Question about Volvo S80

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Car periodically starts in limp mode...have tried reprogramming...car will start again in normal mode after about 8 minutes of wait. Are there ant additives that will help the module?

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Haha, sorry no additives. Take it to your local autoparts, (Autozone, Advance, etc) have them do a free fault scan. They come out to your car, plug in their scanner, read the faults, print them out for you and reset the lights - FREE

Posted on Jan 02, 2011

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Posted on Jan 02, 2017

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I was told my 08 dodge avenger was in"limp mode" ( doesn't excellerate as normal an won't do over 45) what do I need to do to repair this issue . thanks in advance.


Limp Mode is the result of an exceptional condition occurring. It provides the driver a very restricted driving mode to travel a limited distance,

One hopeful cause is that this has occurred when the car was first started. If it is then it is likely that the battery was weak and tripped the cars computer into the limp home mode. Some times the limp mode doesn't activate but a CK engine light comes on.

Make sure that the car is in a safe location. Make sure that the battery is charged. Remove the battery terminal for about a minute or two. Reinstall the battery connection. If the car starts normal and runs OK you can assume the battery voltage had dropped below an except-able level and tripped the limp mode. Replace the battery.

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07 impala starts but dies and not start again


Normally Shifting out of gear in motion wont damage much unless you revved the engine really high for an extended period. Shifting into park while in motion will make a ratcheting sound, but usually wont hurt anything. However the act of doing so may have tripped a fault in the ECU that makes the car think it needs to be in limp mode. It did just that and got you home albeit running roughly.

Have someone remove the NEGATIVE battery cable. leave it disconnected for a few minutes, then reconnect and jump start the car if the battery is too low. doing so should reset the ECU and restore normal operation. If drivable, proceed to a brand name parts store. they usually will reset your ECU codes for free. IF all is well this should fix the probelm. If something was indeed damaged, you wont likely be able to drive the car.

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Is the check engine light on while you're cranking the engine?

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2002 mercury grand marquis wont start when engine at normal temperature must wait 15-20 minutes


I have exactly the same problem started last winter, ran fine all summer then as soon as it got below freezing again if I start it and run for 15 20 minutes wont restart I have to let it sit for 20 minutes or so and then it will start again. no codes and just turns over without starting. cant be fuel pump like i said had this problem last winter then ran fine all spring summer and fall! Anybody got the answer for this one??

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System show theft system on wait three minutes. It shows the count down and when the three minutes are up shows star car, but when I turn the key it starts all over again. The does it's normal thing but...


your key may be worn there a small sensor on your key that the ignition senses. the ignition tumbler may be worn out to. try using your extra key. you may have to have ignition key and tumbler replaced and reprogrammed to your vehicle. hope this helps

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1 Answer

Starts out in 3rd gear


Trans shifts into gear harshly, car feels sluggish off the line, No 1st, 4th or TCC lockup available, Manual 2nd, 3rd and Reverse are only available gears, CEL is on: Transmision is either in limp-home mode or has lost electrical power. If there are lots of error codes in the PCM, check the underhood fuse that powers the transmission, and if it pops again, look for a short in that circuit like an O2 sensor harness touching exhaust. Otherwise, check PCM codes for a particular fault in the transmission causing the PCM to put it in limp-home mode.
What is "limp-home mode" ? This is a fault mode in which the transmission either loses electrical power or the PCM deactivates all of the electronics. The transmission will default to max line pressure. The driver will have Reverse and 3rd, with manual 2nd available by putting the gearshift in 2 or 1 (doesn't matter). 1st, 4th, and TCC lockup will not be available. It will not hurt the car to drive it like this for short periods, but use manual 2nd to get the car moving, and be aware that the trans will generate more heat than normal while operating in limp-home mode due to increased torque converter slippage during 2nd gear starts and no lockup in 3rd gear.
Before guessing at transmission problems, check the fluid level (car warmed up, engine running in Park on level ground) and have the PCM scanned for trouble codes FIRST. This guide is meant for problems that do not show up as PCM codes (like shift A&B solenoid failures, for example).
Thank you for using fixya and good luck

Apr 19, 2010 | 1994 Oldsmobile 88

1 Answer

Will not shift into 2nd gear on a automatic trans


Trans shifts into gear harshly, car feels sluggish off the line, No 1st, 4th or TCC lockup available, Manual 2nd, 3rd and Reverse are only available gears, CEL is on: Transmision is either in limp-home mode or has lost electrical power. If there are lots of error codes in the PCM, check the underhood fuse that powers the transmission, and if it pops again, look for a short in that circuit like an O2 sensor harness touching exhaust. Otherwise, check PCM codes for a particular fault in the transmission causing the PCM to put it in limp-home mode.

What is "limp-home mode" ? This is a fault mode in which the transmission either loses electrical power or the PCM deactivates all of the electronics. The transmission will default to max line pressure. The driver will have Reverse and 3rd, with manual 2nd available by putting the gearshift in 2 or 1 (doesn't matter). 1st, 4th, and TCC lockup will not be available. It will not hurt the car to drive it like this for short periods, but use manual 2nd to get the car moving, and be aware that the trans will generate more heat than normal while operating in limp-home mode due to increased torque converter slippage during 2nd gear starts and no lockup in 3rd gear.

Thank you for using fixya and good luck

Apr 10, 2010 | 1994 Chevrolet S-10 Blazer

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My volvo 850 transmition cut out on me. For a while the arrow on the dash was blinking and it would switch to limp mode. I brought it in to be looked at and they didn't find a problem. Last time it...


Any time the transmission goes into the limp mode, it generates an error code that tells what caused it to go into limp mode. It could be something as simple as a loose connection on a sensor for the transmission computer. The code would explain which sensor was sending the correct signal.
By restarting the car you are resetting the transmission computer, clearing the limp condition.

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1 Answer

Transmission locked up, felt like it was stuck in second or third gear. not shifting. shut engine off and restarted , shifting properly now. what causes this.


It was a temporary fault that put the car into limp mode (a safeguard operating condition designed to protect the transmission in case of serious failure). Sometimes a transient fault can occur, and the car goes into limp mode just to be sure it's not for real. Shutting off and restarting the car is the usual way to clear the fault and return the car to normal operation - if the problem was real, the car would've stayed in limp mode after restart, or gone into limp once you started driving again. I wouldn't sweat this one, since it went right back to normal operation.

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