Question about 1992 Ford Crown Victoria

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My transmission shifts fine gears one to three. It doesn't go into 4th however. I don't think it's slipping, instead power to the wheels suddenly disappears. If I put it in the regular D I can drive the car. This problem only occurs when the car is put to overdrive D.

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  • Ford Master
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The transmission will have to be pulled and rebuilt to fix this problem.
I don't think a simple fluid change will fix it.
Good luck to you.

Posted on Jul 08, 2010

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1 Answer

When trans shift from 3rd gear to 4th gear it act like it shifts into neautral and slips


You need a transmission rebuild. Whether this is an automatic or manual you need the transmission rebuilt.

Jan 24, 2016 | 2005 Chevrolet Chevrolet TrailBlazer EXT...

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My 2005 Pontiac Bonneville GXP will not shift into 4th gear I was to it was a fourth gear band but is that the only problem that will cause itI'notto shift into 4th gear


Which transmission does yours have 4T65-E or 4T80-E ?

4T80-E
No Fourth Gear

Checks

Causes

1-2 Shift Solenoid Valve
?€¢
Inoperative
?€¢
Debris
?€¢
Pinched wires

3-4 Shift Valve Bore Plug

Misassembled

4th Band

Burned, slipping, missing

4th Servo Cover

Cracked

4th Servo Pin

Broken, seized

4th Servo Piston

Damaged

4th Servo Seals

Rolled, cut or damaged
4T65-E
Slipping or No Fourth Gear
Slipping or No Fourth Gear Checks
Cause

DEFINITION: A large engine RPM increase is noted in fourth gear, Drive range, with little or no vehicle forward speed increase. First, second, and third gear operation are normal. Shifts into fourth gear are soft or do not occur. Fourth gear ratio is 0.705:1.

Automatic Transmission Fluid Level
Low fluid level

Transmission Main Line Pressure
Low transmission main line pressure

Oil Filter Assembly
• The oil filter assembly (100) is missing, plugged, or damaged.
• The oil filter seal assembly (101) is missing or is damaged.

Control Valve Body Assembly
• The 3-4 shift valve (362) or the 4-3 manual downshift valve (360) is stuck or binding.
• Debris is found in the passages of the control valve body (301) or of the control valve body spacer plate and gasket assembly (396)

Case Cover Assembly
Distortion or damage occurs at the manual valve (404) or at the case cover (401), causing PRN oil leak.

Driven Sprocket Support Assembly
A plugged third clutch oil passage in the driven sprocket support assembly (609)

Fourth Clutch Assembly
• The clutch plates (500-502) are worn, damaged, or misassembled.
• A missing or not seated fourth clutch spring retaining ring (601)
• A damaged spring assembly (602) or piston (603)
• Worn or damaged fourth clutch piston seals (604, 605)

Third Clutch Sprag Assembly
• The sprag (720) was misassembled or backwards on the inner race (661).
• A damaged third clutch sprag assembly (653, 661, 719-721)

Dec 06, 2015 | Pontiac Cars & Trucks

1 Answer

My 2001 jeep grand cherokee wont shift into 4th it only goes to third what would cause the 4th gear to not engage


There are several things that could cause that.
> Replacement transmission not equipped with overdrive
> Overdrive solenoid in replacement transmission defective
> Overdrive control circuits damaged or loose pins or connections.
> Gear shift linkage or cable out of adjustment
> Transmission range sensor malfunction or out of adjustment

Since you have a computer-controlled transmission, it would be better to ask the onboard computer that question....you will probably get a much more definitive answer.

Apr 18, 2012 | 2001 Jeep Grand Cherokee

1 Answer

What could be wrong with Transmission?


Hello
1st let me explain how the transmission in this car is shifted, there is a computer control module, it is called the "Powertrain Control Module" or PCM, some cars have a separate computer that is just for the transmission, this is a TCM, your cars PCM does both jobs of running the engine and shifting the transmission. The actual shifting is done by electric solenoids inside the transmission which the PCM controls by grounding them, when the computer determines it is time to shift based on vehicle speed and transmission fluid temperature and other inputs from the engine sensors it grounds the proper solenoid that shifts the transmission up or down to the appropriate gear, it monitores the shift electronically and if it doesn't see that the transmission has done what it was commanded to do it sets a fault code in its memory. I have read your problem and no mention is made that "Your Mechanic" scanned the system for fault codes, if he did and nothing shows up then you have a mechanical fault in the transmission and it will need to be torn down and rebuilt to correct this shift problem.
My experience is 25 years as a Ford factory trained repair and diagnosis technican.

Nov 04, 2011 | 2004 Mercury Mountaineer

2 Answers

Code p0734 I just replaced eng. and trans. now have this code.


Engine Light ON (or Service Engine Soon Warning Light)
- Incorrect transmission shifting Possible causes - Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit Tech notes Start by inspecting the transmission fluid level and condition, and change fluid if necessary. When is the code detected? P0734 is detected when A/T cannot be shifted to the 4th gear position even if electrical circuit is good. P0734 NISSAN Description This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by Transmission Control Module (TCM) as follows:

Torque converter slip ratio = A x C/B

A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from Engine Control Module (ECM)
C: Gear ratio determined as gear position which TCM supposes

If the actual gear position is higher than the position (4th) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.

Aug 09, 2011 | 1995 Nissan Altima

1 Answer

Its 2 wheel drive, but the transmission won't shift unless you manuallyl put the gear shifter in low then work your way up to get the gears to change. The gears work fine it just won't change on its on. If...


Trans shifts into gear harshly, car feels sluggish off the line, No 1st, 4th or TCC lockup available, Manual 2nd, 3rd and Reverse are only available gears, CEL is on: Transmission is either in limp-home mode or has lost electrical power. If there are lots of error codes in the PCM, check the under-hood fuse that powers the transmission, and if it pops again, look for a short in that circuit like an O2 sensor harness touching exhaust. Otherwise, check PCM codes for a particular fault in the transmission causing the PCM to put it in limp-home mode.

No 1st or 4th available; trans shifts 2nd to 3rd by itself in D or OD and locks the converter : ShiftA solenoid failed. Easy fix in the pan. Or a wiring problem from PCM to trans.. or PCM.

Car goes into gear but feels very sluggish like the brakes are dragging, but it will roll easily (starts out in 4th gear), you manually shift to 2 to get it moving, once it's moving you put it back in OD and the car shifts 3rd to 4th on its own and locks the converter at the appropriate time: ShiftB solenoid failed: Easy fix in the pan. Or a wiring problem from PCM to trans.. or PCM.

Good luck and keep me posted, there are other things but these things mentioned seam like what you described.

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2 Answers

Transmission?


definitely something in the tranny

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no power stuck in 3rd gear electric shop unless youve burnt it up good luck...www.TransmissionGarage.com

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1 Answer

4l60e no forward or reverse gears operating


It sounds like your torque converter or the pump is broken.

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