Question about Chevrolet Cruze
There is not much information to go on. You didn't say what your vehicle is, what engine it has. Judging by what you wrote, the dealer got a fault code for the glow plug, but didn't change the plug. Instead, they want to put in a new wiring harness, even thoughthey got continuity. I think you need to take your vehicle someplace else and have a qualified mechanic look at it. At least, put in new glow plugs to see if that helps.
Posted on Jan 01, 2011
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Posted on Jan 02, 2017
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Dec 04, 2015 | Cars & Trucks
Clear the DTCs.
Ensure that the scan tool data is within normal operating range. Refer to Scan Tool Data List .
Verify the customer's complaint.
Perform the Visual and Physical Check in this section.
Locate the correct symptom in the list at the end of this section. Follow the procedures in the appropriate diagnostic table. If the condition can not be duplicated, or is determined to be intermittent, refer to Intermittent Conditions .
Notice: Use the connector test adapter kit J 35616-A for any test that requires probing the following items:
The PCM harness connectors
The electrical center fuse/relay cavities
The component terminals
The component harness connector
Using this kit will prevent damage caused by the improper probing of connector terminals.
Several of the symptom procedures call for a careful inspection. This can lead to correcting a condition without further tests and can save valuable time. This inspection should include the following areas:
Inspect the PCM grounds for being clean, tight, and in their proper location. Refer to Master Electrical Component List and Power and Grounding Connector End Views in Wiring Systems.
Inspect the vacuum hoses for splits, kinks, and proper connections, as shown on Vehicle Emission Control Information label. Inspect thoroughly for any type of leak or restriction. Refer to Emission Hose Routing Diagram .
Inspect the air intake ducts for being collapsed, damaged areas, looseness, improper installation, or leaking, especially between the mass air flow (MAF) sensor and the throttle body.
Inspect for air leaks at throttle body mounting area, MAF sensor and intake manifold sealing surfaces.
Inspect the wiring harness for poor connections, pinches, cuts, or other damage.
Inspect for loose, damaged, or missing sensors/components.
Use the following tables when diagnosing a symptom complaint
Lack of Power, Sluggishness, or Sponginess
Hesitation, Sag, Stumble
Cuts Out, Misses
Poor Fuel Economy
Poor Fuel Fill Quality
Rough, Unstable, or Incorrect Idle and Stalling
Engine Cranks but Does Not Run
Malfunction Indicator Lamp (MIL) Inoperative
Malfunction Indicator Lamp (MIL) Always On
I would not think the cruse control , is the light on when it does it ?
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Aug 06, 2013 | 1994 Jeep Grand Cherokee
The engine coolant temperature (ECT) sensor is a variable resistor, that measures the temperature of the engine coolant. The powertrain control module (PCM) supplies 5 volts to the ECT signal circuit and a ground for the ECT low reference circuit. When the ECT is cold, the sensor resistance is high. When the ECT increases, the sensor resistance lowers. With high sensor resistance, the PCM detects a high voltage on the ECT signal circuit. With lower sensor resistance, the PCM detects a lower voltage on the ECT signal circuit. If the PCM detects an excessively low ECT signal voltage, which is a high temperature indication, DTC P1114 sets.
Conditions for Running the DTC
Nov 04, 2012 | Cars & Trucks
The PCM has the ability to monitor this process by using a rear Heated Oxygen Sensor (HO2S 2). The rear HO2S 2, located in the exhaust stream past the catalytic converter, produces an output signal relative to the oxygen storage capacity of the catalytic converter. The PCM then calculates the ability of the catalytic converter to convert the exhaust emissions effectively. Whenever the catalytic converter is functioning properly, the rear HO2S 2 signal will be far less active than the signal produced by the front Oxygen Sensor 1 (O2S 1).
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the MIL/DTC
Whenever the oxygen sensor pigtail wiring, connector or terminal are damaged, the entire oxygen sensor assembly must be replaced. Do not attempt to repair the wiring, connector or terminals. In order for the sensor to function properly, the O2S must have a clean air reference. This clean air reference is obtained by way of the oxygen sensor wires. Any attempt to repair the wires, connectors or terminals could result in the obstruction of the air reference and degrade the performance of the oxygen sensor. Check for the following conditions:
Number(s) below refer to the step number(s) on the Diagnostic Table.
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