Author Topic: 1999.5 Golf ALH TDI - idles but that's it  (Read 5757 times)

July 10, 2020, 08:32:09 pm

SR Heer

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1999.5 Golf ALH TDI - idles but that's it
« on: July 10, 2020, 08:32:09 pm »
I have a 1999.5 Golf TDI which has sat for quite a few years due to a very slight head gasket leak of compression into cooling system - after I drove it home from San Antonio to Houston some 200 miles I notice a bit of coolant coming out of the overflow on way home and when I asked the PO about it and he said - Oh that's the head gasket we put on - it just needs another one - i am thinking OK now wouldn't that have been nice to know before I purchased it - but I don't call people out I just take it as my responsibility to deal with it since I was the one who bought it - my eyes were bigger than my stomach - lol - ok now for the short story - it is hard to start and when it does it just idles - no above idle speeds throwing three codes  17970 - 16485 - 17656                                                                                 
17970 - Quantity Adjuster ( N146) Upper Limit Reached                   
                              (intermittent)                                                      16485 - Mass Air Flow Sensor (G70) Implausible Signal                                       17656 - Injection Start Regulation Control Deviation                                           
                             (intermittent)                                                                                             I am wondering since it sat and the non beyond idle RPM happened after it sat - maybe something got gummed up in the injection pump? When I have replaced top injection pump O ring gasket I have noticed a variable type sensor - I think it has to do with IQ settings - would that or something else in the upper two top sections of IP that relates to foot feed input need cleaning?


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