FIXES OF THE WEEK

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Posted Fix Information

ASIAN FIX
Posted By: Can-Brit Auto, Identifix User
Problem Description:
The check engine light comes on and has set trouble code P1780 for the Park/Neutral (P/N) switch. This condition is very...
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Posted Date:
03/17/2015
Confirmed Fix:
Repaired Park Neutral Position (PNP) Switch Wiring
Problem Description:
The check engine light comes on and has set trouble code P1780 for the Park/Neutral (P/N) switch. This condition is very intermittent and attempts to duplicate the condition were futile.
The P/N switch had been replaced previously but did not correct the condition. Checked the P/N switch adjustment and it is correct.
Visually inspected the wiring and connections and tested pin fit on all connectors and no problems were found.
Monitored Transmission Data to verify that the correct condition is observed for the shifter position; Park/Neutral, Reverse, Drive, 2nd. , and 1st gear. After several hours of testing we were able to briefly duplicate the condition and determined that the 1st. parameter and drive parameter were being set to true at the same time. Monitored voltage on the instrument cluster 1st. gear indicator circuit at Jumper J7/J8 (above the glove box) in case a diode was back feeding voltage to the PCM. To do this, pull the Light Green wire out of the J7 connector to isolate the circuit. It was determined that the Light Green wire from the P/N switch to Jumper J7 was shoring to voltage intermittently.
Running a new wire from the P/N switch to J7 repaired the condition.
Vehicle Description:
2001 Toyota RAV4 Base 2.0L
Category:
Engine Performance
   Check Engine Light (MIL)
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EUROPEAN FIX
Posted By: Rinaldi & Sons, Dominick Rinaldi
Problem Description:
This vehicle came to the shop with a complaint of a loud knocking sound from the engine. The local dealership where the vehicle...
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Posted Date:
04/09/2015
Confirmed Fix:
Replaced Accessory Drive Belt
Problem Description:
This vehicle came to the shop with a complaint of a loud knocking sound from the engine. The local dealership where the vehicle had been serviced stated that the engine had internal damage and required a rebuild or replacement. During our inspection of the engine the noise was confirmed but oddly the noise was only at idle or just slightly above. The more the RPM’s were raised, the quieter the noise became. We removed the valve cover to visually check the timing chain and gears because the noise was definitely coming from that area and up top, not from the bottom of the engine. The timing chain and components were not the cause of the noise because visually everything was in great condition. We then let it run while in the air on the lift and reached up and touched the housing of the pulley that drives off the back side of the serpentine belt on the crankshaft pulley and you could feel the knock noise as much as you could hear it. Removed the inner fender panel to access the serpentine belt and found that routine maintenance on the belt had been neglected as the condition of the belt was the worst seen. It had a large 1 inch long chunk missing from it on the grooved side. Replacing the serpentine belt took care of the noise.
Vehicle Description:
2010 Mini Cooper Base 1.6L
Category:
~
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GM FIX
Posted By: Total Motors, Scott Taylor
Problem Description:
This vehicle came to the shop with a complaint of a severe engine oil leak. The engine was shampooed and cleaned and the vehicle...
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Posted Date:
02/06/2015
Confirmed Fix:
Repaired Crankshaft Main Bearing Cap Bolt
Problem Description:
This vehicle came to the shop with a complaint of a severe engine oil leak. The engine was shampooed and cleaned and the vehicle taken on a test drive. Oil was found to be leaking out of the front left hand main cap cross bolt that goes through the oil pan. The bolt was very loose. Removed the bolt, resealed it and tightened it down. Test drove the vehicle and visually checked again and the leak has stopped.
Vehicle Description:
2002 Chevrolet Impala Base 3.4L Vin E
Category:
Engine Mechanical
   Other Engine Mechanical Problems
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CHRYSLER FIX
Posted By: Columbia Auto Service, Jim Voigt
Problem Description:
The air bag light is on and there is no communication with the Occupant Classification Module (OCM) code. Unable to communicate...
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Posted Date:
02/06/2015
Confirmed Fix:
Repaired Splice S373
Problem Description:
The air bag light is on and there is no communication with the Occupant Classification Module (OCM) code. Unable to communicate with the OCM with a scan tool. Test voltage on pin 9 Pink/Orange (PK/OR) wire is 6 volts Key On/Engine Off (KOEO). The circuit sends power from the Front Control Module (FCM) to Occupant Restraint System (ORC) and OCM. B+ from the FCM. Removed the driver’s seat and located splice S373. Wiggle tested the splice and voltage went from 6 to B+. Found corrosion in the splice. Cut out the bad section and rewired the splice. No further problems found.
Vehicle Description:
2006 Dodge Grand Caravan Base 3.3L Vin R
Category:
~
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FORD FIX
Posted By: Auto Credit Lot 1, William Funk
Problem Description:
There is no heat coming from the heaters. The blend doors seem to be working normally. Checked the heater core for clogging and...
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Posted Date:
01/16/2015
Confirmed Fix:
Replaced Heater Hose Restricter
Problem Description:
There is no heat coming from the heaters. The blend doors seem to be working normally. Checked the heater core for clogging and also flushed it but that did not help. Checked the coolant flow from the engine to the heater hose and output from the engine was good but unable to get any flow to the heater core through the hose. The supply hose has a restrictor in it. The hose was cut open and it was found that the restrictor had melted and was blocking the flow of coolant to the heater core. Installed a new hose from Ford and the problem has been repaired.
Vehicle Description:
2004 Ford F-150 XLT 5.4L Vin 5
Category:
Heating, Ventilation, and Air Conditioning
   Temperature Control
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