Difference between revisions of "17663/P1255"

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* Difficulties with starting a cold engine.
 
* Difficulties with starting a cold engine.
 +
** ''Diesel: an indication is extreme long time burning time of the glow indication light.''
 
* Starting the engine when engine is warmish or warm, idle rpm immediately is 1200 - 3000 rpm.
 
* Starting the engine when engine is warmish or warm, idle rpm immediately is 1200 - 3000 rpm.
 
* RPM at idle is irregular.
 
* RPM at idle is irregular.
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* With engine warm (90 °C) the engine temperature suddenly drops (70 °C) and slowly comes back to 90 °C.
 
* With engine warm (90 °C) the engine temperature suddenly drops (70 °C) and slowly comes back to 90 °C.
 
* Bad acceleration during warming up.
 
* Bad acceleration during warming up.
** ''Diesel: an indication is extreme long time burning time of the glow indication light.''
 
  
 
==== Possible Causes ====
 
==== Possible Causes ====

Latest revision as of 01:36, 22 March 2008

17663/P1255 - Engine Coolant Temperature Circuit (G62): Short to Ground

Possible Symptoms

  • Difficulties with starting a cold engine.
    • Diesel: an indication is extreme long time burning time of the glow indication light.
  • Starting the engine when engine is warmish or warm, idle rpm immediately is 1200 - 3000 rpm.
  • RPM at idle is irregular.
  • With all engine temperatures seldom idle rpm will vary between 900 - 1000 rpm.
  • With engine warm (90 °C) the engine temperature suddenly drops (70 °C) and slowly comes back to 90 °C.
  • Bad acceleration during warming up.

Possible Causes

  • Wiring and/or connections faulty
  • Engine Coolant Temperature Sensor (G62) faulty

Possible Solutions

  • Check wiring and connections
  • Check / Replace Engine Coolant Temperature Sensor (G62)

Special Notes

  • In MY 1995-2002 (?) in Europe at VW-cars the G2/G62 had the bad reputation of breaking down often. The default G2/G62 is black and all replacements are green.