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The Care Shop Tips, Fixes & Solutions Below are actual automotive related problems and the how we've arrived at and provided solutions. YEAR: 1990MAKE:Chevrolet CorvettePROBLEM: Additional time to further diagnose the ignition electrical system. SOLUTION: Further testing found the #3 injector shorted out causing the computer to shut down, therefore stopping the computer injector drivers from operating the injectors, and it appears that this condition also shut down the ignition system. With the #3 injector disconnected we were able to start the car, thus freeing up the computer drivers to then enable the other injectors to function. Additionally found burnt wires near the left catalytic converter. It appears that the converter(s) have been overheated, probably due to the shorted/shorting injectors and a rich or lean condition. Further testing found 4 other injectors shorted, not as bad but close. Recommend replacing all of the injectors, repairing the burnt wiring, and possibly the catalytic converters as well. YEAR: 2003MAKE:Toyota CamryPROBLEM: Check for ticking noise (possible valve noise). SOLUTION: Found that more than likely the intake manifolds internal baffle has come loose. Recommend replacing the intake manifold per TSB TSB-0034-08-REV1. Replacing the intake manifold solved the ticking noise problem. An inner intake runner had come loose. YEAR: 2002MAKE:Toyota Camry SolaraPROBLEM: Check for rattling noise in the right rear area of the car. SOLUTION: Found the right rear upper strut mount broken where the strut shaft fits through and is fastened. This condition has allowed the walking of this shaft in the mount thus causing damage to the strut shaft as well. Recommend replacing both rear struts and then retesting. The struts fixed the problem - the right rear strut mount was broken. YEAR: 2005MAKE:Mercedes Benz CLK500PROBLEM: Additional Time To Diagnose A/C Heating System SOLUTION: Found the actuator that we could get lacking power and control signal(s). Removed the components in the console area to test outputs at the rear of the controller. Found the communication bus line for the actuator(s) "un-plugged". Reconnected the bus line and tested the actuator, okay. Ran both the actuators normalization and sync procedures and retested for proper vent and mode door operation, okay. However one of the mode door is still failing to operate. Further testing and inspection found the Left Footwell Flap Actuator getting a signal but NOT functioning. Recommend replacing the left footwell actuator soon. As for the rest of the actuators they appear to be functioning okay at this time. Given what we found as the cause of the problem it appears that the bus connector either had been un-plugged at one time and not reconnected or bumped and disconnected when someone was working in this area. Tested the heater and A/C after the repairs and everything appears to be working okay, however given that there was a code B1205 Refrigerant Pressure Too Low, there is the likelihood that the Freon system may be low and may need recharging. YEAR: 2003MAKE:Mercedes Benz CLK500PROBLEM: Check A/C Heater Blower (not flowing air). SOLUTION: Found 17 body codes related to the A/C heater system. Codes B1388, B1790, B1398, B13A0, B13A8, B15AB, B13B0, B13B8, B13C0, B13C8, B13D0, B1300, B1100, B1450, B1210, and B1205 all having to do with mode door actuators and the control unit. Recommend further inspection and testing including disassembly to gain access to both an actuator and the module. YEAR: 1990MAKE:Chevrolet CorvettePROBLEM: R&R EGR Tube to inspect for blockage and test back pressure. SOLUTION: Found no blockage. Did find however that exhaust back pressure is only measuring 0-.5 psi. Through research we found that this is not enough, this EGR system needs 1-1.25 psi to operate properly. Recommend replacing the mufflers and then retesting. Replacing the mufflers did not solve the EGR problem. On this car the exhaust is going to have be be modified to add back pressure so the EGR will function properly. YEAR: 2005MAKE:Chevrolet ColoradoPROBLEM: Level 1 Diagnostics - Includes: Initial Scan Tool Hook-Up to Retrieve Computer Related Codes SOLUTION: Found codes P0128 Engine Coolant Temp (ECT) Below Threshold, and P0171 Fuel Trim Lean System Bank 1. Further testing found an air leak at the rear of the intake air chamber. Reinstalled the hose on the air chamber and then retest fuel trims, okay. Recommend replacing the thermostat to take care of P0128. |
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