Question about 1999 Buick Park Avenue

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THE TRANSMISSION IS NOT CHANGING THIRD GEAR AND IT IS NOT SENDING A CODE.AND IT IS NOT SLIPPING.

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Ck trans, fluid, also look to see if it's dirty. The manufactures recommend changing fluid after so many miles. I've never changed mine but I should. If you change it change the filter too.

Posted on Sep 01, 2010

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Posted on Jan 02, 2017

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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

Transmission slipping in third gear


There is a point that a machine works and a point that it stops, you need a transmission rebuild.

Aug 30, 2017 | 1993 Mitsubishi Galant

1 Answer

I have a 1999 Chevrolet Silverado with automatic transmission. When the transmission is shifting from first to second gear it jerks really hard like a thrust when changing.


have it scanned, probably has a code 1870 (transmission component slipping)
means torgue converter is slipping beyond specs, actual casue is valve body is wore out causing pressure problems

Jun 03, 2011 | 1999 Chevrolet Silverado 1500

2 Answers

Mercedes benz 260E gear slipping


Try changing the fluid in the transmission first this may solve it, if you are not sure when it was changed.

Jul 18, 2009 | 1987 Mercedes-Benz 300-Class

1 Answer

Code p0733, p0717


P0733 Trany Ratio in gear 3. This is a trany fault code and the first thing you should check is your tps sensor using your DVOM meter. Measuring the voltages between idle and WOT (wide open throttle), there should be no interruption in the reading (or glitches). Otherwise, it can play havoc to your shifting cycles which can cause this code P0733. If there are glitches, replace the tps sensor right away and reset the code. If trany is suspected, most common fix for this points to a defective valve body. To verify, it can be done by using a scanner which has the capacity to command the trany solenoids so it can be tested at various trany operating pressures. P0717 is a improper signal from your pules generator A. Which is a the turbine speed sensor on the transmission, You have two of them, the A reads the speed of the input shaft of the transmission and the B sensor reads the output shaft of the transmission. I know with the P0717 it will put the transmission in the limp mode and will not shift past 3rd gear and if your running the transmission hard on third you may have triggered the P0733 which is the 3rd gear slipping. Check the transmission fluid and make sure you have not burnt the fluid, if the transmission fluid is burnt you may want to have a transmission repair shop replace the turbine speed sensor (Pules Generator A) and the fluid and filter. Cross the fingers and hope the transmission was not ran to hard in third causing damage to the third gear clutch packs. Good luck and keep me posted, be glad to help.

Jun 15, 2009 | 2002 Hyundai Accent

1 Answer

Transmission seems to slipping.... While driving on a level road at 120-km//hr my car suddenly **** or slippping.The engine rpm increases but the speed decreasses.I feel that the gear shifting at least...


Dear vdizon it seems your bearings are slipping inside your transmission.
This is usually caused by inproper use or stress to the transmission. Changing gears at high revs and double clutching may have caused the bearings to wear, or a service on the gearbox has not been performed by factory recomendation. I advise you to book your car into your mechanic to confirm the problem before the proble escalades.
I hope this has helped you.

Apr 08, 2009 | 2002 Kia Sedona

1 Answer

Transmission problem


I will be trading in car or fix by dealer . NICO club more helpfull thanks anyway.

Sep 12, 2008 | 2004 Nissan Sentra

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