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'65 Buick st300 transmission - problem: harsh shifting into drive from neutral. Engine not at fast idle, switch pitch switch adjusted properly and operating with just a touch of the accellerator pedal. If trsnsmisssion is in reverse, shifting quickly into Drive is smooth. Fluid level right on, filter recently changed. All other shifting is smooth.

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6ya6ya
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Posted on Jan 02, 2017

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csmock132
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SOURCE: 1993 Chevy Silverado

Replace the vehicle speed sensor, it's located in the tailhousing of the transfercase

Posted on Feb 27, 2009

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emissionwiz
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SOURCE: 2008 Ford f-250 4x4 transmission shifting problems

there is the lemon law, has the factory field service Representative gotten involved in these repairs? if not do so, i am a 25 year veteran of a Ford service dept, i know how it works, I will say that by and large the Ford trucks are the beast aropund, sorry for your problems.

Posted on May 05, 2009

  • 3 Answers

SOURCE: Shift problems in 95 chrysler concorde transmission

Sorry but if your reverse is having trouble you will probably have to replace or rebuild tranny like me. Otherwise try new filter and fluid first.

Posted on Jun 06, 2009

  • 1 Answer

SOURCE: Transmission won't shift into drive/check engine light is on.

Can you message me what they decided this was. We had this same problem after church, today, though we have an automatic transmission

Posted on Jun 28, 2009

  • 432 Answers

SOURCE: while driving we have an accellerator pedal in a

Well this is 15 years old.You may have varnish buidup in the throttle body causing it not to alow it to close.Your shaft on the throttle body may need lubed as well as your throttle cable and peddal.Unless it just takes off full throttle and not just holds the speed as if it was on cruse controll.Well this is my best guess at this point.Hope it helps and good luck.

Posted on Mar 14, 2010

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1995 mercury 150 horse runs great idols great but very slow .when put in reverse quits seems like to slow idol . what screw do i turn for fast idol


Seems like your are describing a outboard motor. If so, the Boat section of Fixya may have more experts that you need. You would want to avoid turning any screws on the carburetor body. The externals on the linkage have some adjustments like throttle stops.

The linkage on boat shift mechanisms are tempermental. They usually combine 2 functions on 1 control lever. They are synchronized that when the transmission shifts from neutral to forward and neutral to reverse the idle speed is low. This keeps the gears from grinding and takes the shock out of the shifting process.

Another thing different than on a car engine is the effect of the propeller on engine rpm. You can change the "in gear"
rpm for both directions by changing prop size and/or pitch.
This also means you can over-rev the engine by having the wrong prop on the boat. There are engine rpm "stops" for the high end too, but some just rely on using the correct prop. As what you may be experiencing with a "stall" can be brought on by

A word of caution. The inboard/outboard engines can have the same problem as outboard engines. The shift levers are synchronized with a pivot system and adjusting the throttle can interfere with the shifting.

You may be able to view youtube videos by searching for these topics.

Mar 01, 2018 | Mercury Cars & Trucks

1 Answer

My 2001 Jeep Grand Cherokee wont start sometimes, but if I put it in neutral then try to start it..It starts .. What is the problem with my baby.......


Test/Service/Replace

The circuit on newer cars with automatic transmissions has a neutral safety, or neutral start switch installed between the ignition switch and the starter. The ignition switch cannot operate the starter motor unless the transmission is in park or neutral.
Late model vehicles with manual transmissions have a starter/clutch interlock switch that requires the clutch to be depressed to the floor.
Neutral Safety Switch
Normal operations of a neutral safety switch provides a quick check for the adjustment of the gear selector linkage.
  • To do this, move the selector slowly until it clicks into the PARK position.
  • Turn the ignition key to the START position.
  • If the starter operates, the PARK position is correct.
  • After checking the PARK position, move the lever slowly toward the NEUTRAL position until the lever drops at the end of the NEUTRAL stop in the selector gate.
  • If the starter also operates at this point, the gearshift linkage is properly adjusted.
  • This quick test also tests the adjustment of the neutral safety switch.
  • If the engine does not start in either or both of these positions, the neutral safety switch or the gear selector linkage needs adjustment or repair.

CAUTION
Since you must work under the vehicle to adjust most shift linkages make sure you properly raise and support the vehicle before working under it. Also, wear safety glasses or goggles while working under the vehicle.
A voltmeter can be used to check the switch for voltage when the ignition key is turned to the START position with the shift lever in PARK or NEUTRAL. If there is no voltage, the switch should be adjusted or replaced.

Jan 26, 2013 | 2002 Jeep Grand Cherokee

1 Answer

I have a 1995 YJ with 2.5 engine 5 speed man trans. I am trying to find the neutral safety switch if it has one Thanks


Click image for zoom...

zjlimited_1448.jpg

Fig. 1: Park/neutral position switch and manual lever

The switch is mounted in the transmission and has no direct adjustment. Proper operation is determined by correct shift linkage adjustment.

  1. Raise and support the front end on jackstands.
  2. Place a drain pan under the switch.
  3. Unscrew the switch from the transmission.
  4. Replace the switch, using a new seal. Tighten the switch to 24 ft. lbs. (33 Nm).
  5. Refill the transmission.
Hope this helps (remember to rate this answer).

Jun 21, 2011 | Jeep Wrangler Cars & Trucks

2 Answers

1991 camry v6 - auto tranny shifts hard going into reverse and drive but otherwise shifting normal through the gears while driving.


Make sure your transmission fluid is fully topped up. If the transmission has to speed to build up fluid pressure there will be jolt as the drive is engaged from neutral. Make sure you fill up with the right fluid (use the transmission dip stick tube as the fill point). Also when measuring transmission fluid level have the engine running in 'park'.

Jun 15, 2011 | 1991 Toyota Camry

2 Answers

I have a 1992 Chevy pick up 1500 series. 350 engine. The idle is running low on it, were and how can I adjust it?


If the vehicle has a automatic transmission, check the Neutral Safety Switch. If defective from wear it could be sending incorrect signals to the Electronic Control Module which in turn sends signals to the Idle Air Control. It will make the computer think the transmission is in gear and lower the RPMs and then when the transmission is actually in gear the physical load will lower the RPMs even more. To check, set the parking brake and move the gear selector to Neutral and check the RPMs to see if the engine maintains a constant 650 +/-. Next, shift to Drive and check if RPMs drop to and maintain 500 +/-. If it does then you have diagnosed the problem. The original equipment Idle Air Control motors rarely wear out.

Aug 05, 2010 | 1992 Chevrolet K1500

2 Answers

How to replace neutral saftey switch on a 1980 cadillac deville?


Use like reference guide for GM Cadillac 1967-1989 Repair Guide Neutral Safety Switch - REMOVAL & INSTALLATION

All Except 1985-89 Eldorado and Seville
See Figure 1
The neutral safety switch prevents the engine from being started in any transmission position except Neutral or Park. The switch is located on the upper side of the steering column under the instrument panel on column shift cars, and inside the shift console on floor shift models.
  1. Remove the console for access on floor shift models.
  2. Disconnect the electrical connectors.
  3. Remove the neutral switch.

To install:
  1. Place 1967-70 column shift lever models in Drive, and 1971 and later models in neutral. Locate the lever tang against the transmission selector plate on column shift models.
  2. Align the slot in the contact support with the hole in the switch. Insert a 3 / 32 in. (2.38mm) diameter pin in place. The switch is now aligned in Drive position.

1973 and later neutral safety switches have a shear-pin installed to aid in proper switch alignment so that insertion of a pin is unnecessary. Moving the shift lever from Neutral shears the pin.
  1. Place the contact support drive slot over the drive tang. Install the switch mounting screws.
  2. Remove the aligning pin. Connect the electrical wiring, and replace the console.
  3. Set the parking brake and hold your foot on the service brake pedal. Check to see that the engine will start only in Park or Neutral.
7b3f2a9.jpg

Fig. 1: Installation of a common neutral safety switch



ADJUSTMENT
See Figure 2
1974 and later cars do not have a neutral safety switch. Instead, these cars have an interlock between the lock and the transmission selector, which is non-adjustable.
  1. Place the shift lever in Neutral.
  2. Move the switch until you can insert a gauge pin, 3 / 32 in. (2.38mm) diameter, into the hole in the switch and through to the alignment hole.
  3. Loosen the switch securing screws. Remove the console first, if necessary.
  4. Tighten the screws and remove the pin.
  5. Step on the brake pedal and check to see that the engine will only start in Neutral or Park.
05843d3.jpg


Fig. 2: Adjustment of a common neutral safety switch


1985-89 Eldorado and Seville
See Figure 3

All neutral safety/back-up light switches come with a small plastic alignment pin installed. Leave this pin in place.
  1. Place the shifter assembly in the Neutral position.
  2. Remove the shifter lever-to-switch nut and the lever.
  3. Disconnect the electrical connector from the neutral safety/back-up light switch.
  4. Remove the neutral safety/back-up light switch-to-transaxle bolts and the switch from the vehicle.

To install:
  1. Position the shifter shaft in the Neutral position.

If using an old switch or the plastic pin (new switch) is broken, install a3/32in. (2.38mm) diameter pin gauge (drill bit) into the neutral safety/back-up light switch; the switch is then locked into its Neutral position.
  1. Align the flats of the shifter shaft and the neutral safety/back-up light, then, align the switch-to-tang on the transaxle. Torque the switch-to-transaxle bolts to 22 ft. lbs. (30 Nm). Remove the pin gauge.
  2. To complete installation, reverse the removal procedures. Make sure that the engine starts only in the Park and Neutral positions.
c796664.jpg

Fig. 3: Neutral start and back-up lamp switch - 1985-89 Eldorado and Seville

Hope help with this (remember rated and comment this). Good luck.

Mar 21, 2010 | 1980 Cadillac Deville

1 Answer

Won't start unless you jiggle the shifter lever


You either have a neutral safety switch that is going bad or isn't properly adjusted. Switch is on the transmission just under where the shift cable attaches.

Dec 22, 2009 | 1992 Buick Century

1 Answer

During driving the transmission switches to neutral (Lexus RX300)


Your tranny need to be repaired at once. The tranny is slipping. Some Lexus owners do have the similar problem including myself.

May 18, 2009 | 2002 Lexus RX 300

1 Answer

Transmission , idle, check engine


My 1st suggestion would be to get a scan done for the check engine light. I'm not talking about a simple 'code reader' but an actual scan tool so all of the different sensors and perimeters can be read. You will need to get one or find someone with a scan tool which can do OBD I vehicles.

If the engine isn't running correctly this could cause the transmission not wanting to shift. 2 vehicles that come to mind where I've seen this happen.

One was a Pontiac and it wouldn't shift into overdrive. Problem was the thermostat which was stuck open and it wouldn't allow the engine to get up to proper temperature which kept the transmission from shifting.

The other was a Ford Explorer that the lady thought for sure the transmission was bad. After a test drive and investigation it was found the catalytic converter was mostly plugged which wouldn't allow the engine to achieve the proper torque and RPMs to get the transmission to shift.

Now granted neither of these examples are an exact duplicate of the problems you are having. They are simply to illustrate that engine performance (or the lack of) CAN affect the way the transmission shifts.

Hope this helps.

Sep 28, 2017 | 1991 Buick Century

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