My Montana Fuel gage is acting up

4 messages, Last post on Apr 15, 2009 at 8:24 AM

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#3 of 4 2004 Pontiac Montana - Inaccurate Coolant Temp Gauge by mikeyd17 Nov 10, 2008 (12:18 pm)
Hello, I have a 2004 Pontiac Montana with about 107500 kms on it (VIN: 1GMDX03E24D183870) and the coolant temperature gauge is not working properly. Sometimes when I start my van, the temp gauge is pinned at MAX temp and stays there the whole trip...other times it's pinned at MIN temp...and other times it seems to work OK. When it's pinned at MAX temp, I check the actual temp that the on-board computer is seeing, by using my ODBII scan tool...and I get about 87 degrees C when I'm halfway into my trip (i.e. - when the van is at operating temp), which seems OK. All the other analog gauges are working perfectly. What could be causing this? Any ideas? I read a lot about the issues with "connector C305" on the Internet on the Montana vans...could this be the problem? Any help would be very much appreciated. Thanks very much in advance. mikeyd17
#4 of 4 Re: My Montana Fuel gage is acting up [macnio] by youravtech Apr 15, 2009 (8:24 am)
Replying to: macnio (Aug 09, 2008 6:50 pm) I have a 2000 Montana and had the same problem. This van is known for having a bad fuel sending unit.