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Gearbox faulty while driving and limp mode help me fix this cant afford a garage trip right now!! But need this fixed

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  • Cars & Trucks Master
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The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM or ECM,ECU), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems can and do cause many drive-ability related problem such as rough idle and other symptoms.

Posted on Dec 18, 2012

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Posted on Jan 02, 2017

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SOURCE: 2001 X type 2.5Se Gearbox fault

it also could be the driveshaft

Posted on Sep 11, 2008

  • 1779 Answers

SOURCE: limp mode on chrysler grand voyager 3.3 le auto.

If it's in limp mode, the check engine light is on steady, or blinking, or a combination of the two. You need to have trouble codes read, most parts stores offer this as a free service. They will plug a hand held scan tool into the vans diagnostic port under the dash, and 'read' codes stored in the computer. They can explain what they mean, and make recommendations on what to do to fix it. If you have any questions after that, post them here with the code #'s.

Posted on Apr 18, 2009

  • 191 Answers

SOURCE: no reverse only drives for 30 seconds limp mode???? please help!

P1388 = Auto Shutdown (ASD) relay control circuit open or shorted.
The ASD relay routes battery power to the ignition coils, and is energized by the PCM as long as it receives signals from both the crankshaft and camshaft position sensors. If the engine stops turning (stalls), the PCM deengerizes the ASD relay and shuts down the ignition system. The ASD relay also supplies battery voltage to the fuel injectors, so when it shuts down it cuts off both ignition and fuel. At the same time, the PCM also deenergizes the fuel pump relay to turn off the fuel pump. For "limp in" capability, the Chrysler system can run with input from the crankshaft position sensor only. The ASD and fuel pump relays are both located in the Power Distribution Center.

Posted on May 10, 2009

  • 1 Answer

SOURCE: software mismatch after changing auto gearbox on 55 reg S80 D5

There are three ecu settings? gearbox / main ecu / and center control, they all will need to be updated then a process called learning cycle which has to be reset by the technicians, then the car needs to be driven to adapt the new transmission.

Posted on Jun 07, 2009

  • 580 Answers

SOURCE: BMW (e39 1999) eml and asc lights and in limp mode

Check the ABS brake sensors in your wheels, if they are not functioning properly. It will trigger the computer to engage the ASC auto stability control light as the asc uses the brakes to assist in control. I will also engage the EML engine management light to slow the rev point to limp mode

Posted on Aug 23, 2009

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1 Answer

What do u mean limp mode on a Ford falcon and How To reset It


Limp mode is a setting which is made by the Engine Control Module that limits the vehicle performance to protect itself. You need to take it to a garage, they will put a code reader on it and tell you what sensor is reporting a fault and what the fix is. Resetting the computer without fixing the underlying problem can be catastrophic to the engine.

Now, having written all of the above, this is an old vehicle, so codes and ECMs do NOT apply.

Have a read of this

https://www.google.ca/search?q=Ford+falcon&ie=utf-8&oe=utf-8&gws_rd=cr&ei=vbXlWPuQM8HEjwO2lp6YBw#q=ford+falcon+au+limp+mode&*

limp mode Google Search

Ford falcon limp home mode - Google Search

Apr 06, 2017 | Ford Cars & Trucks

1 Answer

My golf is going into limp mode as soon as it gets hot


faulty transmission computer or solenoids
or other sensors
battery draining may be separate issue
cant be ignored
book into a workshop to find and fix fault

26318759-eqnsd0j5dazk1edooe0d0ozr-3-0.jpg

Oct 19, 2016 | 2006 Volkswagen Golf

1 Answer

Mechanics advised that gearbox needs replace after diagnostic Of codes . Dash light still on after codes being read , have had ecu replaced 2yrs ago ? What do you think it could be , thanks phil


didnt specify vehicle --generic answer--until repair is made the vehicle will show engine light and have codes --if gearbox is problem for limp mode /until repairs are made or gearbox replaced you will be in limp mode --and as to sensor find out what one it was --start problem may show back up if sensor was problem --and GET a 3rd opinion you have 2 mechanics with different opinions on your problem and i guess they are reading your trouble codes differently

Sep 20, 2016 | Cars & Trucks

1 Answer

Hi, have a citroen Ds3 dsport...anti pollution fault, asr/esp, limp mode...need to get out of limp mode to accelerate to clear system... Need help as it's driving me nuts!!!!


the limp mode will not allow you to accelerate until you have fixed the problem and reset the ECM
Limp modes are not there to help ease you frustrations but to prevent costly repairs to the engine and transmission
fix it , reset it then you will have no need to go nuts

Aug 13, 2016 | Citroen Cars & Trucks

1 Answer

How to fix a transmission in safe mode?


Take it to a garage.. as the fault codes etc that resulted in the gearbox going into limp mode need to be reset. I might have entered limp mode spuriously but more likely there is a legitimate fault

Aug 18, 2014 | 2002 Audi A6

1 Answer

ML goes into limp mode intermittently,is it a gearbox or turbo problem or faulty computer code.Where lies the cheapest answer please?


There are no cheap answers

You need to have the problems
proper diagnosed at a shop of
your choice

Most vehicles only have 2 or maybe 3
limp or fail safe modes

Mar 27, 2013 | Cars & Trucks

1 Answer

Car stays in 2nd gear all of the time. (Limp mode) Fix Engine light stays on, D green light blinks constantly for automatic transmission Honda Accord 2005


Ah, I see. You want to outsmart the computer? Right logic, wrong computer. I think the problem is not in the transmission, but it is the engine computer that has communicated with the transmission computer and put the car in limp-in mode. The fix engine light is sent from the engine computer, and this is the main computer in the car, the main drive train computer, if you will.
The short answer is yes it will reset, by just unhooking the battery. Won't do any harm. Start it up about an hour later, and be sure and let it warm up to normal operating temperature (closed loop) before you take it out for a test drive. Otherwise you may be miles from home in 2nd gear limp-in mode again.
The real fix is to talk to your car...like communicate with the computer and get those trouble codes read...talk to it nice, not the abrupt tone of the glaring idiot light, and maybe it will respond in a kinder, gentler easy to fix diagnostic code!!!!
Good luck.

Mar 19, 2012 | Honda Accord Cars & Trucks

1 Answer

I have a 2000 S Type with 100,000 miles that I bought about 4 months ago. Within 2 weeks of purchase, the Failsafe engine light kicked in and went straigh into "limp home mode" I did some...


the best thing to do is to have the car scaned with the diagnostic computer to see what fault codes are stored.
acording to the fault code you'll be able to work out what's wrong with it.
I'm sorry i ca't be anymore helpfull.

Jul 25, 2011 | 2000 Jaguar S-Type

1 Answer

Automatic transmission gearbox


unfortunately this could be one of a number of things, it will require diagnosing by either your renault garage or an autogearbox specialist. sorry. i have replaced many a hydraulic valve unit or the EVM valve for the DP0 automatic gearbox for internal pressure faults

Aug 29, 2009 | 2005 Renault R5

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