Question about 1991 Cadillac DeVille

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1991 cadillac will not shift up to drive or over drive ???

2 trannys same problem

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You need vaccuum to the modulator for that. or new modulator.

Posted on Jun 20, 2010

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My 92 cadillac deville shift at 30 miles per hour and again at 60 do you think its my transmission speed sensor


its very possible ,that's where tranny gets info to shift all your main gear shifting should be done by 35 mph and after 55 is overdrive the other is if you take it for a drive and manualy shift it out from lowest gear to highest and see how it functions, so you can feel the shifting advance then try it again just in drive only and see if you can feel the gears shift out , have you serviced tranny ? is it a high millage car it is 23 years old ,

Feb 22, 2015 | Cadillac Cars & Trucks

2 Answers

1991 Cadillac 409 engine won't shift out of Park


Lets start by checking your brake light switch.
Your car has a switch on the brake pedal that not only makes the brake lights come on, but also tells the transmission it can shift out of park.
This really may be 2 separate switches, but should be under the dashboard and both should "open" when you push the brake pedal down.
Take a good flashlight and look.
The switches are small, about the size of your thumb, and both should have 2 wires attached to them.
Be blessed.

Feb 22, 2013 | 1991 Cadillac Seville

2 Answers

1991 camry v6-tranny shifts hard going into reverse and drive


Your engine or transmission mounts are worn. Have them looked at.

Jun 15, 2011 | 1991 Toyota Camry

1 Answer

Where is the shift solenoid located at on a 1991 cadillac eldorado? having problems shifting in to high gears. how hard is it to replace?


with age of car many things cud be worn on trans--do a pressure chec for any internal leaks--may just need a trans fluid change or a tv valve ajust etc --automatics are very complicated-get a book or ask a reputable tech to test drive

May 02, 2011 | 1991 Cadillac Eldorado

2 Answers

1994 Cadillac Deville - won't shift into reverse after sitting overnight or for a couple of hours. Will shift into 1st and then will shift into reverse. What is causing this?


Check the transmission fluid level, reverse needs twice the pressure to activate that drive does. If low refill and try again. If fluid good, I`d say the tranny 3rd reverse clutch is worn out. Recheck the condition of the fluid on the dipstick, if it appears burnt or very dirty I`d still suspect internal tranny clutch issues. It also has a low reverse clutch, but goes into 1st gear as you said.

Feb 02, 2011 | 1994 Cadillac DeVille

1 Answer

Why does my car Quit runnin when i put it into gear ? my car is full of gas but when i shift into drive my car shuts down and quits runnin.


ok try this put it in park and reeve the engine see if it has a miss or bogs down see if a fuel problem/airproblem or tranny problem thencome back and post again letting me know

Sep 24, 2010 | 1991 Cadillac DeVille

1 Answer

Tranny slips in reverse


Reverse clutches are burnt. Clutch material is getting into valve body causing late shifts since valves can't move. transmisison will have to be overhauled. wish i had better news. sorry

May 01, 2009 | 1991 Mercedes-Benz E-Class

1 Answer

1991 Honda Accord tranny not shifting..


the first thing that needs to be checked is the fluid level. it may have a leak and has now gotten too low to move car. check the trans oil dipstick with vehicle running in park on flat ground. if it is low, top it off with dex lll trans oil and see if it moves better. if restored to normal shifting, ck for leakage. dont fix the leak first without checking for normal shifting down the road, you could be wasting time and money if any damage has occurred.

Nov 15, 2008 | 1991 Honda Accord

1 Answer

Can't transfer to 4L or neutral mode


Transfer cases can be quirky. I've got a 91 Wrangler, an 86 Cherokee and a 75 Blazer. When I go from 2WD to 4WD, they each have their own personality.

There are a number of things I've learned to persuade a stubborn xfer case to shift.

Try mixing these :
  • Engine running, vehicle not moving
  • Engine off, Shift Xfer case, Restart
  • Tranny in neutral
  • Shift Xfer case 'N', Tranny in gear, Tranny in neutral, Xfer case to 4HI or 4LOW (as long as you feel it register), Tranny in gear, try to move
  • Shift Tranny to Reverse, roll a few yards
  • Lock/Unlock the Hubs
To get back to 2WD:
  • Drive for a few feet in a straight line
  • Unlock the hubs
  • Tranny Neutral
  • Shift xfer case
Let me know how it turns out.
Mike

Jul 27, 2008 | 1991 Jeep Wrangler

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