Question about 2006 Jeep Grand Cherokee

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Cruise control working but accelerates

Cruise control is working but it accelerates in an insane speed

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  • Jeep Master
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Double posted, sorry, no double answers.
back up one post and read.

Posted on Mar 28, 2014

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Posted on Jan 02, 2017

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SOURCE: Cruise control accelerates after setting it

Most likely due to a problem with the PCM (Powertrain Control Module). You can try disconnecting (for about a minute) and reconnecting your battery which may reset this system and fix the problem. If not, you can bring your vehicle into the dealer, they will perform a diagnostics test for about $95 that will determine what the problem is. If it ends up being the PCM, it is covered under warranty for 8 years 80,000 miles.

Hope this helps.

Posted on May 18, 2010

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Related Questions:

1 Answer

What causes the speed to fluctuate when you set the cruise control?


if it just started to happen you may have lost a magnet off the drive shaft. If it is a front wheel drive then you would have two magnets on the flywheel if you lost one magnet it would cause problems.
The other possible cause if the sensitivity setting is set too sensitive then the cruise control will surge .
Setting it lower will allow it to slowly respond to speed changes but if going up hill it will take a while to increase the acceleration . Or going down hill it could accelerate too much before the cruise control realises it is going downhill
Also a very wet road can cause the wheels to spin and cause the cruise control to lose the plot and accelerate to dangerous speeds.
I have had this happen to myself once so be wary of cruise control use in wet conditions.

Jan 14, 2017 | 1992 Honda Accord

1 Answer

When cruse is set, why does it not hold going down hill


Cruise control only maintains speed by utilizing the accelerator. To speed up it increases it and during slowing is removes it. The cruise control will not apply brakes in the event of a steep downhill run. In this case the vehicle will start to accelerate in the same manner as if the cruise control was not engaged. But in theses cases, most cruise controls, once the speed exceeds a certain amount above the set speed, will auto-disengage as a safety feature.

Oct 04, 2016 | 2004 Chevrolet Silverado 2500HD

1 Answer

Where is the fuse for cruise control on a 2003 envoy


It is HVAC 1fuse #39 in the rear fuse block ,this powers the on/off switch for cruise control ! Fuse Block - Rear Beneath the left rear seat. What engine does it have ? 4.2 L or 5.3 l There is no vacuum involved in the operation of the cruise control ! Your vehicle has electronic throttle control .
Cruise control is a speed control system that maintains a desired vehicle speed under normal driving conditions at vehicle speeds above 40 km/h (25 mph). Steep grades may cause variations in the selected vehicle speeds.
The following are the main components of the Cruise Control System:
?€¢
The powertrain control module (PCM)


?€¢
The On/Off switch


?€¢
The Resume/Accel switch


?€¢
The Set/Coast switch


?€¢
The TCC brake switch


?€¢
The stop lamp switch


?€¢
The throttle actuator control (TAC) motor


?€¢
The vehicle speed sensor


Cruise Control Engaged
The cruise control system will engage and adjust the vehicle speed based on the activation of the following cruise control switches:
?€¢
On/Off


?€¢
Resume/Accel.


?€¢
Set/Coast

The cruise control switches are located on the multifunction/turn signal lever.
The powertrain control module (PCM) monitors the signal circuits of the cruise control switches in order to determine when to capture and maintain the selected vehicle speed. The PCM uses the throttle actuator control (TAC) module motor in order to control the vehicle speed. For further information on the TAC System, refer to Throttle Actuator Control (TAC) System Description in Engine Controls - 4.2 L.
Ignition positive voltage is supplied from the 10 ampere HVAC 1 fuse to the cruise control switch via the ignition 3 voltage circuit. When the normally open cruise control On/Off switch is turned On, the switch closes and the PCM detects a high signal voltage on the cruise control on switch signal circuit. When the normally open Set/Coast switch is pressed, the switch closes and the PCM detects a high signal voltage on the cruise control set/coast switch signal circuit. To engage the cruise control system, turn the On/Off switch On and momentarily press the Set/Coast switch. The PCM will confirm that the cruise control enable criteria has been achieved. The PCM will engage the cruise control system and record the selected vehicle speed. The PCM sends a class 2 message to the instrument panel cluster in order to illuminate the cruise control indicator. Pressing the accelerator pedal, while the cruise control system is engaged, will allow the driver to override the cruise control system in order to accelerate the vehicle beyond the current set vehicle speed. When the accelerator pedal is released, the vehicle will decelerate and resume the current set vehicle speed. The driver can also override the current set vehicle speed via the Set/Coast switch and the Resume/Accel switch. When the cruise control system is engaged, pressing and holding the Set/Coast switch will allow the vehicle to decelerate from the current set vehicle speed without deactivating the cruise control system. When the Set/Coast switch is released, the PCM will record the vehicle speed and maintain the vehicle speed as the new set vehicle speed. When the cruise control system is engaged, momentarily pressing the Set/Coast switch will allow the vehicle to decelerate at 1.6 km/h (1 mph) increments for each time that the Set/Coast is momentarily pressed, with a minimum vehicle speed of 37 km/h (23 mph). When the normally open Resume/Accel switch is activated, the switch closes and the PCM detects a high signal voltage on the cruise control resume/accel switch signal circuit. Activating and holding the Resume/Accel switch, when the cruise control system is engaged, will allow the vehicle to accelerate to a greater vehicle speed than the current set vehicle speed. When the Resume/Accel switch is released, the PCM will record the vehicle speed and maintain the vehicle speed as the new set vehicle speed. When the cruise control system is engaged, momentarily activating the Resume/Accel switch will allow the vehicle to accelerate at 1.6 km/h (1 mph) increments for each time that the Resume/Accel switch is momentarily activated, with the maximum acceleration total of 16 km/h (10 mph) over the current set vehicle speed . Momentarily activating the Resume/Accel switch, after the cruise control system has been disengaged by pressing the brake pedal, will recall the previous set vehicle speed that is recorded in the PCM.

Sep 11, 2015 | Cars & Trucks

4 Answers

2005 Chevy trailblazer ext problems 1. Cruise will not set.worked last on 4/12/15 2. While checking fuses for CC problemdome lights stopped working, but worked fine before checking fuses. PLEASE HELP!


Bummer deal! This may be a way to tell you some tail lights are burnt out. Some cruise controls have a fuse in a second location.
The fuse is not in right or is blown. Check with a new fuse. Hope this helps. ...gc http://www.auto-tune-up-and-repair-options.com/

Apr 20, 2015 | 2005 Chevrolet Trailblazer Ext

1 Answer

How do i set the cruise control on my 1994 mercedes c220 elegance automatic


Cruise Control
Any given speed above approximately 22 mph (35 km/h) can be maintained with the cruise control by operating the lever.
-see photo

  1. Accelerate and set: Lift lever briefly to set speed. Hold lever up to accelerate.
  2. Decelerate and set:
    Depress lever briefly to set speed. Hold lever down to decelerate.
    Normally the vehicle is accelerated to the desired speed with the accelerator. Speed is set by briefly pushing
    the lever to position 1 or 2. The accelerator can be released. The speed can be increased (e.g. for passing)
    by using the accelerator. As soon as the accelerator is released, the previously set speed will be resumed automatically. If a set speed is to be increased or decreased slightly, e.g. to adapt to the traffic flow, hold lever in position 1 or 2 until the desired speed is reached, or briefly tip the control lever in the appropriate direction for increases or decreases in 0.6 mph (1 km/h) increments. When the lever is released, the newly set speed remains.
  3. Canceling
To cancel the cruise control, briefly push lever to position 3.
When you step on the brake or the vehicle speed drops below approx. 22 rnph (35 km/h), for example when driving upgrade, the cruise control will be canceled.
4. Resume
If the lever is briefly pushed to position 4 when driving at a speed exceeding approx. 22 mph (35 km/h), the vehicle resumes the speed which was set prior to the cancellation of the cruise control. The last memorized speed is canceled when the key in the steering lock is turned to position 1 or 0.
Note:
If the engine does not brake the vehicle sufficiently while driving on a downgrade, the speed you set on the cruise control may be exceeded and you may have to step on the brake pedal to slow down.
As soon as the grade eases, the cruise controlled speed will again be maintained as long as the brakes were not previously applied, or the lever may be used to resume the previously set speed if the brakes were applied.

set-cruise-control-1994-mercedes-c220-sufrpujyrsap3pvz3w2boz5j-3-0.jpg
http://www.benzworld.org/forums/attachments/w202-c36-c43/153145d1197313761-pdf-owners-manual-w202-1995-2000-1999-c280_owners_manual.pdf

Feb 14, 2015 | Mercedes-Benz C-Class Cars & Trucks

1 Answer

Ford focus cruise control


Once you have turned your cruise control on accelerate to desired speed press SET button on right hand side of steering wheel before lifting foot from accelerator, then remove foot from accelerator. pushing RESUME button will deactivate cruise control without turning it off. Then when clear of traffic push resume again to activate cruise control. It will automatically resume to previous set speed.

Apr 30, 2013 | 2006 Ford Focus

2 Answers

What are the functions of Resume &Coast buttons in steering wheel


If set at a specific speed and you have to slow down by hitting the brakes, The brakes turn off the cruise control. Pressing resume automatically turns the cruise control back on and accelerates to the previous speed setting. You can also use it to accelerate and by releasing it the new speed will be set.

Jun 18, 2009 | 1996 Mercury Grand Marquis

1 Answer

Cruise control how to test


hello,good day,any speed approx. 40 km/h can be stored.accelerate the car with accelerator or the switch to the desired speed and briefly press switch in position 1 or 2,,once the speed is stored,release the accelerator pedal,,,to increase or decrease speed in step of 1 km/h,briefly press switch in position 1 or 2,,stored speed can resumed from approx. 40 km/h,briefly press switch in position 4,(page 80),,ty

May 30, 2009 | 1994 Mercedes-Benz C-Class

1 Answer

How to set cruise control


cruise control on your escape will work at 30 mph and up. Press 'on 'button, then press gas pedal 'til u reach desired speed, press 'set acc' and you'll be cruisen. You can also do it this way, press 'on' button, then press and hold 'set/acc' button, car will accelerate, let go of button when u reach desired speed. Putting on brakes will deactivate cruise, u can then press 'RSM' to resume speed.

Oct 21, 2008 | 2002 Ford Escape

2 Answers

Cruse controll


Pull up on the brake pedal. If that does not work check your brake light bulbs (LED brake lights will also keep your cruise control form working). Finally check all of the fuses. This system needs at least 3 different fuses to work properly.

Aug 05, 2008 | 1998 Honda Accord

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