One 2003 modelpublicJettaGIX carcoolingThe indication of liquid temperature gauge is too high,StarterSometimes the speed is low.
Check:engineAfter starting for 1 min,coolingThe liquid temperature gauge indicates 100 ℃, but the actual coolant temperature cannot rise to such a high level in a short time. Turn on the headlamp orair conditionerThe coolant temperature is up to 130 ℃. Read the data stream with the diagnostic apparatus, and the coolant temperature is 97 ℃.Measuring hairelectric machineryThe voltage between B+terminal and body is 136V, measurementBatteryThe voltage between the two poles is 12.5 V.
Analysis: description of measurement resultsBatteryThe contact resistance of the negative cable clamp or the grounding wire is too large, and the battery is under charged, which leads to the unstable coolant temperature signal.
Troubleshooting: It is found that there is paint on the grounding point between the negative pole of the battery and the transmission. Remove the grounding wire, polish the paint clean, and troubleshoot.
Brand Specialty: (Keyword:The indication of Jetta coolant temperature gauge is too high. Sometimes the speed of the starter is too low. Maintenance cases: coolant, Jetta, too high)
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