Question about 1999 Jeep Grand Cherokee

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What does it means to flash a transmission.my transmission is shifting from first to second to fastcould that be what i need

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Flashing the trans is reprogramming the Transmission control module. The TCM controls when the transmission shift according to road speed, throttle input and engine load.

Posted on Apr 23, 2010

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Most newer transmissions like yours have a computer that controls when and how firm to shift into the next gear or to downshift into a lower gear. To flash the transmission is to recalibrate the computers factory shift points. This service could fix the problem of shifting to soon. It is something best left to the Jeep service department. Hope this helps.

Posted on Apr 23, 2010

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1 Answer

If it shifts smooth in first to second but red lines and I have to drive it in second gear does that still mean my clutch is out?


There are a number of causes for the failure of the automatic transmission as you have described it.

You will need to take the car to the dealership or to a transmission specialist for a proper fault check and diagnosis. From the symptoms you have described here I believe you will be looking at having to replace the auto transmission with a rebuilt unit because there will most likely be significant internal damage to transmission components . Most of these problems are due to poor/inadequate maintenance which in many cases is zero maintenance of the transmission by owners.

Nov 25, 2015 | Cars & Trucks

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1995 ford f-150 gear shift has overdrive light flashing off.What causes this & how do I get it to quit flashing.


http://www.fordf150.net/forums/viewtopic.php?t=48477 is a place you can see what the problem can mean? Basically you have a malfunction that the transmission is warning you about!
Try resetting the trouble codes by disconnecting the + & - battery terminals and touching them together for about 15 seconds to remove any residual energy from the computer system! Connect your battery and test drive the vehicle if it goes out and stays off then your problem may have been due to a stopped up filter or an error in shifting the transmission into neutral from drive or reverse with the engine accelerated causing the torque converter to suddenly lose pressure possibly causing damage? Go to autozone and as long as the light is flashing or check engine light is on they can retrieve the codes for free! Then if you have mechanical problems you would be saving money if you pull the transmission yourself and have it fixed or go to a transmission shop who can save you time and do everything but get ready to shell out $700- $1,000 to rebuild it!

Jan 16, 2015 | Ford Cars & Trucks

1 Answer

Why is tracker slow shifting from second to third gear


2doors or 4 doors?
3 speed or 4 speed transmission, I'm assuming its not a manual stick.
as those too can shift slowly on other oddities.
the 3/4 speed can delay shifts if the TV cable sticks or is adjusted wrong, as can the 3sp vacuum modulator vacuum hose fell off.
the 4 speed can delay for , the TCM sees transmission slip.
the 4 speed is electronically shifted , unlike the 3sp.
the 4speed flashes the OD lamp if there are troubles. (means scan it)
ask how.

http://www.fixkick.com/slush-pump.html


Oct 03, 2014 | 1992 Geo Tracker

1 Answer

When do I use the d 5 gear in acura 2003 tl 3.2 liter


Pretty much all the time!

D3, D4, and D5 are all just *DRIVE* like on any automatic transmission, EXCEPT
that the number next to the D is the "highest gear the automatic transmission will go into".
The Acura just gives you a choice, in case you don't want to go into a higher gear (like if it's slippery traction or a steep hill, etc.)

1 means: Manual gear. FIRST GEAR ONLY.
2 means: Manual gear. SECOND GEAR ONLY.
D3 means: Use automatic transmission, but engine will never shift above 3rd gear.
D4 means: Use automatic transmission, but engine will never shift above 4th gear.
D5 means: Use automatic transmission, but engine will never shift above 5th gear.

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1 Answer

My '93 suzuki sidekick automatic transmission 4 wheel drive after warm up "overdrive off" starts flashing on and off and when on the drivetrain stops working


The O/D light's flashing means there is some kind of transmission trouble.

The codes are..


Trouble Code (1) Probable Cause
12 ............................... System Operation Normal
21 ..................... No. 1 Shift Solenoid Open Circuit
22 .................... No. 1 Shift Solenoid Short Circuit
23 ..................... No. 2 Shift Solenoid Open Circuit
24 .................... No. 2 Shift Solenoid Short Circuit
25 ............................. TCC Solenoid Open Circuit
26 ............................ TCC Solenoid Short Circuit
31 ............ Vehicle Speed Sensor Open Or Short Circuit
32 ................ Throttle Position Sensor Short Circuit
33 ................. Throttle Position Sensor Open Circuit
34 ................ Defective Park/Neutral Position Switch
36 .............. (2) No Signal-Both Vehicle Speed Sensors
(1) - Check listed component for probable cause. Also check wiring and connections of specified component.
(2) - No signal from both transmission and speedometer mounted vehicle speed sensors.

If a trouble code is present, OD OFF light will flash a trouble code. The number of flashes will equal first digit of trouble code. After a one second pause, second digit will be displayed. If more than one trouble code is present, next trouble code will be displayed after a 3 second pause. Smallest number trouble code will be displayed first. Trouble codes will be repeated.

Hope this gave you some insight on the issue.

Mar 08, 2011 | 1993 Suzuki Sidekick

1 Answer

My speedometer stoped working, and my tranny shifts hard into second. and once it shifts into second the overdrive button comes on, and flashes.


WELL DIDNT TELL ME THE YEAR OF TRUCK CHECK TRANSMISION FUSE FIRST.IF ALL IS GOOD LOW TRANSMISSION FLUID OR STOPPED UP TRANSMISSION FILTER AND OLD FLUID CAUSE SHIFTING PROBLEMS.FAULTY VSS SENSOR WILL CAUSES TRANSMISSION SHIFT PROBLEMS.IF YOU HAVE NEWER MODEL TRUCK FAULTY TCM OR TRANSMISSION CONTROL MODULE FAULTY.

Aug 04, 2010 | Mazda B3000 Cars & Trucks

1 Answer

Overdrive light is flashing on my 1996 Mercury Grand Marquis


That usually means the transmission is in "LIMP" mode... Just to get you home or to a Service Center of your choice (one that does transmissions).... When it O/D blinks the car will drive sluggish... it stays in second gear and does not shift.... just so you can LIMP somewhere...... a good price to rebuild this transmission is about 1500 dollars.... Good Luck

Jul 13, 2010 | 1996 Mercury Grand Marquis

2 Answers

2000 accord ex w/ 4 cylinder engine. The light around the D4 (indicating gear) flashes and the car accelerates very slowly in cold weather until the engine gets warm. What is wrong? How to fix?''


The D4 indicator light flashing indicates that your car's computer believes that there is something wrong with your transmission.

This is what the manual for your 2000 Accord says:

The "D4" indicator comes on for a few seconds when you turn the ignition switch ON (II). If it flashes while driving (in any shift position), it indicates a possible problem in the transmission. Avoid rapid acceleration and have the transmission checked by an authorized Honda dealer as soon as possible.

Sometimes this will mean that you are simply low on transmission fluid, but you really should have it checked.

Hope this helps you.

Jan 04, 2010 | 2000 Honda Accord

2 Answers

The drive light flashes


Standard manual advice is:
The ‘‘D’’ indicator comes on for a few seconds when you turn the ignition switch to ON (II). If it flashes while driving (in any shift position), it indicates a possible problem in the transmission.
If the malfunction indicator lamp comes on along with the ‘‘D’’ indicator, there is a problem in the automatic transmission control system. Avoid rapid acceleration, and have the transmission checked by your dealer as soon as possible.
Hope this at least helps you know there might be a problem.

Nov 10, 2009 | 2005 Honda Pilot

2 Answers

Engine taking a few seconds to pick up when about


This is the standard advice, probably worth following:
The "D4" indicator comes on for a few seconds when you turn the ignition ON (II). If it flashes while driving (in any shift position), it indicates a possible problem in the transmission. Avoid rapid acceleration and have the transmission checked by an authorized Honda dealer as soon as possible.
Hope this is helpful

Oct 31, 2009 | 1996 Honda Odyssey

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