Question about 2003 Volkswagen Jetta TDI
Coolant temp sensor fault has nothing to do with loss of power, probably car was better because of othe jobs done. No no power on hill, no kick in from turbo. This suggest either a turbo compressor problem, a general car compression problem (head gasket starting to go?, problem on cylinders?), or a EC unit in need of replacement.
Posted on Aug 03, 2008
Initially based on your description, it may be the turbo not kicking in. The simplest/easiest check is to use an accurate boost gauge, length of hose and hose connectors. Specific steps/procedures are detailed here.
Other than that, perhaps an OBD style diagnostic scan might pinpoint probable faultsand/or a major tune up might improve things a bit. You may want tostart with the O2 sensors and/or the EGR valve (cleaning/replacing).
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards. Thank you for using FixYa.
Posted on Aug 02, 2008
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Posted on Jan 02, 2017
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