schematics and diagrams

Tuesday, February 28, 2012

Where is the throttle position sensor located on the 1999 Cadillac DeVille?

The throttle position sensor is serviced as part of the throttle body.
See the image below :----

To replace the TP sensor,follow the procedure as follows :---

Install the throttle body assembly with the TP sensor. Ensure that the O-rings are properly positioned. The O-rings should seal to the intake plenum.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Install the mounting bolts.

Tighten
Tighten the mounting bolts to 22 N·m (16 lb ft).
Install the vacuum hose, the air inlet hose, and the coolant hoses.
Connect the TP sensor electrical connector.
Perform the idle learn procedure by turning the key ON for 30 seconds while leaving the engine OFF to resume the normal idle.
Check the engine coolant level. Refill the coolant if the reading is low.

This details will help.

Thanks.

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Monday, February 27, 2012

Maf sensor diagram for a 2003 ford explorer?

On this 2003 Ford explorer vehicle the IAT , intake air temp sensor ,,has been made into the MAF, the mass air flow sensor.

And its is the component right after the air filter.

See the diagram shown below :----

The MAF /IAT assembly is number 6 in the pic above:--

The two wires for the IAT , located inside the MAF are the GRAY wire and the GRAY/RED wire.

This will help.

Thanks.

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Hyundai Sonata cooling fan not working

Turn on our car and let it idle if you see your fan runs. Watch the temp guage, if it goes more than half and your fan does not kick in, tun on the ac and then notice if the temp goes down. If yes, your fan switch is bad.
While trying this procedure Cover your grille first with a towel or small rug to restrict air flow.

But if fans are not running then fuse and relay controlling the cooling fans are to be replaced aone by one and checked.

see below the diagram for cooling fan relay and fuse location.
Its fusible link too.

here are the schematics:

This details will help.

Thanks.

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Fuel pump not running?

This problem is noticed on Ford expedition.
Its a 2000 year model ford.

In this case the fuel pump has no power and its not running.

On that basis the troubleshooting is as follows :-----

First check the fuel pump relay,then inertia switch and the fuel pump wiring.

The location diagram of fuel pump relay is as follows :-----

Try to jump fuel pump directly.

To do this try this :---

Test the pink wire at the plug where it connects pump.Now run 12 volt power in to pump side of that wire and see if the pump starts and runs.
If the pump runs then wiring is the issue and pump is ok.But if its not running then pump is issue.

Also try one more procedure for confirming the problem :----

Do a quick test, make sure the truck is back to normal, all connector and stuff plugged in. On the fuel rail on the engine you shoud see a small valve that looks like the valve on a tire. It may have a cap on it. Now try starting the truck 4 times. When its done take a screw driver and push in on the valve. Keep your face away. If your pump is working then you should get a burst of fuel. If nothing comes out then something is wrong there and we can hunt it down.

If it works then inertia switch and relay needs to be checked to confirm the issue.
Try this test as follows :----

First thing we need to do is divide the circuit and see where we are losing power. The inertia switch is right in the middle of this circuit. So first thing i want you to do is disconnect the inertia switch and test for power on the green wire/with yellow tracer. Now when you turn the key on the pump relay is commanded on for only three seconds, so set your test up first, then turn truck on. You should see power for 3 seconds. It should be on continuously when you crank the engine.

This tests and troubleshooting possibilities will help you to confirm the problem.

so as per that you can go for replacing and repairing the particular parts.

This will help.
Thanks.

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