The radiator fans seems to kick on and off just fine (when parked with AC on they cycle on and off periodically). Engine coolant temp as measure via the OBD app is never above 195 even when working hard, inverter coolant temp reads 20-23 (not sure of the units?). The coolant levels in both the engine reservoir and inverter reservoir are at or just above the L level. We've never had the red triangle or check engine light when this happens and it drives normally - only the coolant light on and then off again after a few minutes. My wife said she heard gurgling sounds near the inverter coolant, but the engine coolant temp looked fine when measured via the iPhone app and I don't see any obvious signs of overheating or leaking fluids. ![]() Try a bleed again, make sure that the heat is on max 91deg, fan is on low, and center vent shows 3 red dots. Now three months later, the light comes on again and then goes off on a short drive coming up the hill. When the heater core opens for the heat, it draws in the coolant, most likely triggering the coolant light. My truck was experiencing the 'coolant blown out of the overflow pipe all over the place' symptom, and thats what it was. No problems for the next few months, including a 400 mile road trip during which I monitored coolant temp with a bluetooth OBD scanner and iPhone app, and everything looked fine (coolant never passed 195F). You may also want to do an engine block test to see if there are any gases getting into the coolant (blown head gasket). So I returned to the mechanic, they replaced the radiator cap, pressure tested the cooling system and said it all looked fine to them. After a couple weeks, the light came on again and I noticed the level was back to L and there was some coolant that looked like it squirted out the top of the overflow reservoir. A couple months later, same thing happened, and I noted the engine coolant was a tad below the L level in the reservoir, so I topped off with fresh coolant all the way up to H. ![]() Light came on and off during the trip, but always went off when the brakes were applied. First intersection proved the ABS was working, so I headed home about 90 miles away. Was -18C and had been parked on an incline all afternoon (nose up). It's already been to the mechanic twice: the first time they said everything looked fine, but I asked them to replace the engine and inverter coolant since we were at 94k miles and the interval for those was 100k. Just had the brake light come on intermittently last night. Ok, we have a coolant light that comes on briefly every few months, always when driving up a steep hill (which we do a lot since we live on one).
0 Comments
Leave a Reply. |