how to change a thermostat in a 2003 jeep liberty
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Filed Under (Ford) by admin on 11-05-2010
Some 1999-2004 Navigator, 2002-2003 Blackwood, 2003-2005 Aviator, 2003-2004 Marauder and 2003-2004 Mustang vehicles built before 12/19/2004 equipped with 4.6L 4V/5.4 4V engine may exhibit a runs rough, lacks power, and engine misfire, prompted by a MIL light and DTC codes P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, and P0316. ACTION Diagnose engine for engine misfire concern. If diagnostics determine an engine misfire which is characterized by leakage through exhaust valve(s), only replace the affected cylinder head(s). SERVICE PROCEDURE
Filed Under (Chevrolet) by admin on 18-01-2011
Tests/Procedures: Potential Causes: Tech Tips: Diagnostic Codes: 1. Replace the thermostat and test drive to see if the code returns. Thermostat This code indicates the engine has not reached a set temperature based on engine run time. P0128 Reported Fix Details 2003 Chevrolet Trailblazer, 4.2L * Replaced Engine Thermostat – We replaced thermostat (with housing) and refilled system with fresh coolant. Cleared code and test drove. now vehicle comes up to operating temp as it should. 2003 Chevrolet Trailblazer, 4.2L * Thermostat – Replaced the t-stat and alol is fine. Did notice that ect at cruise warm is around 210F . Seems high , will watch on other vehicles. 2005 Chevrolet Trailblazer, LS 4.2L * Replaced Engine Thermostat – replaced thermostat NOTE: it is on the side of the engine at the lower radiator hose 2005 Buick Rainier, 4.2L, Vin S, Eng Cfg L6, USA/Canada * Thermostat – DTC P0128, Engine not reaching operating temperature, Replaced thermostat, retest OK Confirmed Fix Engine Thermostat Engine Thermostat Engine Thermostat Engine Thermostat
Filed Under (Jeep) by admin on 28-12-2010
Transmission Delayed Engagement OVERVIEW This bulletin involves replacing the front pump assembly in the transmission and checking the Transmission Control Module (TCM) for the latest software revision level. MODELS MODELS Year 2004 2002 – 2004 2003 2003 2002 2004 2002 2003 2002 2003 2002 2003 2002 2003 2003 Model Code (CS) (JR) (KJ) (KJ) (LH) (PL) (PT) (RG) (RS) (TJ) Model Pacifica Sebring Convertible/Sebring Sedan/Stratus Sedan Liberty Cherokee (International Markets) 300M/Concorde/Intrepid Neon PT Cruiser Chrysler Voyager (International Markets) Town & Country/Caravan/Voyager Wrangler SYMPTOM/CONDITION Vehicle operator may experience a delayed or temporary loss of transmission engagement after initial start up. The condition follows an extended soak (several hours) and may be accompanied by a harsh 4-3 downshift. Technician may find Diagnostic Trouble Code (DTC) P1791/P0944 – Loss of Prime. DIAGNOSIS Using a Scan Tool (DRBIII(R)) with the appropriate Diagnostic Procedures, verify all engine systems are functioning as designed. If DTCs are present, other than those listed above, record them on the repair order and repair as necessary before proceeding further with this bulletin. If the vehicle operator describes the Symptom/Condition or the technician finds DTC P1791 or P0944, perform the Repair Procedure.
Filed Under (Chevrolet) by admin on 10-06-2010
Tests/Procedures: 1. Replace the thermostat and test drive to see if the code returns. Potential Causes: Thermostat Tech Tips: This code indicates the engine has not reached a set temperature based on engine run time. Diagnostic Codes: P0128 43 – Engine Thermostat 3 – Engine Thermostat, Thermostat Housing 2 – Thermostat Housing 1 – Engine Coolant, Engine Thermostat 1 – Engine Coolant 1 – Engine Coolant Temperature (ECT) Sensor, Engine Thermostat
Filed Under (Chevrolet) by admin on 21-04-2011
This PI was superseded to advise dealers there is no repair for early oil change messages or erratic OlM operation. Please discard PIP4540B. The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Condition I Concern: A dealer may encounter a customer concern of the oil life monitor (OlM) percentage dropping too qUickly, or an early oil change message. A customer utilizing the oil life monitor may be directed to change the oil at (or near) 1000 mile intervals. Recommendation Ilnstructions: Please do not replace the IPC or ECM for an early oil change message. Oil life monitoring is dependent on vehicle use. Oil life monitoring and change intervals will differ depending on how the vehicle is driven. Please complete the current SI diagnostics for any trouble code or symptom found. Engine drivability concerns may induce early oil change messages or erratic OlM operation. Dealers should verify there are no intake or exhaust leaks by completing Charge Air Cooler Diagnosis (Full System Air leak Test and the Induction System Smoke Test). Discuss driving habits with the customer. The main contributor to early or erratic oil change messages may be some of the customers driving habits. Drive cycles that include short trip, stop and go, and extended idle times are a few of the contributors to early oil change messages. Customers with more exhaust regenerations (due to driving habits) are more susceptible to qUicker oil change messages. There is no repair for early oil change messages or erratic OlM operation. If a dealer is to encounter a vehicle with a customer concern of early oil change complete a Field Product Report using the newest version of bulletin 02-00-89-002. Note: If an oil analysis has been completed fuel dilution should not be over 12%.