20 Most Recent 2003 Ford Focus - Page 4 Questions & Answers

Among things are a stuck thermostat. Oil problem can point to mixing oil and water from head gasket problem. The oil should be a separate system.

Resonator is usually half way under the car,is that missing?

Replace the O2 sensor.

What's this ? gaugesax out P0123 - Throttle Position (TP) Circuit High Input The TP sensor circuit is monitored by the PCM for a high TP rotation angle (or voltage) input through the comprehensive component monitor (CCM). If during key ON engine OFF or key ON engine running the TP rotation angle (or voltage) changes above maximum calibrated limit, the test fails.

• TP sensor not seated properly
• TP circuit short to PWR
• TP circuit short to ETCREF
• SIG RTN circuit open to TP sensor
• Damaged TP sensor
• Damaged PCM

A TP PID (TP V PID) reading greater than 93% (4.65 volts) in key ON engine OFF, continuous memory or key ON engine running indicates a hard fault. P0123 - ETC Throttle Position (TP1) sensor Circuit High Input The ETC TP sensor 1 was flagged as fault status by the PCM indicating high voltage.

• ETC TP1 sensor harness shorted to VREF
• ETC TP1 sensor harness shorted to PWR
• Damaged TP1 sensor
• VREF circuit shorted to TP1 sensor

Drive vehicle, bring to a stop, turn key OFF. Start vehicle, run key ON engine running self-test at idle. Access KOER diagnostic trouble codes on scan tool. P0193 - Fuel Rail Pressure Sensor Circuit High Input (FRP) The comprehensive component monitor (CCM) monitors the FRP sensor circuit to the PCM for high voltage. If voltage were to fall below a calibrated limit and a calibrated amount of time during testing, the test will fail.

• FRP signal shorted to VREF or VPWR.
• FRP signal open (gasoline only)
• Low fuel pressure (NG only)
• Damaged FRP sensor.
• Damaged PCM.
• High fuel pressure (caused by damaged fuel pressure regulator) NG.

A FRP PID value during KOER or KOEO less than 0.3 volts for gasoline or 0.5 volts for natural gas vehicles (NG) would indicate a hard fault. P0340 - Camshaft Position (CMP) Sensor Circuit Malfunction (Bank 1) The test fails when the PCM can no longer detect the signal from the CMP sensor on Bank 1.

• CMP circuit open
• CMP circuit short to GND
• CMP circuit short to PWR
• SIG RTN open (VR sensor)
• CMP GND open (Hall effect sensor)
• CMP misinstalled (Hall effect sensor)
• Damaged CMP sensor shielding
• Damaged CMP sensor
• Damaged PCM

Harness routing, harness alterations, improper shielding, or electrical interference from other improperly functioning systems may have intermittent impact on the CMP signal. P0705 TR Sensor TR Circuit Failure TR circuits, indicating an invalid pattern in TR_D. Condition caused by a short to ground or an open in P/N, D, R, 2 or 1 circuits. Open in the taillamp ground circuit. This DTC can be set by an incorrectly adjusted TR sensor. Increase in control pressure (harsh shifts). Defaults to D for an invalid position. MIL on. Inspect the taillamp ground circuit. Go To Pinpoint Test C .

It sounds like you definitely have a vacuum leak. Trace your vacuum lines coming out of the intake manifold. There should be a diagram under the hood, on the shroud or on the underside of the hood. If not Google search the vacuum routing for your vehicle. Its possible that you have a line that has been rubbing against something causing a hole, a line could have broken because the heat dries them out and they crack, (plastic lines) or a vacuum line could have just popped out of its grommet. Hope this helps.

Take it to a mechanic to be diagnosed.

Jack up rear wheels spin each one to check noise , if one is noisy check the brake shoes for a broken spring or other damage.

first time it is 60 psi second time 70 psi and finally third time 80 psi should be ok

It must be removed.

Knowing make model and year would help. Most newer vehicles, 2000 and newer, will adjust the idle control up to compensate for the compressor engaging. Possible there is an issue in the idle air control valve or electrical circuit.