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Go Back   TDIClub Forums > VW TDI Discussion Areas > OBD Scanners

OBD Scanners Discussions on using On Board Diagnostic (OBD) scanners/ Diagnostic Equipment related to TDIs

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Old April 7th, 2008, 11:57   #1
02 jetta
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Join Date: Feb 2008
Location: morrisville,NY (central NY)
Fuel Economy: 47 avg.
Default cold start injection value?

Is a cold start value of 35% in chanel 04 of the adaption screen when the coolant is 195 degrees farienhiet to high? Could this mean I have a faulty fuel temperature sensor?
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Old April 9th, 2008, 05:49   #2
02 jetta
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Join Date: Feb 2008
Location: morrisville,NY (central NY)
Fuel Economy: 47 avg.
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no suggestions?
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Old November 10th, 2019, 15:26   #3
peteguenther
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Join Date: Sep 2017
Location: vermont
TDI(s): 2003 Jetta
Fuel Economy: 40 in the hils 50 on the highway
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I would be interested to know too if anyone has suggestions. Should cold start drop to zero at full operating temp?
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Old November 11th, 2019, 09:57   #4
peteguenther
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Location: vermont
TDI(s): 2003 Jetta
Fuel Economy: 40 in the hils 50 on the highway
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Also I just checked with vcds and found that with the motor (ALH) fully warm showing 88C the cold start injection duty cycle reads 3percent at idle but jumps to about 30 percent driving - does that seem wrong and a cause for poor mpgs?
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