Question about 1999 Ford Explorer

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Seems like it does not idle at correct speed

I can be driving down the road and the vehicle just dies. Vehicle will not just idle, like if you start to defrost. You have to have foot on gas to keep it running. (Most of the time) I have replaced o2 sensors, serpentine belt, fuel filter, and spark plugs. Nothing seems to help.

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Idle air control motor located where the duct from your breather attaches to you intake, two bolts and a plug, probably has what looks like a black button on it. This is a very common problem on all fords.

Posted on Dec 28, 2008

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My car start orite drives fine but when I stop and take my foot of the petrol it is like it sufer the idle comes down and just before it dies it go up a gan need help pleas


Get a can of throttle valve spray cleaner from the parts store and clean the throttle valve and the idle speed control valve, disconnect the battery negative cable for 5 minutes and then drive it a few miles, the problem should be corrected. In the future always include the following: make, model, year and engine type of vehicle..

Sep 02, 2016 | Cars & Trucks

Tip

Some Driving precautions


Always observe the following precautions to minimize the risk of death, serious personal injury or damage to your vehicle:<br /><br />In a rollover crash, an unbelted person is significantly more likely to die than a person wearing a seat belt. Therefore, the driver and all passengers should fasten their seat belts whenever the vehicle is moving<br /><br />Avoid sharp turns or abrupt maneuvers, if at all possible. Failure to operate this vehicle correctly may result in loss of control or vehicle rollover causing death or serious injury.<br /><br />Avoid loading any items on the roof that will raise the vehicle's center of gravity.<br /><br />Always slow down in gusty crosswinds. Because of its profile and higher center of gravity, your vehicle is more sensitive to side winds than an ordinary passenger car. Slowing down will allow you to have better control.<br /><br />When driving off-road, or in rugged terrain, do not drive at excessive speeds, jump, make sharp turns, strike objects etc. This may cause loss of control or vehicle rollover causing death or serious injury. You are also risking expensive damage to your vehicle's suspension and chassis.<br /><br />Do not drive horizontally across steep slopes. Driving straight up or straight down is preferred. Your vehicle (or any similar off-road vehicle) can tip over sideways much more easily than forward or backward.<br /><br />Good luck.<br /><br /><br />

on Feb 14, 2011 | Toyota Pickup Cars & Trucks

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Symptoms 2000 kia sportage Symptoms 2000 kia sportage does not do all the time. Starts runs well but driving road 50mph almost as if ignition shut off split 2nd. Stop car and while running in drive s


Some makers used Vacuum releases for their emergency brakes which had a Vacuum switch connected to the shift assembly. This would account for a stumble if Vacuum vented out through this switch.

More common for shifting stumble to occur from Park to Drive, engaging a load on the engine, not to stumble to a freewheeling Park position. Sounds like idle speed control is sluggish to stabilize the motor.

You also have idle speed control problem with A/C, kind of shows that A/C was what kept the engine running because when you turned the A/C off, the car died.

I am going to give you some Websites for wiring diagrams. Alldatadiy.com amd Autozone.com with free wiring info upon registering your vehicle.

It seems that the base Idle speed control is not working and the A/C idle speed control is.

Also check for Vacuum leaks on the intake manifold by spraying water from a pumpbottle on the seams of the gaskets.

Check ignition Relay or ignition switch for random cutouts. The fusebox layout is on the Autozone site.

I hope my solution helps.

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My nissan frontier blows the automatic transmission fuse when attempting to start and it will not go into overdrive


Replace the transmission range switch for starters, if that doesn't correct the problem you have have a shorted shift solenoid on the valve body inside the transmission.

Feb 24, 2012 | 2002 Nissan Frontier Crew Cab

1 Answer

I will be driving my 87 cougar down the road then it will start jerking lose speed and die. what is causing that?


here are a few symtoms of a BAD IGNITION COIL. the car will spit and sputter.
If your vehicle is getting a lot less mileage for the gallon, you can also register this as a sign of ignition coil failure. When less power is reaching the spark plugs, your vehicle will struggle and use more fuel to compensate for the lack of power transfer.
Engine Misfiring Trying to start your vehicle when the ignition coils fail will result in a rough ride. Your vehicle will cough and splutter regularly and when you drive at higher speeds, your vehicle will **** and spit. It will also vibrate when you are running idle at a stop sign or intersection.
Vehicle Stalling With ignition coil failure, your vehicle will have irregular sparks emitting to the plugs to keep it running. This will result in stalling. When you bring your vehicle to a stop, it may just shut off totally, thus leaving you needing to restart it.
Coil Failure If your spark plugs are worn out, it forces the ignition coils to operate at a much higher output. Keeping your sparks plug in optimum condition can reduce your chances of having ignition coil problems. Some simple regular maintenance will save you a lot of grief. hope this helps you out !

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I turn on ignition and vehicle starts to idle real high seems like accelarator cable is sticking


Hi Clucas, If you're talking about a cold engine, the vehicle is fitted with an automatic 'up idle' system. Depending on how cold the ambient temperature is. The colder it is outside the higher the idle, until the engine reaches normal operating temp. The engine should then settle down to the correct idle speed. If however the cold start raises the speed to more than 1350, have a scan carried out. If the idle speed is always at a high rpm, do the same.A leakage of air into the intake manifold can also cause the latter problem. A leakage however will not be evident via a scan. Regards Johngee10

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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.

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I've never seen a samurai without a PCV valve hooked up. You sure its just missing it cuase that is what releases the pressure build up in the engine. If not working/installed then you're gonna get piston blow by, oil burning, and a rough running engine.

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This Vehicle needs an Idle air control/Idle speed motor. Good Luck

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