Question about 1999 Mercury Grand Marquis

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When i drive within a low speed the the gear shifting from third to fourth is not done correctly it is seem like it be in N then it is get in in other worde there is a gap between these two speeds BUT it is not happen within high speed

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Sounds like your lock up torque converter is cycling between gears due to pressure. When was last trans fluid & filter change? I'd start there.

Posted on Mar 22, 2011

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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

Why when i put in drive and go it goes into 1 or2 or drive by it self while driving


It always starts out in first, it's a 3 speed automatic, that's what automatics do. they start out in first and at about 15-20 miles per hour , they shift to second gear, and when the speed is about 35-45 MPH, the transmission automatically shifts into third gear, or Drive.

Bigger automatics have 4 or more speeds. Till recently, 4 speeds were the norm, and fourth gear was often dubbed Overdrive, as it allowed the engine to run slower in 4th gear, than it had to maintain speed in 3rd gear, drive. It's good, it increases your mileage per gallon of gas, so you save that way, but like all things more complicated, they cost more to fix when something goes wrong.

Nov 27, 2015 | 2003 Hyundai Santa Fe

1 Answer

2005 chevy malibu has a slight jerk feeling when it is in 4th gear going at a constant speed and I can notice a slight bounce on the rpm gauge. Also if in low range using plus and minus buttons, when...


Sounds like a tooth missing of the fourth gear, check trans sump for metal filings or pieces. if auto, adjust bands and check/change fluid and filters. as well.

Aug 03, 2014 | Cars & Trucks

1 Answer

Grinding clutch


I'm a little confused on your description of the noise. If I understand you correctly It is making the noise when it shifts smoothly into gear but at the same time it makes a grinding noise ? It possibly can be synchronizers if the grooves on the inside of the synchronizers are worn bad enough to where the gear isn't slowing down enough causing a grind as the clutching teeth on the gear mesh with the synchrode and the shift collar.
If it is making noise in all gears except 4th you may have countershaft brgs failing. The power flow in 4th gear goes directly through the mainshaft and has a 1 to 1 ratio. All other gears the powerflow goes through the countershaft causing a load on the countershaft so if you have bearings failing in the countershaft you will hear noise in all gears but 4th.
i hope I understood you correctly .

Jan 18, 2014 | 2002 Subaru Forester

1 Answer

How many times does a transmission supposed to shift starting from drive in a 1988 dodge ram with a 318 motor


Depends if you have a regular 3 speed automatic, or a 3 speed with overdrive.
Put it in drive, it will start out in first gear, then shift into second at about 15 MPH, into third at about 30-35 MPH. With overdrive, fourth gear will kick in at about 45-55MPH.

Oct 07, 2013 | Cars & Trucks

1 Answer

Downshifts from 4th gear to 3rd while driving


check the engine light problem ......trans speed sensor ?

Mar 07, 2012 | 2005 Mazda 3

1 Answer

92 A500 transmission


You have a short to ground in the internal wiring harness.The first thru third shifts are done hydralicly.The SMEC then applies a ground to the overdrive solenoid for fourth gear and the TCC solenoid for torque converter lockup.

Aug 16, 2009 | 1992 Dodge Dakota

1 Answer

Transmission won't shift into high until hot


sounds like a sticking shift solenoid have trans. serviced and check i would recomend factory fluids

Jul 10, 2009 | 1997 Dodge Ram 3500 Club Cab

2 Answers

Volvo 240 GL Transmission


You have an overdrive relay issue. The tansmission is really a four-speed box, but the OD selector either locks our fourth gear or allows the car to shift normally into fourth. I use the OD on my volvo all the time, because the revs drop in half when the OD is activated, The relay is located behind the glove box, toward the center console. $10 buck on Ebay and your transmission should shift correctly again. I would try that BEFORE more expensive fixes, like OD solenoid $200 or transmission control module. Just for kicks a picked up a spare ECU on Ebay for $10 because these get costly if and when they go. Easy fix, though, a couple of plugs.

Jun 12, 2008 | 1989 Volvo 240

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