

| Subject: | Cooling system questions for 1.9L |
| From: | Howard Allen |
| Date: | Tue, 13 Sep 2005 16:30:55 -0400 |
Wish I had an aircooled but since I don't I would like to get as much information about my "new" watercooled baby. Talking with a long-time 1.9L VW van owner the following opinions were expressed. Would appreciate the List's feedback. 1. The fan sensor switch is too low in the radiator to do a good job preventing overheating during low speed travel [therefore install a manual override switch]? 2. The water pump does not flow enough coolant during idling in stop and go driving [this guy installed a smaller pulley onto the waterpump shaft - is this recommended?]. 3. Radiator cooling capacity is insufficient during high ambient temps while endeavoring to climb 7% or greater grades [therefore install a larger radiator]? 4. Highway speeds of greater than 65 MPH will result in headgasket failure caused by overheating? 5. The factory temperature guage is not a reliable indicator of dangerously high coolant temperature - anything past half way actually indicates an over temp condition that should be addressed by pulling over and shutting down the engine immediately? Best Regards Howard Allen S. Portland, Maine "Don't tread on me."
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