Car Repair World

FORD TPS SENSOR REPLACEMENT PART 2 TPS TEST 1:  Testing the 5 Volt Reference Signal 1 /  2 Previous image Enlarge Next image The very first test we'll do, is to make sure that the throttle position sensor (TPS) is getting power. As you already know, this power is in the form of 5 Volts DC and is provided by the PCM. This test (as all of the tests in this article) must be done with a multimeter, either digital or analog. Also, I recommend that the engine be at its operating temperature... since the heat accumulated by the TPS from the engine may help to find a stubborn glitch in the sensor. These are the steps: Remove any plastic covers that may be hiding the TPS from view and access. Put your multimeter in Volts DC mode (don't have a digital multimeter? Need to buy one? Click here to see my recommendations:  Buying a Digital Multimeter for Automotive Diagnostic Testing ). With the RED multimeter lead, and an appropriate tool, probe the...

Battery Test Testing Car Battery Helpful Information A common problem with a car battery is low voltage. As a battery ages it loses the ability to store electricity resulting in an insufficient flow of electrical energy to the starter. Most starters are designed to operate on a high amperage 12 volt system. When a starter is subjected to low voltage or amperage (flow) it will cause the starter to engage and disengage rapidly producing the machine gun like sound. To fix this problem a battery inspection or replacement is needed. There are two main causes a battery will not perform as it should, either the alternator has failed allowing the battery's state of charge to become weak, or the battery has failed internally and replacement is required. To  check the alternator  the engine must be running, the battery must be charged or  jump started  to check the charging system. If the alternator output test is okay, the  battery  is bad and must be repl...