Rosie Posted August 29, 2011 Report Posted August 29, 2011 Hi All I have a 1999 110 tdi Gal.She (rosie) normally idles at about 800rpm,but today she has changed ( I know its a womans perogative ).She starts at 800rpm for about 10 secs then increases to 1100rpm for no apparent reason.This stays the same until ignition switched off then same process again. Any ideas why ? Many thanks :rolleyes: Quote
chrispb123456 Posted August 29, 2011 Report Posted August 29, 2011 Scan with Vagcom first if possible, but if not try a new temperature sensor. Quote
Rosie Posted September 4, 2011 Author Report Posted September 4, 2011 Hi Sorted the problem.Defective Alternator.The Alt was producing the incorrect charge which resulted in ECU not recieving the right readings from the sensors,which led the ECU to believe the engine was always running cold ,hence put more fuel into the system,hence higher revs.New Alt fitted and car now back to normal Quote
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