Check connectivity at the ribbon on the cluster. Use a DMM to test it from the plug connector to the back of the cluster where it goes to the coolant gauge. Z On Tuesday, October 17, 2017, 10:55:15 AM MDT, Dan N <dn92610@GMAIL.COM> wrote: thanks Mark, will do that today weather permitting... will report back for result dan On Tue, Oct 17, 2017 at 9:45 AM, vw_van_fan_Mark <madvws@cox.net> wrote: > In the engine compartment wiring box there are 2 round 7 pin connectors. > One of those has a connection for the yellow/red wire from the temp sender > to the dash. Unplug that connection and look closely at the pins for > corrosion. > > To test, ground the pin with the yellow/red wire, on the side that comes > from the dash, not from the sender. Grounding that pin while the key is on > should make the red led blink immediately and the temp needle rise quickly. > Does it? > > Mark > > > Dan N wrote: > >> hi all, >> >> 1991 tintop Syncro coolant temp gauge not moving at all, the red light >> blinks and goes away as usual...it's like this since I bought it .. >> >> - replaced the coolant temp sensor >> - check and redo the coolant temp sensor wire connector >> - check wiring at instrument cluster, blue ribbon looks OK... >> >> I am thinking of getting this coolant gauge replacement at VC ( >> http://www.van-cafe.com/temperature-gauge) >> >> what else I have to do or to test the gauge before ordering one? (to make >> sure the one I have is bad) >> >> thanks in advance >> >> dan >> >> |
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