schematics and diagrams: TPS

Showing posts with label TPS. Show all posts

Sunday, June 16, 2013

2004 Dodge Ram 1500 Idles High

Idles High

Dodge Engine jerks into gear

Q: 2004 Dodge Ram 1500 QC SLT 4.7L automatic engine with 165,000 miles. My idle continues to fluctuate. When I come to a quick stop the engine continues to idle high. While take off truck moves slow for a few feet then jerks into gear. Also, in park or drive it sometimes jerks into gear.

A: It is most likely throttle position sensor (TPS) issue.

For 2004 Dodge Ram model truck The TPS is mounted on the left side of the throttle body and tells the engine and trans controllers how far the throttle is open.

Why Such Problem Occurs:

When the sensor gets worn it will start to create small voltage spikes in it's signal and the engine controller things you are opening the throttle, so the idle can be erratic. If the voltage just stays high then so will the idle.

The trans controller also receives the TPS signal and uses it for shifting control. If the idle fluctuation and the trans symptoms started at about the same time then the TPS is likely causing the shifting issues too.

Monitoring TPS Signal:

The TPS signal can be monitored with a scan tool or lab scope. You can also try unplugging it while the idle is fluctuating, if it straightens up then replace the sensor. You can also tap on the sensor or wiggle the connector, if this has any effect on the engine then replace the sensor.

This will help.

Thanks.

Friday, December 9, 2011

Location of Freeze Plug on 1998 Ford Expedition?

A freeze plug, also known as an expansion plug, is installed in a vehicle's liquid-cooled engine block to protect against damage to the block by freezing. If the coolant is diluted excessively by water, it may expand and freeze in extremely cold conditions, causing damage to the engine block.There are plugs on both the driver's and passenger's side of the engine block and both cylinder heads [outboard side of each head]. There are also several plugs located in the rear of the block. The transmission must be removed to access these rear plugs. You should have changed your antifreeze more often!

This basic details will help.Thanks.

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If you need dis-assembly or replacement instructions for any other auto/car part, or you want to ask question related to your car/truck jeep problem then please leave the comment with your details, so I can provide you the required instructions and solutions.

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For more solved car problem,see the list mentioned below:----

Car Engine Stalls While Driving?

http://schematicsdiagram.blogspot.com/2011/12/car-engine-stalls-while-driving.html

Testing mass air flow sensor?

http://schematicsdiagram.blogspot.com/2011/12/testing-mass-air-flow-sensor.html

Where is MAF sensor located on 2000 Ford Expedition?

http://schematicsdiagram.blogspot.com/2011/12/where-is-maf-sensor-located-on-2000.html

Car won't start without hitting the gas pedal?

http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-without-hitting-gas.html

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1995 Oldsmobile Eighty Eight has bad O2 Sensor?

http://schematicsdiagram.blogspot.com/2011/12/1995-oldsmobile-eighty-eight-has-bad-o2.html

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http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html

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http://howtobyme.blogspot.com/2011/12/car-takes-time-to-crank-and-start.html

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http://schematicsdiagram.blogspot.com/2011/12/after-getting-car-washedcheck-engine.html

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http://schematicsdiagram.blogspot.com/2011/12/why-airbag-light-flashes-7-times.html

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http://schematicsdiagram.blogspot.com/2011/12/front-tires-leaning-in.html

Thursday, December 8, 2011

Testing mass air flow sensor?

Car not starting properly ,car has slow accelarations,car bogs down,low gas mileage, shuddering, stalling, knocking or pinging,low rpm,car sputtering etc etc are basically indication of bad MAF sensor.MAF is mechanic short hand for a Mass Air Flow sensor. It measures the amount of air entering the engine. It is located between the air cleaner box and the throttle body. It usually is either clamped into the rubber tube which connects these parts or bolted to the air cleaner top housing. It will have an electrical connector attached to it. To do proper testing requires a professional computer scan tool.
Two "poor man" tests can be done. First test is to tap lightly on the MAF while the engine is idling [engine must be warmed up aka at operating temperature] If the engine stumbles or the idle changes when the MAF is tapped on, it is bad. Another check is to shut the engine off [key off] and disconnect the wiring connector to the MAF. This will cause the engine computer to go into "limp home" mode. This is the computer's response to a failed major sensor. If the engine now runs better, the MAF is probably bad. FYI, the MAF can fail in a number of ways which will not give a fault code. Often, the best test is to substitute a MAF from another car [same year, make, model & engine] that is running normally.

This details will help.Thanks.

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For more car help solutions,see the solved answers list below:------------

Where is MAF sensor located on 2000 Ford Expedition?

http://schematicsdiagram.blogspot.com/2011/12/where-is-maf-sensor-located-on-2000.html

Car won't start without hitting the gas pedal?

http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-without-hitting-gas.html

Ford Keyless Remote Fob Reprogramming?

http://schematicsdiagram.blogspot.com/2011/12/ford-keyless-remote-fob-reprogramming.html

1995 Oldsmobile Eighty Eight has bad O2 Sensor?

http://schematicsdiagram.blogspot.com/2011/12/1995-oldsmobile-eighty-eight-has-bad-o2.html

Dual Exhaust on 1996 Chevrolet camaro z28?

http://schematicsdiagram.blogspot.com/2011/12/dual-exhaust-on-1996-chevrolet-camaro.html

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http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html

Car takes time to Crank and start?

http://howtobyme.blogspot.com/2011/12/car-takes-time-to-crank-and-start.html

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http://schematicsdiagram.blogspot.com/2011/12/car-jerks-while-going-uphill-and-check.html

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http://schematicsdiagram.blogspot.com/2011/12/after-getting-car-washedcheck-engine.html

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http://schematicsdiagram.blogspot.com/2011/12/fuel-gauge-jumps-from-empty-to-full.html

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http://schematicsdiagram.blogspot.com/2011/12/why-airbag-light-flashes-7-times.html

Passenger side Folding Mirror is not operating?

http://schematicsdiagram.blogspot.com/2011/12/passenger-side-folding-mirror-is-not.html

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http://howtobyme.blogspot.com/2011/12/very-low-air-output-on-chevrolet.html

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http://howtobyme.blogspot.com/2011/12/after-replacing-batteryignition-not.html

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http://howtobyme.blogspot.com/2011/12/where-is-fuse-box-located-on-2002-honda.html

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http://howtobyme.blogspot.com/2011/12/how-to-reset-radio-code-after-car.html

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http://howtobyme.blogspot.com/2011/12/car-still-runs-rough-after-tune-up.html

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http://howtobyme.blogspot.com/2011/12/car-crankshas-spark-but-will-not-start.html

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http://howtobyme.blogspot.com/2011/12/cylinder-6-misfire.html

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http://howtobyme.blogspot.com/2011/12/chevy-s-10-blazer-43l-spark-plug-firing.html

2008 Ford Ranger Shifter Knob Removal?

http://schematicsdiagram.blogspot.com/2011/12/2008-ford-ranger-shifter-knob-removal.html

Erratic idle on car?

http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

Car dies when gas pedal is pressed?

http://schematicsdiagram.blogspot.com/2011/12/car-dies-when-gas-pedal-is-pressed.html

MAF, IAT, MAP and Coolant Level Sensor problem all together on Mazda MPV?

http://schematicsdiagram.blogspot.com/2011/12/maf-iat-map-and-coolant-level-sensor.html

Car Surging?

http://schematicsdiagram.blogspot.com/2011/12/car-surging.html

How to replace a distributor on Chevrolet Camaro?

http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-distributor-on-chevrolet.html

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http://schematicsdiagram.blogspot.com/2011/12/cadillac-seville-digital-dash-display.html

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http://schematicsdiagram.blogspot.com/2011/12/can-car-radio-code-block-passkey-anti.html

Rear oil seal leaking?

http://schematicsdiagram.blogspot.com/2011/12/rear-oil-seal-leaking.html

Car water leak around the Starter area and Bell Housing?

http://schematicsdiagram.blogspot.com/2011/12/car-water-leak-around-starter-area-and.html

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http://schematicsdiagram.blogspot.com/2011/12/where-is-tps-and-iac-located-on-ford.html

Where is TPS and IAC Located on Ford Escort?

Ok.TPS means throttle Position Sensor and IAC means Idle Air Control Valve.
When you notice car jerks or bogs down or Car idle getting rough or lean.At that time,you need to inspect cars TPS and IAC part.
The THROTTLE POSITION SENSOR is a black plastic device [abbreviation is TPS] mounted on the throttle body. It is held on with 2 screws and has a 3 wire electrical harness plugged into it. The easy way to locate the throttle body [in case your brother does not know] is to follow the black rubber tube which goes from the air cleaner to the engine. the aluminum device that rubber tube connects to, is the throttle body. There is another sensor called the IAC [Idle Air Control Valve] which also is attached to the throttle body. The IAC usually has 4 wires, rather than 3, going to it. That is the easiest way to differentiate it from the TPS [Throttle Position Sensor]
The TPS can be changed by unplugging the wiring connector and removing the two mounting screws. To further complicate the issue, Ford used two styles of TPS. One style has slotted holes for the two mounting screws. The slots are designed to allow the sensor to be adjusted. The second TPS design does not have slotted mounting holes in it. It can only go on one way, and is NOT adjustable. If your car has the style with slotted holes, you will need to use a computer scanner to read the voltage of that sensor [with the key on, engine off and gas pedal [aka throttle pedal] at idle. If the voltage for the TPS is between 0.9 and 1.1 volts, everything is OK. If the voltage is not within that tolerance, you must loosen the mounting screws and move the sensor in the slotted holes, to get the proper voltage reading.

This details will help.Thanks.

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For list of solved car problem,follow the list:-----