Question about 1993 Buick LeSabre

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It is jerking when i get above 50

It is jerking when i get above 5. I have changed the transmission fluids and put a new control moduler on it

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  • Zaraki May 11, 2010

    When was the last time that the fuel filter was changed?

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  • 154 Answers

Catalytic convertor maybe clogged.

Posted on Apr 23, 2010

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3 Answers

What could be causing my 2003 grand am to jerk in first gear and sometimes when I put it in reverse or drive?


While driving in first gear it jerks or when you engage first gear it jerks ? Please clarify ! If the first ,sounds like a misfire ! spark plug ,plug wire , !

Jun 19, 2015 | 2003 Pontiac Grand Am

1 Answer

How do I fix error code P0744, )730,0736, 0602


0602 refers to the Engine Control Module ,either faulty , needs reprogramming,or wrong ECM which unless you've had it changed recently it will be one of the first two .The other codes all refer to the transmission and Powertrain Control Module , the only thing that can be done within a reasonable budget is to have the transmission fluid changed . The other causes are going to cost depending on what may be the fault if changing the fluid did'nt help, sorry not good news as there are no easy fix's to these type's of problems. Best advice get a diagnosis from a transmission specialist although as you've mentioned $1500 you probably have already.These OBD codes are only an indicator of which sensor/switch may be at fault so upto you if you try the fluid change as could only be around $100-$150 at most,otherwise may be better to change car in good luck

May 21, 2014 | 2005 Chevrolet Equinox LT

3 Answers

97 mercury sable began having transmission jerking problem, husband changed filter, ran fine on test drive, notice fluid leaking had to replace oil switch, while oil switch was off i didnt know it, I drove...


Fluid change won't fix an internal problem,only
gives you new & clean fluid & sometimes causes it
to slip, if it was already & you didn't know it

I think it is time for a rebuild if it has over 85,000
miles on it

Not a bad trans,just a short life expectancy

I know 85,000 sounds not long, but the taurus/sable has always
never gone long for the last 20 years or more

Sep 26, 2012 | 1997 Mercury Sable

2 Answers

My 1999 Mitshubishi Mirage neutral light comes on while i'm driving and the car jerks when i put it in gear


The 1st thing you must have done here is to have the electronic control module (called the "TCM") for the transmission checked for fault codes, the transmission is computer controlled through electric solenoids and other sensors whose input is used to provide proper shifting based on load, engine temperature, vehicle speed and transmission fluid temperature. Once the codes are checked you proceed with diagnosis based on that information. This test takes a special high end electronic scan tool.

Mar 23, 2012 | 1999 Mitsubishi Mirage

1 Answer

Jaguar xk8 transmission problem that jerks when changing gears


if the transmission jerks this is s ign that the either the fluid is dirty which is causing the valves to stick in between changes...the module is trying to control the shifts as you drive and keep the shift adaptations...please get the transmission fluid flushed immediately! but preferably get the ****** serviced..it should be done every 25-30k miles...the flush should run 300.00 give ot take..

Dec 11, 2011 | 2003 Jaguar X-Type

2 Answers

Transmission slipping on my lincoln,1994 town car


Assuming the transmission fluid level is good and the fluid is not brown and giving off a burning smell, you may have a transmission that's getting old and will slip from time to time. There may be a band adjustment you can have done but if the transmission is original, 17years is pretty old for a transmission.

Oct 26, 2011 | Cars & Trucks

1 Answer

Car won't accelerate and when it does it jerks hard. can't get over 50 mph


MAKE SURE YOUR ENGINE FINE TUNE. CHECK TRANSMISSION FLUID LEVEL.IF FLUID LEVEL OKAY.DO A FILTER AND TRANSMISSION FLUID CHANGE IF ONE HAS NOT BEEN DONE A LONG LONG TIME.SOUND LIKE TRANSMISSION SLIPPING. IF FLUID + FLUID LEVEL OKAY AND FILTER HAS ALREADY BEEN DONE.YOUR TV SHIFT CABLE LOOSE NEED ADJUSTING. IF YOU SEE A CHECK ENGINE LIGHT FLASHING LOOK FOR TRANSMISSION FAULT CODES LIKE TORQUE CONVERTER CLUTCH SOLENOID OPEN OR FAULTY TORQUE CONVERTER.YOU COULD HAVE FAULTY SHIFT VALVES.BEST GET CAR CODE SCAN.YOU HAVE MANY SHIFT VALVES.

Mar 02, 2011 | 1999 Oldsmobile Alero

1 Answer

I think my automatic transmission modulator valve is going out because it jerks and vibrates when i accelerate anything above 50 MPH.


90 % of the time jerking or vibration is usually caused by the engine and not the transmission. The most common cause is cylinder misfiries caused by the ignition system that cause the vehicle to ****, stumble, or shudder which make it appear and feel as though the transmission is the cause. Most transmission problems will cause harsh shifts, slippage, and/or delayed engagement but rarely jerks or vibrations. I'd start by looking at the spark plugs, plug wires, and coil packs to make sure they are all ok first before going any further. The reason most of these problems are more noticable over 50 mph is that the torque converter clutch is engaged at this point and it provides a solid connection between the engine and drivetrain which makes engine misfires more noticable. Good luck, hope this helps a bit!

Jul 07, 2010 | 1997 Chevrolet Lumina

2 Answers

Transmission is jerking violently then will not


That sounds like solenoid problems if this is an electrically controlled transmission. Fluid and filter change will likely NOT fix this. Flushing and filter change is preventive, not repair. Is the check engine light on? If so, rent a scanner and read the code(s). It should point out problems with transmission control. You likely need the services of a good transmission repair facility (many penny!).

Aug 24, 2009 | 2002 Kia Sedona

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