Question about 1995 GMC Safari

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Vehicle idles horribly.

When he vehicle is in park or when it's stopped at a light with the brake depressed it idles terribly. It's like it cycles vetween revving reallyhigh and then it will return to normal. It does this constanly.

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  • wild safari Jul 21, 2008

    Thanks for the info. I will let the mechanic at the GM garage know. I' ve had the vehicle in there previously and that was not mentioned. It seems that if they can't pull a code from the vehicle's computer then it's just guess work on their part.



    If the throttle were sticking, would it still being rev high and low when the vehicle was in park?

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Throttle cable sticking??

Posted on Jul 17, 2008

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What if the 2000 dodge caravan break light comes on


If the BRAKE light comes on, and the parking brake is not engaged, it indicates a potentially very dangerous condition, where hydraulic pressure is lost in the system. IT IS NOT SAFE TO DRIVE YOUR VEHICLE IF THE BRAKE LIGHT ILLUMINATES, EVEN "ONCE IN AWHILE," WHEN DEPRESSING THE BRAKE PEDAL.

IT IS ALSO NOT SAFE TO DRIVE THE VEHICLE IF THE BRAKE LIGHT ILLUMINATES WITH THE PARKING BRAKE DISENGAGED.

The cause for the issue may be:
  1. Bad master cylinder (most likely);
  2. Contaminated brake fluid (if the wrong kind of fluid was used);
  3. Bad wheel cylinder(s);
  4. Damaged brake line;
  5. Excessive wear on brake parts (such as pads and rotors);
  6. Defective brake pressure sensor.

Aug 12, 2014 | 2000 Dodge Caravan

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1998 audi a4 transmission engaged when depressing brake


You have two problems. First you probably have a bad brake master cylinder, or a severe brake fluid leakage somewhere. Second forcing it into park damaged your transmission.

Sep 11, 2012 | 1998 Audi A4

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96 F250 can't shift out of park


NOTE: Your vehicle is equipped with a

brake-shift interlock feature. This

feature prevents you from shifting

from P (Park) unless you have the

brake pedal depressed. (The ignition

must be in the ON position.) If you

cannot shift from P (Park) with the

brake pedal depressed:


1. Apply the parking brake.

2. Remove the key.

3. Insert the key and rotate one position
clockwise (ignition in the OFF position).

4. Apply the brake pedal and shift to N

(Neutral). (If the vehicle is shifted to P

(Park), you must repeat the previous steps.)

5. Start the vehicle.


If you need to shift out of P (Park) by using the

alternate procedure described above, it is

possible that a fuse has blown and that your

brakelamps may also not be functional.


WARNING

DO NOT DRIVE YOUR VEHICLE UNTIL

YOU VERIFY THAT THE BRAKELAMPS
ARE WORKING.

check fuse 13 based on the attached diagram.

If this fuse is bad replace it. If it is not bad, blows again, or continues to be stuck in park then you need a new brake interlock switch that can be found on the brake pedal up underneath the dash.mustang_guru_2.jpg

Jan 12, 2011 | Ford F-250 Cars & Trucks

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When in park hard to move shift stick out of park


Moving the shifter out of park is sometime diffucult if the vehicle is parked on an incline or decline?

Aug 15, 2010 | 1993 Honda Accord

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2008 Impala Can't get it out of Park. Shift button won't depress.


HAVE SOMEONE DEPRESS THE BRAKE PEDAL WHILE YOU CONFIRM YOU HAVE BRAKE LIGHTS THIS VEHICLE WILL NOT COME OUT OF PARK IF THIS CIRCUIT IS NOT COMPLETED

Mar 15, 2010 | 2008 Chevrolet Impala

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Can't get out of park. Brake lights OK. 2002 ford excort se, automatic


In Alot of the newer Fords the brake pedal must be depressed to put the vehicle into gear, this is contolled by a sensor near the top portion of the brake lever, just because your brake lights are working, does not mean this switch, is properly functioning, also it is very possible there is a second switch located in the same area that controls this function. Also if this vehicle is a console shift, it is possible that the safety switch that is connected to shifter is disconnected or broken, this will stop your car from shifting into gear as well. Hope this helps!

Feb 14, 2010 | 2002 Ford Escort

1 Answer

2006 explorer. whencar put in reverse it won't move, when it does, it will jump and make a loud clanking sound


three things to check

bad Universal Joint,
with the vehicle in park and the parking brake firmly set get under the vehicle and check for excessive play at either end of the driveshaft.

bad transmission mount
get a helper, have them start the vehicle and with the parking brake firmly set and the brake pedal depressed put it in reverse (DO NOT BE UNDER VEHICLE AND STAY CLEAR OF TIRES) , watch the driveshaft and transmission for movement.

bad motor mount
open the hood, have the helper once again start the engine and put the vehicle in reverse with the parking brake set and the brake pedal depressed, watch for excessive engine movement.

Jan 23, 2010 | 2006 Ford Explorer

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Dash light for "depress brake pedal"


no it just says that in order to move the vehicle from this gear, you must put your foot on the brake.

Dec 18, 2009 | 2001 Volkswagen Jetta TDI

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The vehicle will start but even after depressing


You need to replace brake light switch

Oct 01, 2009 | 2002 Ford Explorer

2 Answers

How do i reprogram the computer on my 2002 xl7


Try this relearn procedure hopefully it will help

Vehicles equipped with engine or transmission computers may require a relearn procedure after the vehicle battery is disconnected. Many vehicle computers memorize and store vehicle operation patterns for optimum driveability and performance. When the vehicle battery is disconnected, this memory is lost. The computer will use default data until new data from each key start is stored. As the computer memorizes vehicle operation for each new key start, driveability is restored. Vehicle computers may memorize vehicles operation patterns for 40 or more key starts. Customers often complain of driveability problems during the relearn stage because the vehicle acts differently then before being serviced. Depending on the type of vehicle and how it is equipped, the following complaints (driveability problems) may exist:

Harsh Or Poor Shift Quality
Rough Or Unstable Idle
Hesitation Or Stumble
Rich Or Lean Running
Poor Fuel Mileage

These symptoms and complaints should disappear after a number of drive cycles have been memorized. To reduce the possibility of complaints, after any service which requires battery power to be disconnected, vehicle should be road tested.

Vehicle Preparation

Ensure all components are connected. Ensure transmission fluid level is correct. Warm engine to normal operating temperature. If vehicle has been repaired, perform KOEO and Continuous Memory Code Self-Test and ensure fault codes are not present.

Computer Relearn Procedures

Idle Relearn Procedure

Place automatic transmission in Park or manual transmission in Neutral position. Ensure the emergency brake has been set and all accessories are turned off. Start engine and bring to normal operating temperature. Allow manual transmission vehicle to idle in Neutral for one minute. Allow automatic transmission to idle in Neutral for one minute and then to idle in Drive for one minute. Once initial relearn is complete, process will be completed during normal driving. Always complete the procedure before returning the vehicle to the customer.

Drive Cycle Test (AOD-E, AXOD & AXOD-E TRANSAXLES)

With transmission gear selector in Overdrive, moderately accelerate vehicle to 50 MPH for a minimum of 15 seconds. Transmission should be in 4th gear. While holding speed steady, lightly apply and release brake for about 5 seconds. Stop and park vehicle for a minimum of 20 seconds with transmission gear selector in Drive. Repeat procedure 5 times. Always complete the procedure before returning the vehicle to the customer.

Drive Cycle Test (E4OD)

With transmission gear selector in Drive, press Overdrive Cancel Switch (LED should light). Moderately accelerate vehicle to 40 MPH for a minimum of 15 seconds (30 seconds above 4000-ft. elevation) Transmission should be in 3rd gear. While holding speed steady, press Overdrive Cancel Switch (LED should go off) and accelerate from 40 MPH to 50 MPH. Transmission should shift from 3rd gear to 4th gear. Hold speed steady for 15 seconds. While holding speed steady, lightly apply and release brakes enough to turn brake lights on. Maintain 50 MPH for about 5 seconds. Stop vehicle for a minimum of 20 seconds with transmission gear selector in Drive. Repeat procedure 5 times. Always complete the procedure before returning the vehicle to the customer.

Mar 26, 2009 | 1998 Lincoln Mark VIII

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