak. If refilling the transmission does not fix the problem, you then need to look at fixing the transmission. Are you sure the shift linkage is ok?

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My 2004 mustang is shifting hard into rev. and 5th sometimes it seems to not go into n. what could the problem


your tranny synchronizing bearings are going out most likely. usually it starts getting hard going into reverse then sometimes into fifth and grinds as it gets worse. something to help with it will be when you first start the car just put the car in 5th gear before you go into reverse that allowsyour bearing to align and ussually allows it to go in more freely.

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1 Answer

Starting to shift hard in to Rev and 5th gear grinds going into 5th and sometimes just will not go into Rev. 2004 mustang.


Sounds like you need a clutch and its possible you have a problem with the shift rail engaging.

Jun 24, 2009 | 2004 Ford Mustang

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