schematics and diagrams: car shifts hard

Wednesday, June 6, 2012

1998 Ford Expedition: Will not Shift Out of Park?

The Shifter will not release out of park mode.Vehicle stuck up in park and not move to drive mode or go to reverse.

First the few basics needs to be inspected.

When the shifter will not release from Park, first- Check your rear brake lights and see if they are working when you step on the brake pedal.

If the brake lights are NOT working, check your fuses.
Now if the fuses are good, and still no brake lights, the problem will be the Brake Light Switch.
The switch is located at the top of the brake peal arm.
See the Exact location diagram of Brake light Switch shown below:----

This switch controls the rear brake lights, and also sends a signal to the Shift Interlock telling it to release when the brake pedal is depressed. Inspect the electrical connector for any loose, broken or damaged wires. If the visual inspection checks ok, replacing the switch will solve your problems.

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The above mentioned in one possibility.But now think other way.
If the brake lights ARE working,then in that case the problem will be in the Shift Interlock system. Very commonly, this a Shift Interlock Solenoid problem. This solenoid is located on the steering column.
First Inspect the electrical connector for any loose, broken or damaged wires. If the visual inspection checks ok, suspect a faulty solenoid.

See below the exact location diagram for faulty part:----

This details will help.
Thanks.

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Monday, December 12, 2011

Isuzu Trooper Shifts hard and Engine Revving in stop?

Inspect the throttle body and idle air control valve closely.It also sounds like carbon is sticking the throttle control open on this car.
While the engine is revving high remove the throttle cable at the throttle shaft. If the RPM does not return to an idle, remove the air intake hose [in front of the throttle plate] Check that the butterfly is all the way closed. If so then replace the TPS.
In some cases cable gets stuck up.
In throttle body area there are two lines one for the actually gas pedal and the other for the cruise control. What happens is the cable gets stuck, causing the engine to rev high, normally if you just drive around the cable goes back down.If all this checked ok and there is power brake system on your car then its Vacuum leak.
Vacuum leak sounds right. It might be inside the booster. Try plugging the line to the booster to see if it idles better. Or listen carefully under the dash for a hiss when you push on the brake.
The booster is on the firewall in front of the driver. In other words, it is to the back right of the engine compartment as you look under the hood.If all checked ok,then it can be Faulty brake booster causing the fault.

See how the brake booster looks.

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This details will help you.

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